Long-stroke leg supporter retractable mechanism and chair

Abstract

The invention relates to a long-stroke leg supporter retractable mechanism. The long-stroke leg supporter retractable mechanism comprises a base framework unit, a leg supporter framework, an operatingunit, a driving piece, a first connecting rod and a connecting rod driving mechanism; the base framework unit comprises a chair framework with a seat framework and slide rail assemblies installed onthe seat framework, wherein the slide rail assemblies are three-segment rails; the leg supporter framework is connected to the slide rail assemblies and follow the slide rail assemblies to move; the operating unit comprises a driving shaft which is arranged at the rear portion of the seat framework, and the driving shaft is rotatably installed on the seat framework; the driving piece is used for driving the driving shaft to rotate around the central axis of the driving shaft; the first connecting rod drives the connecting rod driving mechanism in responses to the rotation of the driving shaftto drive the slide rail assemblies to move from one position of the folding position and the unfolding position to another position of the folding position and the unfolding position. The foldable legsupporter mechanism is folded and unfolded with less effort, the leg supporter framework can be folded by the greatest angle, and after the mechanism is unfolded, a leg supporter can stretch out fora longer distance.

Description

technical field [0001] The invention belongs to the technical field of furniture, and in particular relates to a long-stroke footrest telescopic mechanism and a seat. Background technique [0002] Chairs are office furniture for people to sit while working and studying. Office workers will feel tired after sitting for a long time. In order to relieve work fatigue, office workers need to rest and relax after sitting for a long time. Traditional office chairs are composed of a backrest, a seat cushion, and supportable chair legs. The positions of the backrest and the seat cushion are relatively fixed, and cannot be used for people to lie down and rest. Office workers usually need to purchase additional furniture suitable for lying down to achieve sitting office and lying down to rest, but this requires space in the office space, which is not suitable for offices with narrow spaces. Based on the above problems, some chairs with resting feet have gradually appeared, and the foo...

AI Technical Summary

Problems solved by technology

However, in practical application, the applicant found that with this folding leg rest mechanism, the stretched length of the foot rest of the chair is not enough, resulting in insufficient comfort of the foot rest on it.

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