CHAIR WITH TILTING MECHANISM OF SEAT PART

摘要

PROBLEM TO BE SOLVED: To simplify a mechanism structure of tilting a seat part and improve tilting function of a seat part by preventing an unstable twist in the turning direction of the seat part to a support part in a chair with the tilt mechanism of the seat part.

SOLUTION: This chair 10 with the tilt mechanism of the seat part is provided with the tilt mechanism disposed between the seat part 20 having a sitting surface 21 and a support plate 30 opposedly disposed in the lower part of the seat part 20 and tiltably supporting the seat part 20 to the support plate 30. The tilt mechanism is a universal joint 50 wherein two rotational shafts 53 and 55 forming a predetermined crossing angle between the seat part 20 and the support plate 30 are connected together via a connecting member 51, the rotational shaft 53 is pivoted to a yoke 52 rigidly joined with the seat part 20, and the rotational shaft 55 is pivoted to a yoke 54 rigidly joined with the support plate 30.

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