GB 27887-2024 Child restraint systems for power-driven vehicles English, Anglais, Englisch, Inglés, えいご
1 Scope
This document defines the terms and definitions of child restraint system (CRS) for power-driven vehicles, specifies the general requirements, performance requirements, test reports, identification and instructions, and describes the corresponding test methods.
This document is applicable to the following types of CRS suitable for installation on power-driven vehicles:
a) Integral universal ISOFIX child restraint system (i-Size CRS);
b) Integral ISOFIX child restraint system for specific vehicle;
c) Integral universal belted child restraint system;
d) Integral universal belted child restraint system for specific vehicle;
e) Non-integral universal child restraint system with backrest (i-Size booster seat);
f) Non-integral child restraint system with backrest for specific vehicle (specific vehicle booster seats);
g) Non-integral universal child restraint system without backrest (universal booster cushion);
h) Non-integral child restraint system without backrest for specific vehicle (specific vehicle booster cushion).
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 231.1 Metallic materials - Brinell hardness test - Part 1: Test method
GB/T 3505 Geometrical product specifications (GPS) - Surface texture: Profile method - Terms, definitions and surface texture parameters
GB/T 4780 Terms for motor vehicle body
GB 6675.3 Safety of toys - Part 3: Flammability
GB 6675.4 Safety of toys - Part 4: Migration of certain elements
GB 8410 Flammability of automotive interior materials
GB/T 8427 Textiles - Tests for color fastness - Color fastness to artificial light: Xenon arc fading lamp test
GB 14166 Safety-belts and restraint systems for occupants of power-driven vehicles
GB 14167 Safety-belt anchorages and restraint systems anchorages for occupants of power-driven vehicles
ISO 2575:2010 Road vehicles - Symbols for controls, indicators and tell-tales
ISO 6487:2015 Road vehicles - Measurement techniques in impact tests - Instrumentation
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 4780, GB 14166, GB 14167 and the following apply.
3.1
child restraint system; CRS
child seat
device restraining the movement of the child's body to reduce the injury to the wearer in the case of collision accident or sudden deceleration of the vehicle, keeping the child occupant in a sitting or sleeping position
3.2
integral class
child restraint system category in which a child is only restrained by the components of the CRS, rather than directly being restrained by the vehicle belt
Note: The components of CRS include child harness belt and impact shield.
3.3
non-integral class
child restraint system category in which a child is restrained in the child restraint system directly by the vehicle belt
3.4
rigid fixture for the child restraint system
ISOFIX
international universal child restraint system that connects the CRS with the vehicle through two lower anchorages on the vehicle, two corresponding rigid connecting devices on the child restraint system, and a device that restricts the child restraint system from rotation
3.5
built-in child restraint system
child restraint system that is a part of a vehicle or a vehicle seat and is fixed to the vehicle
3.6
universal child restraint systems
product type applicable to child restraint systems on all i-Size seats or all universal seating positions
3.6.1
integral universal ISOFIX child restraint system
i-Size CRS
ISOFIX child restraint system which is suitable for all i-Size seats of the vehicle, and restricts the child restraint system from rotating through ISOFIX top tether straps or support legs
3.6.2
integral universal belted child restraint system
child restraint system which is suitable for all universal seating positions of the vehicle and is only fixed by the vehicle belt
3.6.3
non-integral universal child restraint system with backrest
i-Size booster seat
child restraint system applicable to all i-Size seats of vehicle, with backrest and retractable ISOFIX attachment (if any)
3.6.4
non-integral universal child restraint system without backrest
universal booster cushion
child restraint system mainly used for all i-Size seats and universal seating positions of vehicles, without backrest and with retractable ISOFIX attachment as required
3.7
child restraint system for specific vehicle
child restraint system for designated vehicles
3.7.1
integral ISOFIX child restraint system for specific vehicle
integral ISOFIX child restraint system using low anchorage of ISOFIX for specific vehicles
3.7.2
integral belted child restraint system for specific vehicle
integral child restraint system on a specific vehicle used to fix the child restraint system through the vehicle belt or combined with other connection means as required
3.7.3
non-integral child restraint system with backrest for specific vehicle
specific vehicle booster seat
non-integral child restraint system with backrest for specific vehicles
Note: This type includes the built-in child restraint system.
3.7.4
non-integral specific vehicle booster cushion
specific vehicle booster cushion
non-integral child restraint system without backrest for specific vehicles
Note: This type includes the built-in child restraint system.
