| 摘要 |
The invention relates to an anti-static underframe 6 for an office chair, including a metal central column 5 and a base 8 with a metal structure formed from a plurality of branches 10 in the shape of a star, bearing castors 11 made from insulating synthetic material at their free end 12, characterised in that it includes at least one member 13 in contact with the ground 7 which is mounted securely to one of the branches 10, consisting of a material which conducts electricity and connected electrically to this branch 10. The contact member 13 is mounted on the branch 10 between the castor 11 and the centre 9 of the base 8. <IMAGE>
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