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Back linkage mechanism for sofa

A linkage mechanism and back technology, applied in the field of foldable back mechanism, can solve problems such as bloated sofa

Pending Publication Date: 2021-06-29
KUKA HOME
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Undoubtedly, this will make the whole sofa look bloated

Method used

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  • Back linkage mechanism for sofa
  • Back linkage mechanism for sofa
  • Back linkage mechanism for sofa

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 As shown, a back mechanism for a deformable sofa, the deformable sofa at least includes a seat frame 101, a suspension translation mechanism 102 and a back mechanism 103; Mutual rotatably connected link assemblies, at least one link in the link assembly is rotatably connected to the suspension translation mechanism 102; thus, when the suspension translation mechanism 102 undergoes a posture transition, the back mechanism also makes a corresponding posture transition The connecting rod assembly that constitutes the back mechanism 102 includes several rod bodies that are rotatably connected to each other from head to tail, and one is arranged on one of the rod bodies and is rotatably connected with the other connecting rod through another auxiliary connecting rod, so as to be fixed The backrest mounting seat 1034 above the rod body; the rod body connected head to tail is in a stacked folded state when the deformable sofa is in a sitting position, and when...

Embodiment 2

[0030] Embodiment 2 is a specific method based on Embodiment 1.

[0031] Such as figure 2 As shown, the aforementioned back mechanism for the deformable sofa, such as figure 2 As shown, the connecting rod assembly constituting the back mechanism 103 includes a first connecting rod 1031 that is rotationally connected to the suspension translation mechanism 102 at one end and transmits thrust or pulling force to the subsequent adjacent connecting rods, and the other end of the first connecting rod 1031 is connected to a One end of the middle connecting rod 1032 is connected, the other end of the middle connecting rod 1032 is rotationally connected with one end of the second connecting rod 1033, and the other end of the second connecting rod 1033 is connected with one end of the backrest mount 1034, and the backrest is installed The other end of seat 1034 is rotatably connected to an auxiliary link 1035, and the other end of this auxiliary link 1035 is rotatably connected to t...

Embodiment 3

[0033] Embodiment 3 is another specific manner based on Embodiment 2.

[0034] Such as figure 2 As shown, the aforementioned back mechanism for a movable seat or a deformable sofa realizes the purpose of controlling the action sequence of the backrest mounting seat 1034 in the link assembly by adjusting the straightness of the middle link 1032; specifically, the middle link The rod 1032 is bent in an "L" shape, and the middle connecting rod 1032, the second connecting rod 1033, and the backrest mount 1034 form a connection structure of a rectangular projection plane, wherein the auxiliary connecting rod 1035 and the middle connecting rod The connection point of 1032, that is, the pivot point, and the connection point between the second link 1033 and the intermediate link 1032, that is, the center point of the pivot point, are on the same axis, and the second link 1033, the auxiliary link 1035 and the second link 1033 and the two turning points of the intermediate link 1032 a...

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Abstract

The invention relates to a back linkage mechanism for a sofa. The mechanism is characterized in that a connecting rod assembly forming the back linkage mechanism comprises a plurality of rod bodies and a backrest mounting seat, the rod bodies are rotationally connected end to end, and the backrest mounting seat is arranged on one rod body and rotationally connected with the other connecting rod through the other auxiliary connecting rod, so that the backrest mounting seat is fixed above the rod bodies; the rod bodies which are rotationally connected end to end are in a folded state of being sequentially stacked when the sofa is in a sitting posture; and when the sofa is in a TV posture or a lying posture, the rod bodies are in a half-stretching state or a full-stretching state respectively. The mechanism has the advantages that the back mechanism is designed into a transverse stacking structure and a movement track, so that the space is saved, and a user is prevented from feeling squeezed in the posture changing process of the sofa; and the use comfort of a user is improved.

Description

technical field [0001] The invention relates to a back mechanism for a sofa; in particular, a foldable back mechanism for improving the use comfort of a movable seat or a deformable sofa and further reducing the volume of the backrest frame. Background technique [0002] For a movable seat or a deformable sofa (hereinafter referred to as a sofa), its skeleton is usually composed of a plurality of relatively rotatable or movable link assemblies or rigid components such as plates. When the skeleton changes its posture, it will inevitably squeeze the flexible wrap around it, and at the same time, the squeeze on the flexible wrap will also turn into squeeze on the user, which may affect the use user experience. [0003] For above-mentioned defect, especially in the use process of deformable sofa or claims functional sofa, more easily occurs. Currently, for functional sofas, there are generally three recognized and mutually rotatable postures: sitting posture, TV posture and st...

Claims

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Application Information

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IPC IPC(8): A47C17/17A47C17/86
CPCA47C17/17A47C17/86
Inventor 叶琦琦毕大岩陆建忠褚炳彬
Owner KUKA HOME
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