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QC/T 55-2023Test methods for automobile seat comfort (English PDF)

汽车座椅舒适性试验方法

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Issued by

MIIT

Level / Type

Industry · Recommended

Issue date

April 21, 2023

Implementation date

November 1, 2023

Scope

QC/T 55-2023 is the English-translated version of 汽车座椅舒适性试验方法.

QC/T 55-2023 is the Chinese standard "Test methods for automobile seat comfort". Its scope clause reads: This document specifies the test methods for vehicle seat comfort.

This document is applicable to seats in Category M1 vehicles as well as seats in Categories M2 and M3 vehicles of Classes B and III. Its clauses include terms and definitions; specimen and loading board.

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Document preview — QC/T 55-2023

National Standard of the People's Republic of China

Replacing: QC/T 55-1993

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

Foreword II
1 Scope
2 Normative references
3 Terms and definitions
4 Specimen and loading board
5 Static load test
6 Surface hardness
7 Pressure distribution test
8 Subjective evaluation test
9 Frequency response characteristics test
10 Random vibration test
11 Impact energy absorption test
12 Test groups and test reports
Annex A (Informative) Subjective evaluation items for seat comfort

1 Scope

This document specifies the test methods for vehicle seat comfort.

This document is applicable to seats in Category M1 vehicles as well as seats in Categories M2 and M3 vehicles of Classes B and III.

2 Normative references

The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

GB/T 4970 Method of running test - Automotive ride comfort

GB 10000 Human dimensions of Chinese adults

GB/T 29120-2012 Procedure for H l-point and R-point determination

3 Terms and definitions

For the purposes of this document, the terms and definitions given in GB/T 29120 and the following apply.

3.1 seat comfort

level of comfort of the driving/riding experience that vehicle seats can provide to the driver/passengers during the traveling or parked state of the vehicle

3.2 static stiffness

ability of an object to resist deformation under static load

3.3 hysteresis ratio

ratio of power lost in rebound to that consumed in compression of a product during the static stiffness test

3.4 hardness profile

deformation of localized points on the riding surface of seats under applied forces

...

4 Specimen and loading board

4.1 Specimens

4.1.1

Seat specimens shall meet the requirements set by the vehicle manufacturer for the designed H-point and torso angle.

4.1.2

Before the test, the seat shall be placed in the environment of with a temperature of 23°C±2°C and a relative humidity of 50%±5% for more than 12h.

4.1.3

It shall have been more than 96h since the parts used in the seat specimens (e.g. foam parts and plastic parts) were made.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 20 pages — is available in the English PDF.

Editions of QC/T 55

Edition	Title	Revision	Status
QC/T 55-2023	Test methods for automobile seat comfort	current edition	Current
QC/T 55-1993	Test methods for automobile seat comfort	previous edition	Superseded

This page sells the current edition, QC/T 55-2023. Earlier editions are listed for reference only.

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