GB 811-2022 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB 811-2022 | English | 560 |
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Helmets for motorcycle and electric bicycle users
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| GB 811-2010 | English | 145 |
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Helmets for motorcyclists
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| GB 811-1998 | English | 479 |
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Helmets for motorcycle users
| Obsolete |
| GB 811-1989 | English | RFQ |
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Helmets for motor vehicle users
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GB 811-2022: Helmets for motorcycle and electric bicycle users---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB811-2022
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 13.340.20
CCS C 73
Replacing GB 811-2010
Helmets for Motorcycle and Electric Bicycle Users
Issued on. DECEMBER 1, 2022
Implemented on. JULY 1, 2023
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative References... 5
3 Terms and Definitions... 5
4 Product Classification... 8
5 Requirements... 10
6 Test Methods... 18
7 Inspection Rules... 39
8 Marking, Identification, Product Instruction Manual, Packaging, Transportation and
Storage... 40
9 Requirements for Implementation Transition Period... 42
Appendix A (normative) Shape and Size of Testing Headform above the Reference
Plane... 43
Appendix B (normative) Shape and Size of Testing Headform below the Reference
Plane... 49
Appendix C (normative) Requirements and Test Methods for Helmet Type
Identification... 56
Bibliography... 59
1 Scope
This document specifies the product classification, requirements, inspection rules and marking,
identification, product instruction manual, packaging, transportation and storage of helmets for
motorcycle and electric bicycle users, and describes the test methods.
This document is applicable to the helmets worn by drivers and passengers of motorcycles and
electric bicycles.
This document does not apply to the helmets worn by bikers, skateboarders and roller skating
athletes, nor does it apply to occupational safety helmets.
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through the normative references in this text. In terms of references with a specified date, only
versions with a specified date are applicable to this document. In terms of references without a
specified date, the latest version (including all the modifications) is applicable to this document.
GB/T 2410-2008 Determination of the Luminous Transmittance and Haze of Transparent
Plastics
GB/T 18833 Retroreflective Sheeting for Traffic Control
3 Terms and Definitions
The following terms and definitions are applicable to this document.
3.1 Helmet for Motorcycle and Electric Bicycle Users
Helmet for motorcycle and electric bicycle users refers to a device of reducing head injuries of
motorcycle and electric bicycle occupants in accidents.
3.2 Shell
Shell refers to the outer structure of the helmet for motorcycle and electric bicycle users, which
presents the basic shape of the helmet.
3.3 Protective Padding
Protective padding refers to a form-fitting padding that absorbs collision energy.
3.4 Comfort Padding
Comfort padding refers to a padding that guarantees comfortable fit on the head.
3.5 Retention System
Retention system refers to a component that ensures the helmet for motorcycle and electric
bicycle users is securely worn on the head.
4 Product Classification
4.1 Type
4.1.1 In accordance with the applicable objects, the helmets for motorcycle and electric bicycle
users (hereinafter referred to as “helmets”) are divided into Type A and Type B. Type A is
helmets for motorcycle riders, which is applicable to motorcycle riders and electric bicycle
riders; Type B is helmets for electric bicycle riders, which is merely applicable to electric
bicycle riders.
4.1.2 In accordance with the shape, the helmets are divided into Shape 1, Shape 2 and Shape 3.
Shape 1 is full-helmet, Shape 2 is 3/4 half-helmet, and Shape 3 is 1/2 half-helmet, as it is shown
in Figure 3.The type, shape and applicable objects of the helmets shall comply with the
stipulations of Table 1.
4.2 Specifications
In accordance with the size of the head circumference, the helmets are divided into five
specifications. extra-small, small, medium, large and extra-large. The specifications, head
circumference size and the model of testing headform shall comply with the stipulations of
Table 2.
5 Requirements
5.1 Structure
5.1.1 Structural composition
The structural composition of the helmets includes the shell, protective padding, comfort
padding, retention system and goggles, etc. The required structural composition of different
types of helmets shall comply with the stipulations of Table 3.
Table 3 -- Structural Composition of Helmet
5.1.2 Shell
5.1.2.1 The shell shall cover the protect section specified in 5.2.1.
Helmet
Specifications
NOTE. x represents the vertical distance from the basic plane to the reference plane, y represents the vertical distance from
the reference plane to the top of the testing headform.
