Method for testing body pressure distribution stability of hard seat

Abstract

The invention relates to a method for testing the body pressure distribution stability of a hard seat. The method comprises steps that 1, the stress of a foot sole is tested, and that stability is unqualified is determined when the ratio of the stress weight of the foot sole to the weight of a human body is more than 3 / 5; 2, body pressure distribution is tested, and the following indexes are calculated, including a distance Lf from the maximum hip pressure point to a front end, the distance L1 from the maximum hip pressure point to a rear end, the front longitudinal moment integral Mf of the maximum hip pressure point, the rear longitudinal moment integral M1 of the maximum hip pressure point, and the quotient D of the front longitudinal moment integral and the rear longitudinal moment integral of the maximum hip pressure point; the larger the quotient D of the front longitudinal moment integral and the rear longitudinal moment integral of the hip maximum pressure point is, the poorerthe stability is, when the D is larger than or equal to 4, the stability of a seat surface is unqualified. The method for testing the body pressure distribution stability of the hard seat is advantaged in that the method is convenient to implement and good in evaluation effect.

Description

technical field [0001] The invention relates to a testing method for furniture products, in particular to a method for testing the body pressure distribution stability of a hard seat. Background technique [0002] The present invention is mainly used for class chairs without armrests, and can also be used for public seats (one-piece dining tables and chairs in canteens, waiting room seats, etc.). The special point of this type of seat is that the seat surface is hard Yes, no soft bag, no elasticity; although a backrest is provided, in most use cases, only the seat surface is used, and the backrest is rarely reclined. For example, in the use of chairs, students generally do not use the backrest when reading and writing. Usually the inclination of the seat surface of this type of hard seat has a great influence on the comfort of sitting. First of all, the extreme reclining of the seat surface should be ruled out, because the reclining of the seat surface will affect the phys...

AI Technical Summary

Problems solved by technology

In addition, to judge whether the seat is healthy and comfortable, the maximum pressure (P m ), total pressure (P a ), average pressure (P v ), contact area (S), pressure gradient, and isobaric distribution diagrams, etc., but the main purpose of these indicators is to slow down the pressure on the ischial tuberosity, so that the pressure on the buttocks is more in line with the physiological structure, and it is not suitable for sitting. Judgment of stability

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