| 摘要 |
PROBLEM TO BE SOLVED: To insure necessary continuity without using special material for a bearing component itself by constituting a rolling bearing so that seals fixed to one bearing ring are connected with bushes fixed to the other bearing ring through discs of good electrical conductivity. SOLUTION: This rolling bearing 1 is adopted for example to the main motor of an electric car, and it receives current shown by flash of light. For conducting the current, seals 5 constituted of discs 6 of which the curved inner circumferential edges 7 are fixed in the circumferential grooves 8 formed on an inner ring 2, and bushes 9 of U-shaped section of which the cylindrical walls 10 are fixed to the inner circumferential face 11 of an outer ring 3, are provided on both sides of the rolling bearing 1. The free outer circumferential edge 12 of the disc 6 is received in a space 13 between both radial walls 14, 15 extending in the radial direction of the bush 9. A contact brush 16 contacting with the brush 9 is provided on the free outer circumferential edge 12 of the disc 6, and current can be let flow making a detour, without letting flow current passing the contact part positions between rolling bodies 4 and the guide race faces 17, 18 of the inner ring 2 or the outer ring 3. |