3.8
size range
child’s body height range covered when the child restraint system is designed and certified
3.9
orientation
direction against the vehicle when the child restraint system is used
3.9.1
forward-facing
installation direction which is the same as the normal driving direction of the vehicle
3.9.2
rearward-facing
installation direction which is opposite to the normal driving direction of the vehicle
3.9.3
lateral-facing
installation direction which is vertical to the normal driving direction of the vehicle
3.10
special needs restraint
restraint system specially designed to meet the special needs of children with physical or mental disabilities
3.11
ISOFIX anchorages system
a set of system for fixing ISOFIX child restraint system, which consists of two ISOFIX low anchorages on the vehicle and ISOFIX attachment on the child restraint system
3.11.1
ISOFIX low anchorage
a 6-mm diameter horizontal rigid round rod extending from the vehicle structure or seat structure, which is a vehicle structural component used in conjunction with the ISOFIX attachment on the child restraint system
3.11.2
ISOFIX attachment
attachment extending from the ISOFIX child restraint system structure and used in conjunction with the ISOFIX low anchorage of the vehicle
3.12
anti-rotation device
device used in conjunction with ISOFIX anchorages system to prevent the child restraint system from rotating (around the Y axis of the vehicle) during vehicle impact
Note 1: Including ISOFIX top tether strap or support leg.
Note 2: The anti-rotation device of ISOFIX child restraint system for specific vehicles adopts top tether strap, support legs or other means to prevent rotation.
3.13
ISOFIX top tether strap
a webbing strap extending from the top of an ISOFIX child restraint system to the ISOFIX top tether anchorage, and which is equipped with an adjusting device, a tension relieving device, and an ISOFIX top tether connector
3.13.1
ISOFIX top tether anchorage
component fixed on the vehicle and connected with the ISOFIX top tether connector to transfer the restraining force to the vehicle
3.13.2
ISOFIX top tether connector
component of the child restraint system connected to the ISOFIX top tether strap anchorage of the vehicle
3.13.3
ISOFIX top tether hook
a typical ISOFIX top tether connector used to install the ISOFIX top tether strap to the ISOFIX top tether anchorage on the vehicle
3.14
tension relieving device
device for releasing the tension of ISOFIX top tether strap
3.15
support leg
an anti-rotation device that is permanently connected to the child restraint system and transfers the load between the vehicle body structure and the child restraint system
3.15.1
support-leg foot
one or more parts of the support leg that are in contact with the vehicle floor
Note: It is used to transfer the load applied by the support leg to the vehicle floor during front impact.
3.15.2
support-leg foot contact surface
surface of the support leg in direct contact with the vehicle floor
Note: It is used to disperse the load and transfer it to the vehicle body structure.
3.15.3
support-leg foot assessment volume
space volume used to check the adjustment range and size limit of the support-leg foot
Note: It corresponds to the assessment volume of support-leg foot specified in GB 14167.
3.15.4
support-leg dimension assessment volume
volume used to check the largest size of the support leg
Note: It corresponds to the i-Size support leg installation assessment volume specified in GB 14166.
3.16
child restraint fixture; CRF
device used to check whether the dimensions of a child restraint system are appropriate for the system to be installed in the ISOFIX position of a vehicle
3.17
vehicle seat fixture; VSF
device used to check the external dimensions of a child restraint system and the connection position of ISOFIX
3.17.1
ISOFIX vehicle seat fixture
a series of devices used to check the external dimensions of an integral universal belted child restraint system or an ISOFIX child restraint system, as well as the position of the ISOFIX attachment
Note: This includes fixtures for nine dimension categories, namely, ISO/F3, ISO/F2, ISO/F2X, ISO/R3, ISO/R2, ISO/R2X, ISO/R1, ISO/L1 and ISO/L2, whose specific shapes and dimensions are as specified in GB 14166.
3.17.2
i-Size booster seat fixture
device used to check the external dimensions of an i-Size booster seat or a universal booster cushion, as well as the position of the ISOFIX attachment
Note: This includes fixtures for two dimension categories, namely, ISO/B2 and ISO/B3, whose specific shapes and dimensions are as specified in GB 14166.
3.18
child harness belt
harness
a child-restraining strap assembly consisting of a lap strap, shoulder straps, and a crotch strap
3.19
Y-shaped belt
a child-restraining strap composed of several straps fastened between the child’s thighs and over both shoulders
......
