JPH01171921U - - Google Patents

Description

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

第１図は本考案の一実施例を示す断面構成図、
第２図は本考案の応用例を示す要部断面図、第３
図は従来例を示す断面構成図を表す。 ７ａ，７ｂ…ベアリングレース、１４…第１の
永久磁石、１７…第２の永久磁石。 FIG. 1 is a cross-sectional configuration diagram showing an embodiment of the present invention;
Figure 2 is a sectional view of the main parts showing an application example of the present invention, Figure 3
The figure represents a cross-sectional configuration diagram showing a conventional example. 7a, 7b...bearing race, 14...first permanent magnet, 17...second permanent magnet.

Claims (1)

【実用新案登録請求の範囲】 (1) 可動部分にベアリングレースを有し、該ベ
アリングレースに回転軸を摺接状態で挿通する軸
受けにおいて、回転軸に摺動可能な２つの円環状
永久磁石で磁極面の同極を対向させて回転軸に挿
入し、一方の円環状永久磁石が可動するベアリン
グレースを押圧するように、他方の円環状永久磁
石を回転軸に固定したことを特徴とする軸受けの
振動防止機構。 (2) 前記の２つの円環状永久磁石の対向する磁
極面以外を各々磁性材料で包囲し、且つ２つの円
環状永久磁石の内周と外周を包囲する磁性材料と
の間に隙間を設け、一方の円環状永久磁石を包囲
する磁性材料が可動するベアリングレースに押圧
することを特徴とする請求項(1)に記載の軸受け
の振動防止機構。[Scope of Claim for Utility Model Registration] (1) In a bearing that has a bearing race in its movable part and in which a rotating shaft is inserted into the bearing race in sliding contact, two annular permanent magnets that are slidable on the rotating shaft are used. A bearing characterized in that the magnetic poles are inserted into the rotating shaft with the same poles facing each other, and the other annular permanent magnet is fixed to the rotating shaft so that one annular permanent magnet presses a movable bearing race. Anti-vibration mechanism. (2) Surrounding each of the two annular permanent magnets other than the opposing magnetic pole surfaces with a magnetic material, and providing a gap between the magnetic material surrounding the inner and outer peripheries of the two annular permanent magnets, 2. The bearing vibration prevention mechanism according to claim 1, wherein the magnetic material surrounding one of the annular permanent magnets presses against the movable bearing race.