GB 27887:2024 Child restraint systems for power-driven vehicles English
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 backback for specific vehicle (booster seat for specific vehicles);
g) Non-integral universal child restraint system without backrest (universal booster cushion);
h) Non-integral child restraint system without backback for specific vehicle (booster cushion for specific vehicles).
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
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 seat belt
Note: The components of CRS include children's full-strap restraint belt and collision protection device.
3.3
non-integral class
child restraint system category in which a child is restrained in the child restraint system directly by safety-belts
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 overturning
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 seats
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 turning over 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 universial seats of the vehicle and is only fixed by the vehicle seat 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 connection device (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 seats of vehicles, without backrest and with retractable ISOFIX connection devices 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 seat belt or combined with other connection means as required
3.7.3
non-integral child restraint system with backback 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
height range of children 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 connecting devices 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 connecting device 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 anchorage system to prevent the child restraint system from rotating (around the Y axis of the vehicle) during vehicle collision
Note 1: Including ISOFIX top tether strap or support leg.
Note 2: The anti-overturning device of ISOFIX child restraint system for specific vehicles adopts top tether strap, support legs or other means to prevent overturning.
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 adjustment 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 binding 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-overturning 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: Its function is to transfer the load applied by the support leg to the vehicle floor during front collision.
3.15.2
support-leg foot contact surface
surface of the support leg in direct contact with the vehicle floor
Note: Its function is to disperse the load and transfer it to the body structure.
3.15.3
support-leg foot assessment volume
space volume checking 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 checking the largest size of the support leg
