GB 14166-2024 PDF English
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| GB 14166-2024 | English | 1265 |
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Safety-belts and restraint systems for occupants of power-driven vehicles
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| GB 14166-2013 | English | 145 |
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Safety-belts, restraint systems, child restraint systems and ISOFIX child restraint systems for occupants of power-driven vehicles
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| GB 14166-2003 | English | RFQ |
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Safety belts and restraint systems for adult occupants of motor vehicles
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| GB 14166-1993 | English | 719 |
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Safety belts and restraint systems for adult occupants of motor vehicles
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GB 14166-2024: Safety-belts and restraint systems for occupants of power-driven vehicles---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/GB14166-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.60
CCS T 26
Replacing GB 14166-2013
Safety-belts and restraint systems for occupants of power-
driven vehicles
Issued on: SEPTEMBER 29, 2024
Implemented on: JULY 01, 2025
Issued by. State Administration for Market Regulation;
National Standardization Administration.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 6
4 Technical requirements... 16
5 Test methods... 25
6 Requirements for installation on vehicles... 37
7 Instructions for use... 46
8 Determination of the same type... 47
9 Implementation of standards... 47
1 Scope
This document specifies the technical requirements, installation requirements on
vehicles, use requirements of safety belts and restraint systems for motor vehicle
occupants; describes the corresponding test methods and the same type determination.
This document applies to.
- Categories M and N vehicles where safety belts and restraint systems installed as
independent equipment for adult occupants on forward-facing seats, rearward-
facing seats, side-facing seats;
- Categories M and N vehicles whose forward-facing seats, rearward-facing seats,
side-facing seats are equipped with safety belts and restraint systems as
independent equipment for adult occupants;
- Categories M and N vehicles with child restraint systems installed;
- All seating positions where safety belts and corresponding safety belt reminders
are installed on categories M and N vehicles;
- The installation of safety belts and integrated universal ISOFIX child restraint
systems designed and installed for side-facing seats of category M3 (II, III or B)
vehicles on vehicles, but only when required by the vehicle manufacturer.
2 Normative references
The contents of the following documents constitute essential provisions of this
document through normative references in the text. Among them, for dated references,
only the version corresponding to that date applies to this document; for undated
references, the latest version (including all amendments) applies to this document.
GB 4094 Motor vehicles - Symbols for controls, indicators and tell-tales
GB/T 8427 Textiles - Tests for color fastness - Color fastness to artificial light.
Xenon arc
GB 11551 The protection of the occupants in the event of a frontal collision for
motor vehicle
GB 11552-2009 The interior fittings of passenger car
GB 11557 The stipulation protecting drivers from being injured by motor vehicle
steering mechanism
GB 13057 Strength of seats and their anchorages of passenger vehicles
GB 13094-2017 The safety requirements for bus construction
GB 14167-2024 Safety-belt anchorages and restraint systems anchorages for
3 Terms and definitions
The terms and definitions defined in GB 15083, GB/T 15089, GB 14167-2024, GB
27887, GB/T 29120, as well as the following terms and definitions, apply to this
document.
3.1
Safety belt
A device consisting of a strap, a buckle, an adjustment piece, as well as a attachment
that fixes it to the inside of a motor vehicle.
Note 1.An assembly used to reduce the degree of injury to the wearer by limiting the
movement of the wearer's body, when the vehicle suddenly decelerates or collides.
Note 2.Includes a device for energy absorption or retracting the strap.
3.2
Strap
A flexible component used to restrain the occupant's body and transmit the forces
received to the safety belt fixing point.
3.3
Buckle
A device that allows the wearer to be restrained by the safety belt and can be quickly
released.
Note. The buckle may be equipped with an adjustment device, but the buckle of the harness
belt is an exception.
3.4
Belt adjusting device
A device that allows the safety belt to be adjusted according to the seat position and
the requirements of the wearer.
Note. The adjusting device may be a part of the buckle, or retractor, or other parts of the
safety belt.
3.5
Pre-loading device
An additional or integrated device that tightens the safety belt strap in the event of
a collision, to reduce the amount of slack in the safety belt.
4 Technical requirements
4.1 General requirements
4.2 Rigid parts of safety belts
4.2.1 General requirements
4.2.2 Buckle
4.2.3 Safety belt adjustment device
4.2.4 Attachments and height adjusters
Attachments shall be subjected to strength tests in accordance with the provisions of
5.5.1 and 5.5.2.Safety belt height adjusters that have not been tested in accordance with
4.5.1 and 5.4.1 of GB 14167-2024 shall be subjected to strength tests in accordance
with 5.5.2.The above parts shall not break or come apart under the specified load.