4 General requirements
4.1 Installation positions and securing methods in the vehicle
4.1.1 Installation positions for different types of child restraint systems in the vehicle
4.1.1.1 The i-Size CRSs are mainly installed in the i-Size seating positions of the vehicle. For forward-facing i-Size CRSs equipped with an anti-rotation device in the form of a top tether strap, the instruction manual shall state that the child restraint system may be installed on all ISOFIX positions in the vehicle. For other i-Size CRSs, the instruction manual shall state that the child restraint system may be installed on the listed compatible ISOFIX positions.
4.1.1.2 The i-Size booster seats are primarily installed on i-Size seating positions in vehicles; if, during installation, there is no interference with the vehicle interior, the instruction manual shall state that the child restraint system may be installed on universal seating positions in the vehicle.
4.1.1.3 Universal booster cushions are permitted to be installed in all i-Size seating positions and universal seating positions in the vehicle.
4.1.1.4 ISOFIX child restraint systems for specific vehicles are permitted to be installed in all ISOFIX positions specified by the vehicle manufacturer, as well as in the luggage compartment area.
4.1.1.5 The specific vehicle booster seats or specific vehicle booster cushions shall be used in accordance with the instruction manual provided by the manufacturer.
4.1.2 Securing methods and requirements for integral CRS
4.1.2.1 The integral CRS shall be installed on the vehicle structure or the vehicle seat structure according to the child restraint system types listed in Table 1.
Table 1 Types and securing methods of integral CRSs
......
5 Performance requirements
5.1 Provisions for restraint system assembly
5.1.1 Corrosion resistance
5.1.1.1 A complete CRS, or the components susceptible to corrosion, shall be subjected to the corrosion test specified in 6.1.1.
5.1.1.2 After undergoing the corrosion test specified in 6.1.1, the CRS shall not have its original characteristics weakened or the above components shall not suffer from any corrosion upon visual inspection by the testing personnel.
5.1.2 Energy absorption property
5.1.2.1 For any CRS with backrest, when the area specified in Annex H is tested by the test method specified in Annex G, the maximum acceleration shall be less than 60g. This requirement also applies to any CRS with impact shield, especially the head impact area.
5.1.2.2 For a CRS with height-adjustable head support, if the height of the vehicle belt or child-restraining strap is directly controlled by the height-adjustable head support, then the parts not contacted by the head of the dummy in the areas specified in Annex H, such as the back of the head support, do not have to meet the requirements of 5.1.2.1.
5.1.3 Requirements for rotation test
A CRS shall be tested by the method specified in 6.1.2. The test dummy shall not fall out of the device throughout the test, and the head of the dummy shall not be displaced by more than 300mm from its original position in a direction perpendicular to the seat when the standard seat is in the inverted position. The measurement shall be performed after the load has been removed.
5.1.4 Requirements for temperature test
After being subjected to the temperature test as specified in 6.2.7, the buckle, retractor, adjusting device and lock-off device shall not show signs that may impair the original characteristics of the CRS upon visual inspection by the testing personnel.
5.1.5 Requirements for dynamic test
5.1.5.1 General requirements
5.1.5.1.1 The dynamic test shall be carried out on an unloaded CRS. The CRS shall be subjected to the dynamic test by the test method specified in 6.1.3 and following the test form specified in Table 3.
Foreword II
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
5 Performance requirements
6 Test methods
7 Test report
8 Identification
9 Instructional guidance document
10 Determination of the same type
11 Implementation of this standard
Annex A (Normative) Requirements for additional anchorages for rearward-facing belted CRSs for specific vehicle
Annex B (Normative) Standard safety-belts
Annex C (Normative) Height measuring device and measurement method for booster cushion
Annex D (Normative) Lower torso test
Annex E (Normative) Internal dimensions
Annex F (Normative) i-Size support-leg dimension assessment volume and support-leg foot assessment volume
Annex G (Normative) Energy absorption test method
Annex H (Normative) Method for determining the head impact area
Annex I (Normative) Description of the sled
Annex J (Normative) Determination of performance indicators for dynamic test
Annex K (Normative) Corrosion test
Annex L (Normative) Load applying devices
Annex M (Normative) Time function curves for braking deceleration or acceleration of the sled
Annex N (Normative) Front impact test procedure
Annex O (Normative) Rear impact test procedure
Annex P (Normative) Dummies and calibration procedures
Annex Q (Normative) Test method for buckle strength
Annex R (Normative) Micro-slip test
Annex S (Normative) Layout of dust test equipment
Annex T (Normative) Abrasion test
Annex U (Normative) Durability test method for adjusting devices
Bibliography
GB 27887-2024 Child restraint systems for power-driven vehicles English, Anglais, Englisch, Inglés, えいご
1 Scope
This document defines the terms and definitions of child restraint system (CRS) for power-driven vehicles, specifies the general requirements, performance requirements, test reports, identification and instructions, and describes the corresponding test methods.
