Backrest detection structure in a sofa detection device

Abstract

The invention, which belongs to the detection field, provides a backrest detection structure of a sofa detection apparatus. With the structure, technical problems that the existing sofa detection apparatus can not carry out detection accurately and the like can be solved. The backrest detection structure comprises a backrest cylinder connected to a second fixed rod. The backrest cylinder can slide axially and rotate along the second fixed rod; a piston rod of the backrest cylinder is perpendicular to the second fixed rod; and a backrest pressing plate is hinged to the piston rod of the backrest cylinder. A second sliding sleeve containing an inner sleeve and an outer sleeve is arranged between the backrest cylinder and the second fixed rod; the inner sleeve sleeves the second fixed rod; and the inner sleeve and the second fixed rod are connected by a spline. A drive cylinder that can drive the inner sleeve to slide along the second fixed rod is fixed on one support plate. A U-shaped groove is formed in the outer side of the inner sleeve; and the outer sleeve is arranged in the U-shaped groove in a rotating mode. The body of the backrest cylinder is fixed with the outer sleeve; and a drive structure for driving the outer sleeve to make rotation is arranged between the inner sleeve and the outer sleeve. The provided backrest detection structure has the advantage that the sofa durability can be detected accurately.

Description

technical field [0001] The invention belongs to the detection field, and relates to a sofa detection device, in particular to a backrest detection structure in the sofa detection device. Background technique [0002] A sofa is an upholstered multi-seat chair. A chair with a spring or thick foam, etc., with armrests on both sides, is a kind of soft furniture. [0003] The comfort of the sofa makes it more frequently used in furniture. The comfort of the sofa is mainly provided by springs and foamed plastics. In long-term use, springs and foamed plastics are required to withstand uninterrupted and high-frequency use. Therefore, When the sofa leaves the factory, it must be tested for durability. [0004] At present, there is no sofa durability test, but the durability of the sofa is directly judged by the performance of springs and foam plastics. However, there are uncertainties in this method, so the assembly status and stress of springs and foam plastics also directly affec...

AI Technical Summary

Problems solved by technology

[0004] At present, there is no sofa durability test, but the durability of the sofa is directly judged by the performance of springs and foam plastics. However, there are uncertainties in this method, so the assembly status and stress of springs and foam plastics also directly affect its durability. Durability properties, which cannot be obtained and tested directly through the properties of springs and foams, so existing methods are inaccurate

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