4.2.5 Retractor
4.2.5.1 Manual unlocking retractor
4.2.5.1.1 The strap of a safety belt assembly equipped with a manual unlocking retractor
shall not be pulled out more than 25 mm between the retractor locking positions.
4.2.5.1.2 When a force of not less than 14 N and not more than 22 N is applied in the
normal pulling direction of the strap, the length of the strap pulled out from the manual
unlocking retractor shall not exceed 6 mm.
4.2.5.1.3 After the retractor is tested according to the following steps, it shall be able to
operate normally and meet the requirements of 4.2.5.1.1 and 4.2.5.1.2.
a) Pull out the strap according to the method specified in 5.6.1; perform 5000
repeated pull-out and retracting tests;
b) Perform the corrosion test specified in 5.2 and the dust test specified in 5.6.3;
c) Repeat 5000 pull-out and retracting tests according to the method of 4.2.5.1.3a).
4.2.5.2 Self-locking retractor
4.2.5.3 Emergency locking retractor
4.2.6 Pretensioner
4.2.6.1 After the corrosion test specified in 5.2, the pretensioner (including the impact
sensor connected to the device by the original attachment without current) shall be able
to operate normally.
4.2.6.2 It shall be verified that the misoperation of the device will not cause harm to the
wearer's body.
4.2.6.3 The gunpowder pretensioner shall meet the following requirements.
a) After the environmental test specified in 5.9, the pretensioner shall not be triggered
due to temperature reasons; meanwhile the device shall operate normally;
b) Measures shall be taken to prevent the hot gas discharged during the explosion of
gunpowder from igniting nearby flammable materials.
4.3 Strap
5 Test methods
5.1 Samples for safety belt or restraint system tests
5.1.1 Two sets of safety belts or restraint systems are required for buckle inspection,
buckle low temperature test, low temperature test specified in 5.5.4 (if necessary),
buckle durability test, safety belt corrosion test, retractor performance test, dynamic test,
buckle opening test after dynamic test. One of these two sets of samples will be used
for safety belt or restraint system inspection.
5.1.2 One set of safety belt or restraint system is required for buckle inspection and
strength test of buckle, attachment mounting seat, safety belt adjustment device,
retractor (if necessary).
5.1.3 Two sets of safety belts or restraint systems are required for buckle inspection,
micro slip test, wear test. One of these two sets of samples will be used for safety belt
adjustment device test.
5.1.4 Strap samples are required for strap breaking strength test.
5.1.5 Samples for safety belt or restraint system tests shall be carried out in accordance
with the provisions of Appendix C.
5.2 Corrosion test
5.2.1 Place a complete set of safety belt assemblies in the test chamber specified in
Appendix D. For assemblies equipped with retractors, the strap shall be pulled out
completely except for 300 mm ± 3 mm. The test shall be continued for 50 hours except
for short interruptions such as necessary inspection or replenishment of salt solution.
5.2.2 After the corrosion test is completed, the safety belt assembly shall be gently
rinsed or immersed in running water at a temperature not higher than 38 °C to remove
salt traces; then it is dried at room temperature for 24 hours and inspected according to
4.2.1.2.
5.3 Micro-slip test
5.3.1 The sample shall be kept in an environment at a temperature of 20 °C ± 5 °C and
a relative humidity of (65 ± 5)% for at least 24 hours. The test shall be carried out at a
temperature of 15 °C ~ 30 °C.
5.3.2 Place the free part of the adjustment device on the workbench with the upper or
lower part facing up according to the loading state.
5.3.3 The test is carried out in accordance with the requirements of Appendix E. A 50
N load is suspended at the lower end of the strap; the other end is reciprocated back and
forth at a stroke of 300 mm ± 20 mm.
5.3.4 If the strap has a free end for storage, this end shall not be fixed or clamped in the
load section.
5.3.5 The installation state of the strap on the test bench shall be consistent with the
installation state of the actual vehicle. When it is relaxed, it droops from the adjustment
device to form a concave curve. The 50 N load applied to the test bench shall be
vertically guided, to prevent load swing and safety belt twisting; the attachment shall
be fixed on the 50 N load according to the loading state.