This document is applicable to the following types of CRS suitable for installation on power-driven vehicles:
a) Integral universal ISOFIX child restraint system (i-Size CRS);
b) Integral ISOFIX child restraint system for specific vehicle;
c) Integral universal belted child restraint system;
d) Integral universal belted child restraint system for specific vehicle;
e) Non-integral universal child restraint system with backrest (i-Size booster seat);
f) Non-integral child restraint system with backrest for specific vehicle (specific vehicle booster seats);
g) Non-integral universal child restraint system without backrest (universal booster cushion);
h) Non-integral child restraint system without backrest for specific vehicle (specific vehicle booster cushion).
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 231.1 Metallic materials - Brinell hardness test - Part 1: Test method
GB/T 3505 Geometrical product specifications (GPS) - Surface texture: Profile method - Terms, definitions and surface texture parameters
GB/T 4780 Terms for motor vehicle body
GB 6675.3 Safety of toys - Part 3: Flammability
GB 6675.4 Safety of toys - Part 4: Migration of certain elements
GB 8410 Flammability of automotive interior materials
GB/T 8427 Textiles - Tests for color fastness - Color fastness to artificial light: Xenon arc fading lamp test
GB 14166 Safety-belts and restraint systems for occupants of power-driven vehicles
GB 14167 Safety-belt anchorages and restraint systems anchorages for occupants of power-driven vehicles
ISO 2575:2010 Road vehicles - Symbols for controls, indicators and tell-tales
ISO 6487:2015 Road vehicles - Measurement techniques in impact tests - Instrumentation
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 4780, GB 14166, GB 14167 and the following apply.
3.1
child restraint system; CRS
child seat
device restraining the movement of the child's body to reduce the injury to the wearer in the case of collision accident or sudden deceleration of the vehicle, keeping the child occupant in a sitting or sleeping position
3.2
integral class
child restraint system category in which a child is only restrained by the components of the CRS, rather than directly being restrained by the vehicle belt
Note: The components of CRS include child harness belt and impact shield.
3.3
non-integral class
child restraint system category in which a child is restrained in the child restraint system directly by the vehicle belt
3.4
rigid fixture for the child restraint system
ISOFIX
international universal child restraint system that connects the CRS with the vehicle through two lower anchorages on the vehicle, two corresponding rigid connecting devices on the child restraint system, and a device that restricts the child restraint system from rotation
3.5
built-in child restraint system
child restraint system that is a part of a vehicle or a vehicle seat and is fixed to the vehicle
3.6
universal child restraint systems
product type applicable to child restraint systems on all i-Size seats or all universal seating positions
3.6.1
integral universal ISOFIX child restraint system
i-Size CRS
ISOFIX child restraint system which is suitable for all i-Size seats of the vehicle, and restricts the child restraint system from rotating through ISOFIX top tether straps or support legs
3.6.2
integral universal belted child restraint system
child restraint system which is suitable for all universal seating positions of the vehicle and is only fixed by the vehicle belt
3.6.3
non-integral universal child restraint system with backrest
i-Size booster seat
child restraint system applicable to all i-Size seats of vehicle, with backrest and retractable ISOFIX attachment (if any)
3.6.4
non-integral universal child restraint system without backrest
universal booster cushion
child restraint system mainly used for all i-Size seats and universal seating positions of vehicles, without backrest and with retractable ISOFIX attachment as required
3.7
child restraint system for specific vehicle
child restraint system for designated vehicles
3.7.1
integral ISOFIX child restraint system for specific vehicle
integral ISOFIX child restraint system using low anchorage of ISOFIX for specific vehicles
3.7.2
integral belted child restraint system for specific vehicle
integral child restraint system on a specific vehicle used to fix the child restraint system through the vehicle belt or combined with other connection means as required
3.7.3
non-integral child restraint system with backrest for specific vehicle
specific vehicle booster seat
non-integral child restraint system with backrest for specific vehicles
Note: This type includes the built-in child restraint system.
3.7.4
non-integral specific vehicle booster cushion
specific vehicle booster cushion
non-integral child restraint system without backrest for specific vehicles
Note: This type includes the built-in child restraint system.
