CHAIR FRAME STRUCTURE AND METHOD FOR MAKING THE SAME

摘要

A chair frame structure and method for making the same that allows efficient assembly without dependence on welding, provides reliable strength, and allows production costs to be reduced. The chair frame structure includes a gas spring receiving base into which an end of a gas spring is inserted and abutted is joined to a seat support base of a main seat support unit. The gas spring receiving base is joined to the seat support base using blind rivets applied at a plurality of positions by the operation performed from outside. Since the gas spring receiving base is joined using blind rivets without reliance on welding, it is possible to achieve an efficient, low-cost seat structure that provides adequate strength with a simple structure.

主权项

1. A chair frame structure that is equipped with a main seat support unit to which are joined a seat and an upper end of a support column having a lower end thereof secured to chair legs, said main seat support unit being formed of a gas spring receiving base to which said upper end of said support column is joined and a seat support base to which said gas spring receiving base and said seat are joined,
wherein said seat support base and said gas spring receiving base are joined with a blind rivet.