5.3.6 Before the test officially starts, 20 cycles shall be pre-operated to correctly
position the self-tightening system.
5.3.7 Complete 1000 tests at a frequency of 0.5 cycles/s and a total stroke of 300 mm ±
20 mm. The 50 N load acts only within the 100 mm ± 20 mm moving range within half
a cycle.
5.3.8 The test device shall comply with the requirements of Appendix E.
5.4 Strap treatment and breaking strength test (static)
5.7 Dynamic test of safety belt assembly or restraint system
5.7.1 The safety belt assembly shall be installed on a pulley equipped with a seat and a
universal fixing point (see Figure J.1 in Appendix J). If the safety belt assembly is used
for a specific vehicle or a special type of vehicle, the distance between the dummy and
the fixing point shall be determined by the testing agency, in accordance with the
installation instructions provided with the safety belt or the information provided by the
vehicle manufacturer.
If the safety belt is equipped with a safety belt height adjuster, the safety belt height
adjuster shall be installed in the installation position and fixing method given by the
vehicle design requirements.
When a dynamic test has been carried out on a vehicle model, meanwhile each fixing
point of other vehicle models is less than 50 mm away from the fixing point
corresponding to the completed test safety belt, there is no need to repeat the test. The
manufacturer may also choose to determine the assumed fixing points, to cover the
maximum number of real fixing points.
Before the dynamic test, the dummy wearing a cotton jacket shall be tilted forward until
350 mm of the strap is pulled out from the retractor and then returned to the initial
position.
5.7.4 The free end of the strap shall extend outside the adjustment device and be of
sufficient length to allow slippage.
5.7.5 Deceleration or acceleration device can be tested using one of the following two
devices.
5.7.8 If the pulley speed is greater than the specified value and/or the acceleration curve
exceeds the upper limit of the shaded area in Figure K.1, meanwhile the safety belt
meets the requirements, the test shall also be considered to meet the requirements of
5.7.
5.8 Buckle opening test
5.9 Additional test for temperature conditioning of safety belts with pretensioners
The pretensioner may be removed from the safety belt to be tested and placed at 60 °C
± 5 °C for 24 hours; then the temperature is raised to 100 °C ± 5 °C for 2 hours; then
kept at -30 °C ± 5 °C for 24 hours. After temperature conditioning, the device shall be
heated to ambient temperature. If the device is removed from the safety belt, it shall be
installed back on the safety belt.
5.10 Test report
The test report shall record the results of all tests in Chapter 5, as well as the following.
6 Requirements for installation on vehicles
6.1 Equipment of safety belts and restraint systems
6.2 General requirements
6.2.1 Safety belts, restraint systems, ISOFIX child restraint systems and i-Size child
restraint systems in A.4 shall be able to be fixed to the fixing device, in accordance with
the provisions of GB 14167-2024; meet the design and size characteristics, number of
fixing points, strength requirements. For i-Size child restraint systems, vehicle floor
contact surface support shall also be provided.
6.2.2 Safety belts, restraint systems, child restraint systems and ISOFIX child restraint
systems recommended by the vehicle manufacturer (see A.4) shall be installed and meet
the following requirements.
6.3 Special requirements for rigid parts integrated into safety belts or restraint
systems
6.3.1 Rigid parts such as buckles, adjustment devices and attachments shall not increase
the risk of physical injury to the wearer or other occupants in an accident.
6.3.2 The device for unbuckling the buckle shall be clearly visible and easy to reach;
the design shall ensure that the device for unbuckling the buckle will not be opened
accidentally. The buckle shall be located in a place that is easy for rescuers to reach, so
that the wearer can be rescued in an emergency.
The buckle, whether or not it bears the mass of the wearer, shall be installed so that
the wearer can open it with one hand in one direction with a simple movement.
For safety belts or restraint systems for the front outer seating positions, except for
harness belts, the buckle shall be able to be locked in the same way.
If the buckle contacts the wearer, it shall be checked to confirm that the width of the
contact surface is not less than 46 mm.
If the buckle contacts the wearer, it shall be checked to confirm that the contact
surface shall meet the requirements of 6.2.2 a).
6.3.3 When the safety belt is fastened, the safety belt shall be able to adjust
automatically to the wearer, or the manual adjustment device shall be easily accessible
and convenient to use when the wearer sits down. The safety belt shall be able to be
tightened with one hand, to adapt to the wearer's sitting posture and vehicle seat position.