3.8
size range
child’s body height range covered when the child restraint system is designed and certified
3.9
orientation
direction against the vehicle when the child restraint system is used
3.9.1
forward-facing
installation direction which is the same as the normal driving direction of the vehicle
3.9.2
rearward-facing
installation direction which is opposite to the normal driving direction of the vehicle
3.9.3
lateral-facing
installation direction which is vertical to the normal driving direction of the vehicle
3.10
special needs restraint
restraint system specially designed to meet the special needs of children with physical or mental disabilities
3.11
ISOFIX anchorages system
a set of system for fixing ISOFIX child restraint system, which consists of two ISOFIX low anchorages on the vehicle and ISOFIX attachment on the child restraint system
3.11.1
ISOFIX low anchorage
a 6-mm diameter horizontal rigid round rod extending from the vehicle structure or seat structure, which is a vehicle structural component used in conjunction with the ISOFIX attachment on the child restraint system
3.11.2
ISOFIX attachment
attachment extending from the ISOFIX child restraint system structure and used in conjunction with the ISOFIX low anchorage of the vehicle
3.12
anti-rotation device
device used in conjunction with ISOFIX anchorages system to prevent the child restraint system from rotating (around the Y axis of the vehicle) during vehicle impact
Note 1: Including ISOFIX top tether strap or support leg.
Note 2: The anti-rotation device of ISOFIX child restraint system for specific vehicles adopts top tether strap, support legs or other means to prevent rotation.
3.13
ISOFIX top tether strap
a webbing strap extending from the top of an ISOFIX child restraint system to the ISOFIX top tether anchorage, and which is equipped with an adjusting device, a tension relieving device, and an ISOFIX top tether connector
3.13.1
ISOFIX top tether anchorage
component fixed on the vehicle and connected with the ISOFIX top tether connector to transfer the restraining force to the vehicle
3.13.2
ISOFIX top tether connector
component of the child restraint system connected to the ISOFIX top tether strap anchorage of the vehicle
3.13.3
ISOFIX top tether hook
a typical ISOFIX top tether connector used to install the ISOFIX top tether strap to the ISOFIX top tether anchorage on the vehicle
3.14
tension relieving device
device for releasing the tension of ISOFIX top tether strap
3.15
support leg
an anti-rotation device that is permanently connected to the child restraint system and transfers the load between the vehicle body structure and the child restraint system
3.15.1
support-leg foot
one or more parts of the support leg that are in contact with the vehicle floor
Note: It is used to transfer the load applied by the support leg to the vehicle floor during front impact.
3.15.2
support-leg foot contact surface
surface of the support leg in direct contact with the vehicle floor
Note: It is used to disperse the load and transfer it to the vehicle body structure.
3.15.3
support-leg foot assessment volume
space volume used to check the adjustment range and size limit of the support-leg foot
Note: It corresponds to the assessment volume of support-leg foot specified in GB 14167.
3.15.4
support-leg dimension assessment volume
volume used to check the largest size of the support leg
Note: It corresponds to the i-Size support leg installation assessment volume specified in GB 14166.
3.16
child restraint fixture; CRF
device used to check whether the dimensions of a child restraint system are appropriate for the system to be installed in the ISOFIX position of a vehicle
3.17
vehicle seat fixture; VSF
device used to check the external dimensions of a child restraint system and the connection position of ISOFIX
3.17.1
ISOFIX vehicle seat fixture
a series of devices used to check the external dimensions of an integral universal belted child restraint system or an ISOFIX child restraint system, as well as the position of the ISOFIX attachment
Note: This includes fixtures for nine dimension categories, namely, ISO/F3, ISO/F2, ISO/F2X, ISO/R3, ISO/R2, ISO/R2X, ISO/R1, ISO/L1 and ISO/L2, whose specific shapes and dimensions are as specified in GB 14166.
3.17.2
i-Size booster seat fixture
device used to check the external dimensions of an i-Size booster seat or a universal booster cushion, as well as the position of the ISOFIX attachment
Note: This includes fixtures for two dimension categories, namely, ISO/B2 and ISO/B3, whose specific shapes and dimensions are as specified in GB 14166.
3.18
child harness belt
harness
a child-restraining strap assembly consisting of a lap strap, shoulder straps, and a crotch strap
3.19
Y-shaped belt
a child-restraining strap composed of several straps fastened between the child’s thighs and over both shoulders
......