5.1.2.2 The outer surface shall be a streamlined curved surface design and comply with the
following requirements.
5.1.2.3 The inner surface shall comply with the following requirements.
5.1.3 Protective padding
The protective padding shall use materials with buffer performance, collision energy absorption
performance, and non-toxic and harmless to the human body, and comply with the following
requirements.
5.1.4 Comfort padding
The comfort padding shall use durable materials that feel comfortable, breathable, non-toxic
and harmless to the skin, and comply with the following requirements.
5.1.5 Retention system
The parts of the retention system shall be permanently attached to the retention system or the
helmet, and comply with the following requirements.
a) If the retention system includes a chin strap, the width of the strap shall be not less
than 20 mm;
b) If the retention system has fastening devices, such as. double D rings and sliding rods,
when adjusting the retention system, a sufficient adjustment margin shall be reserved;
c) If quick-release devices, for example, wearing buckles, are used, the method of
opening shall be simple and easy, and shall be able to prevent possible mis-operations.
The push rod, button or other parts used for the opening mechanism shall be red or
orange, and can only be opened when consciously operated;
d) If the locking device of the fixing strap is designed to be opened through the mode of
applying pressure to a certain part, then, when tested in accordance with the method
of 6.2.2, the locking device cannot be opened;
5.1.6 Goggles
The goggles shall be made of materials that comply with the light transmission performance
and impact strength performance, and satisfy the following requirements.
5.2 Protect Section and Testing Section
5.2.1 Type A1, Type A2, Type B1 and Type B2 helmets. the protect section shall cover the part
above the ACDEF envelope in Figure 5; the testing section shall cover the diagonal shaded area
in Figure 5.The size of the protect section and testing section range of the helmets of different
specifications shall comply with the stipulations of Table 4.
5.2.2 Type A3 and Type B3 helmets. the protect section shall cover the area above the A-A line
in Figure 6; the testing section shall cover the diagonal shaded area in Figure 6.
5.3 Mass
In accordance with the method specified in 6.3, conduct the test. The mass of the helmet
(including accessories) shall comply with the stipulations of Table 5.
5.4 Performance
5.4.1 Field of view
In accordance with the method specified in 6.4, conduct the test. The left and right horizontal
fields of view shall be not less than 105; the upper field of view shall be not less than 7; the
lower field of view shall be not less than 45.
5.4.2 Goggles
5.4.2.1 Impact strength
In accordance with the method specified in 6.5.1, conduct the test. The goggles shall not be
broken, or the edges of the broken fragments shall not have sharp angles less than 60.
5.4.2.2 Visible light transmittance
In accordance with the method specified in 6.5.2, conduct the test. The visible light
transmittance in the field of view of the goggles shall be not less than 85%.
5.4.2.3 Abrasive resistance
In accordance with the method specified in 6.5.3, conduct the falling sand test. After the test,
the goggles shall have no damages, such as. breakage and dent, that may affect the use. Test the
haze of the goggles, which shall not be greater than 10%.
5.4.3 Shear force of surface convex structure
In accordance with the method specified in 6.6, conduct the test. The convex structure being
tested shall be able to be sheared and separated, or shall not prevent the cutter from sliding over
the convex part.
5.4.4 Surface friction force
In accordance with the method specified in 6.7, conduct the test. The carrier shall not be stopped
by friction.
5.4.5 Rigidity
In accordance with the method specified in 6.8, conduct the test. Type A1, Type A2, Type B1
and Type B2 helmets shall comply with the following requirements.
a) Under a force of 630 N, the difference between the deformation along the text axis
and the deformation under the initial load of 30 N shall be not greater than 40 mm;
b) When the unloading recovery load is 30 N, the difference between the measured
deformation and the deformation of the initial load of 30 N shall be not greater than
15 mm.
5.4.6 Stability of fixture
In accordance with the method specified in 6.9, conduct the test. The rotation angle of Type A1,
Type A2 and Type A3 helmets shall not be greater than 30; Type B1, Type B2 and Type B3
helmets shall not fall off from the testing headform.
