JPH0210772U

JPH0210772U -

Info

Publication number: JPH0210772U
Application number: JP8724788U
Authority: JP
Priority date: 1988-06-29
Filing date: 1988-06-29
Publication date: 1990-01-23

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す断面正面図、
第２図は拡大要部断面図、第３図は第２図の拡大
断面平面図、第４図は他の実施例を示す断面正面
図、第５図は別の実施例の断面正面図、第６図は
変形例の要部断面図、第７図は要部斜視図、第８
図はさらに別の変形例の要部断面正面図、第９図
は別の実施例を示す断面正面図である。 FIG. 1 is a cross-sectional front view showing an embodiment of the present invention;
FIG. 2 is an enlarged cross-sectional view of essential parts, FIG. 3 is an enlarged cross-sectional plan view of FIG. 2, FIG. 4 is a cross-sectional front view showing another embodiment, and FIG. 5 is a cross-sectional front view of another embodiment. Fig. 6 is a sectional view of the main part of the modified example, Fig. 7 is a perspective view of the main part, and Fig. 8 is a sectional view of the main part of the modified example.
The figure is a sectional front view of a main part of yet another modification, and FIG. 9 is a sectional front view showing another embodiment.

Claims

[Claims for Utility Model Registration] 1 Bearing parts 31 and 32 in the cylindrical part 1 of the bracket 2
In a spindle motor equipped with a rotating shaft 3 that is rotatably supported via a cylindrical portion 1,
The outer circumferential surface 9 of the rotating shaft 3 and the inner circumferential surface 12 of the cylindrical portion 1
A spindle motor characterized in that it is provided with a ground connection mechanism 33 that connects the ground to the ground. 2. First and second inner diameter side rolling grooves 10 and 11 are formed at different positions in the axial direction on the outer circumferential surface 9 of the rotating shaft 3 to match the shape of the balls 8..., and a bracket facing the outer circumferential surface 9 is formed. A first outer diameter side rolling groove 13 is formed at a position corresponding to the first inner diameter side rolling groove 10 on the inner circumferential surface 12 of the cylindrical portion 1 of No. 2. An outer ring 14 having a second outer rolling groove 15 formed thereon is fitted into a position corresponding to the second inner rolling groove 11, and a part of the cylindrical portion 1 of the bracket 2 is directly connected to the bearing outer ring. Furthermore, the rotating shaft 3 is provided inside the cylindrical portion 1.
A spindle motor characterized by being provided with a grounding connection mechanism 33 for grounding the outer circumferential surface 9 of the cylindrical portion 1 and the inner circumferential surface 12 of the cylindrical portion 1.