4 General requirements
4.1 Installation positions and securing methods in the vehicle
4.1.1 Installation positions for different types of child restraint systems in the vehicle
4.1.1.1 The i-Size CRSs are mainly installed in the i-Size seating positions of the vehicle. For forward-facing i-Size CRSs equipped with an anti-rotation device in the form of a top tether strap, the instruction manual shall state that the child restraint system may be installed on all ISOFIX positions in the vehicle. For other i-Size CRSs, the instruction manual shall state that the child restraint system may be installed on the listed compatible ISOFIX positions.
4.1.1.2 The i-Size booster seats are primarily installed on i-Size seating positions in vehicles; if, during installation, there is no interference with the vehicle interior, the instruction manual shall state that the child restraint system may be installed on universal seating positions in the vehicle.
4.1.1.3 Universal booster cushions are permitted to be installed in all i-Size seating positions and universal seating positions in the vehicle.
4.1.1.4 ISOFIX child restraint systems for specific vehicles are permitted to be installed in all ISOFIX positions specified by the vehicle manufacturer, as well as in the luggage compartment area.
4.1.1.5 The specific vehicle booster seats or specific vehicle booster cushions shall be used in accordance with the instruction manual provided by the manufacturer.
4.1.2 Securing methods and requirements for integral CRS
4.1.2.1 The integral CRS shall be installed on the vehicle structure or the vehicle seat structure according to the child restraint system types listed in Table 1.
Table 1 Types and securing methods of integral CRSs
......
5 Performance requirements
5.1 Provisions for restraint system assembly
5.1.1 Corrosion resistance
5.1.1.1 A complete CRS, or the components susceptible to corrosion, shall be subjected to the corrosion test specified in 6.1.1.
5.1.1.2 After undergoing the corrosion test specified in 6.1.1, the CRS shall not have its original characteristics weakened or the above components shall not suffer from any corrosion upon visual inspection by the testing personnel.
5.1.2 Energy absorption property
5.1.2.1 For any CRS with backrest, when the area specified in Annex H is tested by the test method specified in Annex G, the maximum acceleration shall be less than 60g. This requirement also applies to any CRS with impact shield, especially the head impact area.
5.1.2.2 For a CRS with height-adjustable head support, if the height of the vehicle belt or child-restraining strap is directly controlled by the height-adjustable head support, then the parts not contacted by the head of the dummy in the areas specified in Annex H, such as the back of the head support, do not have to meet the requirements of 5.1.2.1.
5.1.3 Requirements for rotation test
A CRS shall be tested by the method specified in 6.1.2. The test dummy shall not fall out of the device throughout the test, and the head of the dummy shall not be displaced by more than 300mm from its original position in a direction perpendicular to the seat when the standard seat is in the inverted position. The measurement shall be performed after the load has been removed.
5.1.4 Requirements for temperature test
After being subjected to the temperature test as specified in 6.2.7, the buckle, retractor, adjusting device and lock-off device shall not show signs that may impair the original characteristics of the CRS upon visual inspection by the testing personnel.
5.1.5 Requirements for dynamic test
5.1.5.1 General requirements
5.1.5.1.1 The dynamic test shall be carried out on an unloaded CRS. The CRS shall be subjected to the dynamic test by the test method specified in 6.1.3 and following the test form specified in Table 3.
Contents of GB 27887-2024
Foreword II
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
5 Performance requirements
6 Test methods
7 Test report
8 Identification
9 Instructional guidance document
10 Determination of the same type
11 Implementation of this standard
Annex A (Normative) Requirements for additional anchorages for rearward-facing belted CRSs for specific vehicle
Annex B (Normative) Standard safety-belts
Annex C (Normative) Height measuring device and measurement method for booster cushion
Annex D (Normative) Lower torso test
Annex E (Normative) Internal dimensions
Annex F (Normative) i-Size support-leg dimension assessment volume and support-leg foot assessment volume
Annex G (Normative) Energy absorption test method
Annex H (Normative) Method for determining the head impact area
Annex I (Normative) Description of the sled
Annex J (Normative) Determination of performance indicators for dynamic test
Annex K (Normative) Corrosion test
Annex L (Normative) Load applying devices
Annex M (Normative) Time function curves for braking deceleration or acceleration of the sled
Annex N (Normative) Front impact test procedure
Annex O (Normative) Rear impact test procedure
Annex P (Normative) Dummies and calibration procedures
Annex Q (Normative) Test method for buckle strength
Annex R (Normative) Micro-slip test
Annex S (Normative) Layout of dust test equipment
Annex T (Normative) Abrasion test
Annex U (Normative) Durability test method for adjusting devices
Bibliography
