Novel motor-driven mechanical stretching device

Abstract

The invention discloses a novel motor-driven mechanical stretching device. The improved novel motor-driven mechanical stretching device comprises a left side component and a right side component whichare symmetrical, the left side component comprises a leg stretching mechanism, a seat plate linkage mechanism and a backrest mechanism, the seat plate linkage mechanism comprises a front mounting piece, one end of the front mounting piece is pivoted to the front portion of a bottom connecting rod, the other end of the front mounting piece is pivoted with a first front rotating piece, the middle of the front mounting piece is pivoted with a second front rotating piece, the other end of the second front rotating piece is pivoted with a side connecting rod piece, the front end of the side connecting rod piece is pivoted with the middle of the first front rotating piece, the rear end of the side connecting rod piece is pivoted with a rear rotating piece which is pivoted with a rear mounting piece, the other end of the rear mounting piece is pivoted to the rear end of the bottom connecting rod, and the rear rotating piece and the front rotating piece I are pivoted with an assembling side plate simultaneously. The problems that an existing seat plate linkage mechanism is complex in structure, large in number of parts, high in manufacturing cost and high in clamping stagnation risk are solved.

Description

technical field [0001] The invention relates to the field of home furnishing, in particular to a novel motor-driven mechanical stretching device. Background technique [0002] Nowadays, people's "sitting" health problems are becoming increasingly prominent. In order to solve the health problems caused by long-term sitting, a variety of leisure chairs, massage chairs, zero-gravity sofas and functional sofas with various postures and function changes have been developed. Among them, the multifunctional electric sofa has a great application prospect. The multi-functional sofa or seat can realize a smooth change from sitting, leisure to lying, and meet various requirements such as sitting, leisure, and sleeping. [0003] The existing authorized announcement number is CN210330014U, a sofa linkage bracket device, the disclosed extension bracket, especially the seat board linkage mechanism, such as Figure 1-2 As shown, the seat plate linkage mechanism 32 is rotationally connected...

AI Technical Summary

Problems solved by technology

The structure is complex and there are many parts, which not only increases the cost of materials, but also lengthens the production line, resulting in high production costs, high requirements for assembly, and the risk of jamming

[0004] In addition, in the process of adjusting from a sitting position to a leisure position in the prior art, the backrest mechanism moves forward with the overall mechanical stretching device, especially in the application of two persons, two persons with a coffee table, and a three-seat sofa, one position from When the sitting posture is adjusted to a casual posture, the backrest mechanism is misaligned with other backrest mechanisms, which greatly affects the overall aesthetics; secondly, when the sitting posture is adjusted to a casual posture, the backrest mechanism will also sink when it moves forward. There is a risk of the mechanical stretcher touching the ground after prolonged exercise

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