5.4.7 Strength of retention system
In accordance with the method specified in 6.10, conduct the test. The elongation of the strap
shall not exceed 25 mm; there shall be no phenomena such as. tearing of strap, slipping of strap,
falling off of connector, loosening of buckle, and damage of retention system, etc.
5.4.8 Absorption of collision energy
In accordance with the method specified in 6.11, conduct the test. Measure by the acceleration
transmitted to the testing headform and its action time, which shall comply with the stipulations
of Table 6.
6 Test Methods
6.1 Environmental Conditions of the Laboratory
6.2 Specifications, Structure and Test of Protect Section
6.3 Mass Test
6.3.1 Test tools
Weighing equipment with an accuracy of not greater than 0.01 kg and a measuring range of 0kg ~ 2 kg.
6.3.2 Test procedures
Weigh and record the mass of the helmet, expressed in kg. The result shall retain two decimal places.
6.4 Test of Field of View
6.4.1 Test device
The test device is composed of angle scale, testing headform and supporting structure of testing
headform, etc.
6.4.2 Test procedures
In accordance with the method of 6.2.2, correctly put the helmet on an appropriate testing
headform, check whether there are any parts blocking the view within the limited field of view
in the following three directions.
6.5 Goggle Performance Test
6.5.1 Impact strength performance test
6.5.1.1 Test device
6.5.2 Visible light transmittance test
Place the goggles to be inspected on a measuring device, within the field of view specified in
6.4.2, randomly select three points on the goggles for inspection, and the spacing among each
point is not less than 75 mm. In accordance with the method of Chapter 7 in GB/T 2410-2008,
test the visible light transmittance of the goggles.
6.6 Shear Force Test of Surface Convex Structure
6.6.1 Test equipment
6.6.1.1 Equipment composition
The equipment is composed of carrier, horizontal guiding device, pulley, drop hammer,
headform support, lever structure with a hinge, and loading device, etc., as it is shown in Figure 11.
7 Inspection Rules
7.1 Type Inspection
7.1.1 The type inspection items shall comply with the stipulations of Table 12.
7.1.2 Under one of the following circumstances, type inspection shall be conducted.
7.2 Exit-factory Inspection
7.2.1 The exit-factory inspection items are determined by the manufacturer, and shall include
the items specified in Table 12.
7.2.2 Before exiting the factory, each batch of products shall be subjected to exit-factory
inspection.
7.2.3 Products of the same structure, material (the helmet shell has the same material),
specification and size shall be considered as a variety, and for each variety, 3,000 PCS shall be
considered as one inspection batch (if there are less than 3,000 PCS, count them as one batch);
one helmet is sampled from each batch. Adopt the random sampling mode and take samples
from the finished product warehouse of the production plant.
7.3 Determination Rules
7.3.1 For the type inspection, if an individual indicator of a performance is disqualified, then,
the batch of products shall be determined as disqualified.
7.3.2 For the exit-factory inspection, if the penetration resistance performance is disqualified,
then, the batch of products shall be determined as disqualified.
8 Marking, Identification, Product Instruction Manual,
Packaging, Transportation and Storage
8.1 Marking and Identification
8.1.1 Each helmet shall have the following permanent markings.
a) Product name (“helmet for motorcycle users” or “helmet for electric bicycle users”);
b) Name and address of manufacturer / production plant;
c) Trademark or brand;
d) Type (“A1” “A2” “A3” “B1” “B2” “B3”);
e) Restricted use mark (Type A3 helmets shall be marked as shown in Figure 19, Type
B1, Type B2 and Type B3 helmets shall be marked as shown in Figure 20);
g) Production date, production batch No. or serial No.;
h) Serial No. of implemented standard;
i) Certification mark of certified products (if any);
j) Helmet mass (kg);
k) Mark of conformity.
8.1.2 The rear of the outer surface of the shell of each helmet shall have a permanent marking,
which is used to identify the type of helmet. The type identification of the helmets shall comply
with the stipulations of Appendix C.
9 Requirements for Implementation Transition Period
For Type A helmets produced or imported before the date of implementation of this document,
the requirements of this document shall be satisfied from the 7th month since the date of
implementation of this document.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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