Mechanical stretching device and chair unit

Abstract

The invention discloses a mechanical stretching device and a seat unit, comprising a fixed bottom rod, a front support rod and a rear support rod rotating in a vertical plane, a cushion board and a backrest arranged on top of the front and rear support rods and connected a board, an ottoman couch, and an ottoman assembly for extending and retracting the ottoman couch; the bottom end of the front support bar is hinged to the front end of the bottom bar, and the bottom end of the rear support bar is hinged to the rear of the bottom bar, The top of the front support rod is hinged with the footrest assembly, and the upper part of the rear support rod is connected to the rear of the cushion board through the intersecting first connecting rod and the second connecting rod; Seat unit, the overall structure of the present invention is simple, two intersecting first connecting rods and second connecting rods are arranged between the cushion board and the rear support rod, the overall operation is stable, and the seat cushion can be rotated during the reclining process of the backrest board. It works by turning a small angle with the backrest, and at the same time can reduce the lifting height of the cushion board, improving the sitting comfort.

Description

technical field [0001] The present invention relates generally to sports upholstered furniture for supporting the body of a user in a substantially sitting-stand position, including recliners, armchairs, sofas, couple seats, modular furniture, theater seats, traditional chairs, and Chairs with movable seats, these pieces of furniture are generally referred to herein as "seating units"; more particularly, the present invention relates to a mechanical stretching device, and in addition, the invention also relates to a seat incorporating such a mechanical stretching device unit. Background technique [0002] There are currently reclining seating units on the market that allow the user to extend the footrest or ottoman forward and recline the backrest relative to the seat. These existing seating units typically provide three basic positions: a standard non-recline stowed position; an extended position; and a reclined position. In the stowed position, the seat is in a generally...

AI Technical Summary

Problems solved by technology

[0004] But generally speaking, the structure of these seat units is different in complexity, but if a more comfortable sitting feeling is required during exercise, a relatively complicated linkage mechanism is required to give this function; this makes the structure of the seat unit more complex. Complex, bulky and heavy, low position accuracy, high production cost, and inconvenient to carry

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