6.3.4 The installation of safety belts or restraint systems integrated into the retractor
shall enable the retractor to operate normally and effectively retract the strap. If both a
safety belt height adjuster and a flexible shoulder height adjuster are installed, it shall
be checked at least in the highest and lowest positions whether the retractor
automatically adjusts the strap of the relevant wearer's shoulder after the buckle is
buckled, and whether the lock tongue is retracted when the buckle is not buckled.
6.3.5 In order to inform vehicle users of the provisions for carrying child passengers,
categories M1, M2, M3, N1 vehicles shall provide relevant information in accordance
with Appendix A. The requirements for ISOFIX positions and i-Size seating positions
shall comply with the provisions of 4.1.3 of GB 14167-2024.If the M1 vehicle cannot
be equipped with an i-Size seating position, two ISOFIX positions shall be installed.
The first ISOFIX position shall be able to install at least one of the three forward-facing
devices defined in A.3.4; the second ISOFIX position shall be able to install at least one
of the rear-facing devices defined in A.3.4.For the second ISOFIX position, if the
second row of seats cannot be equipped with a rear-facing device due to vehicle design
reasons, the fixing device is allowed to be installed in other seating positions of the
vehicle.
6.3.6 The i-Size seating position shall ensure the installation of the ISOFIX child
restraint fixture "ISO/F2X", "ISO/R2" and the support leg installation assessment
volume (see A.3), as well as the installation of the booster seat fixture "ISO/B2" [see
Figure A.15g)] where there is no ISOFIX attachment. In order to prove that the above
devices can be installed on all adjacent i-Size seating positions at the same time, the
distance between the vertical center planes of independent adjacent seating positions
shall be at least 440 mm.
6.4 Safety belt reminder device
6.4.1 Position requirements
6.4.2 General requirements
6.4.3 Safety belt reminder for the driver and other passengers in the same row as
the driver
6.4.3.1 The safety belt reminder for the driver and other passengers in the same row as
the driver shall comply with the requirements of 6.4.2.
6.4.3.2 The color and symbol of the visual warning signal shall comply with the
provisions of GB 4094.
6.4.3.3 When the safety belt is not fastened or the safety belt is unfastened during
normal operation of the vehicle, meanwhile the vehicle meets one of the conditions or
any combination of conditions listed in 6.4.2.4.1 at the same time, the second-level
warning signal shall be activated.
6.4.4 Safety belt reminder for rear passengers
6.4.4.1 Safety belt reminder for rear passengers shall comply with the requirements of
6.4.2.
6.4.5 Safety belt reminder device shut-off function
6.4.5.1 When the safety belt reminder device has a short-term shut-off function, shutting
off the safety belt reminder device shall be significantly more difficult than buckling
and unbuckling the safety belt (such as including the operation of a specific control not
integrated in the safety belt buckle), meanwhile this operation is only allowed when the
vehicle is stationary. When the ignition switch is turned off or the main control switch
is turned off for more than 30 minutes and then turned on again, the short-term shut-off
function of the safety belt reminder device shall be reactivated. The short-term shut-off
function of the relevant visual reminder shall not be provided.
6.4.5.2 When the safety belt reminder device has a long-term shut-off function, it can
only be shut off after a series of shut-off operation procedures described in detail in the
manufacturer's technical manual and/or using tools (mechanical, electronic or digital,
etc.) not provided by the vehicle. The long-term shut-off function of the relevant visual
reminder shall not be provided.
7 Instructions for use
If the safety belt is provided separately for the vehicle, the packaging and installation
instructions of the safety belt shall clearly indicate the corresponding model in
accordance with the provisions of Appendix N.
8 Determination of the same type
If the following provisions are met, it is regarded as the same type of vehicle.
a) Performance of safety belt assembly.
1) The structure, function, model, manufacturer of rigid parts (buckles,
adjustment devices, attachments, height adjusters, retractors, pre-tensioners)
are the same;
2) The structure, function, model, manufacturer of strap are the same;
3) The types of safety belts are the same.
b) Requirements for the installation of vehicle safety belts and child restraint systems
on vehicles.
1) The type, structure, and position of safety belts are the same;
2) The type, position, number of child restraint systems installed are the same.
c) The type and control method of safety belt reminder devices are the same.
d) The type and position of restraint systems affecting dynamic tests are the same.
9 Implementation of standards
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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