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QC/T 1106-2019

Chinese Standard: 'QC/T 1106-2019'
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Standard ID QC/T 1106-2019 (QC/T1106-2019)
Description (Translated English) Retraining barrier for passenger seat
Sector / Industry Automobile & Vehicle Industry Standard (Recommended)
Classification of Chinese Standard T42
Word Count Estimation 11,184
Date of Issue 2019-08-02
Date of Implementation 2020-01-01
Regulation (derived from) Natural Resources Department Announcement No. 7 of 2019

QC/T 1106-2019
Retraining barrier for passenger seat
2019-8-27 released
2020-1-1 implementation
Issued by the Ministry of Industry and Information Technology of the People's Republic of China
People's Republic of China Automotive Industry Standard
ICS 43.080.20
T 42
Bus seat restraint partition
Table of contents
1 Scope
2 Normative references
3 Terms and definitions
4 requirements
5 Test method
6 Inspection rules
7 Packaging, transportation and storage
Appendix A (Normative Appendix) Measurement of trolley and dummy
Appendix B (Normative Appendix) Determination of Allowable Injury Index
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed and managed by the National Automotive Standardization Technical Committee (SAC/TC 114).
Drafting organizations of this standard. Jiangsu Transportation Research Institute Co., Ltd., Jiangsu Xianchang Power Components Co., Ltd., Chongqing Automobile
Vehicle Inspection and Research Institute Co., Ltd., Jiangsu Changning Electronics Co., Ltd., Zhengzhou Yutong Bus Co., Ltd., China Automotive Engineering Research
Institute Co., Ltd., Xiamen Golden Dragon United Automotive Industry Co., Ltd., Golden Dragon United Automotive Industry (Suzhou) Co., Ltd., SAIC Motor
Group Co., Ltd. Commercial Vehicle Technology Center, China FAW Co., Ltd. Technology Center
The main drafters of this standard. Jin Mingxin, Li Deyun, Tan Zhenyuan, Xu Hailan, Zhao Weili, Wan Huowang, Yu Tian, Wang Si,
Zhu Baolin, Li Dezhong, Wang Hui, Liu Ben, Hu Junyu
This standard is issued for the first time.
Bus seat restraint partition
1 Scope
This standard specifies the terms and definitions, requirements, test methods, inspection rules and regulations of restraint partitions installed in front of passenger car seats.
Packaging, transportation and storage.
This standard is applicable to the restraining partitions used in M2 and M3 class B and class II and class III passenger cars.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies
In this document. For undated references, the latest version (including all amendments) applies to this document.
GB/T 2406.2 Determination of combustion behavior of plastics by oxygen index method Part 2.Room temperature test
GB/T 5454 Textile Flammability Test Oxygen Index Method
GB 8410 Combustion characteristics of automotive interior materials
GB/T 8627 Test method for flammability of building materials
GB 11552-2009 Internal protrusions of passenger cars
GB 13057 Strength of passenger car seats and their vehicle fixings
GB 14166 Seat belts, restraint systems, and child restraint systems for motor vehicle occupants ISO FIX child restraint systems
GB 14167 Car seat belt installation fixed point, ISO FIX fixed point system and upper pull belt fixed point
GB/T 14486 Dimensional tolerance of plastic molded parts
GB 32086 Technical requirements and test methods for vertical combustion characteristics of specific types of automotive interior materials
HG/T.2006 thermosetting powder coating
QC/T 484 Automotive paint coating
QC/T 625 coating and chemical treatment layer for automobile
ISO 6487 Road Vehicle Crash Test Measurement Technology Testing Instrument
3 Terms and definitions
The following terms and definitions defined in GB 13057 apply to this document.
Restraining barrier
A device installed in front of the passenger car seat to restrain and protect the occupants behind it during a collision accident or emergency braking.
Including handrails and guardrails with this function.
Auxiliary seat
The seat with dummy installed behind the restraint partition on the trolley represents the seat behind the restraint partition used on the vehicle.
A part of the vehicle floor or body used to fix the restraint partition.
Attachment fittings
Parts such as bolts used to install the restraining partition to the vehicle fixing parts.
4 requirements
4.1 General requirements
4.1.1 The restraining partition shall comply with the provisions of this standard and be manufactured in accordance with the drawings and technical documents approved by the prescribed procedures.
4.1.2 The reference height between the upper edge of the restraining partition and the floor of the passenger's feet shall not be less than 800 mm.
4.1.3 For the restraint partition installed at the rear of the driving area, its width shall extend from the side wall of the vehicle body to the inside of the vehicle to beyond the inner passenger seat
The longitudinal center axis of the vehicle should be at least 100 mm, and should reach at least the innermost point of the driver’s seat, and should prevent the immediate
Passenger items behind the driving area roll into the driving area from under the restraint partition (if a rigid ball with a diameter of 50 mm cannot roll in,
That can be considered to meet this requirement).
4.1.4 For the restraint partition installed in the passenger step area, its width shall extend from the inner wall of the vehicle body to the inside of the vehicle to beyond the side seat of the passenger passage
Position the longitudinal centerline at least 100 mm, or extend to the edge of the innermost step (whichever is smaller).
4.2 Requirements for parts.
4.2.1 The upper beam constraining the head-shaped impact area of the diaphragm should be coated with soft material, and the Shore (A) hardness should not be greater than 65.
4.2.2 The dimensional tolerances of the plastic parts of the restraint partition shall meet the relevant regulations of GB/T 14486.
4.2.3 The protective surface of the restraining partition should be firm, full, and tidy, and there should be no defects such as discoloration, stains, damage, and scratches.
4.2.4 The exposed metal structural parts of the restraining partition shall be treated with surface anti-rust treatment, and the paint coating shall comply with the relevant regulations of QC/T 484
The electroplating layer and chemical treatment layer should meet the relevant regulations of QC/T 625, and the thermosetting powder coating should meet the relevant regulations of HG/T.2006.
4.3 Assembly requirements
4.3.1 After assembly of the restraint partition frame and plastic parts, and the restraint partition protection surface and plastic parts, they should be firmly connected and reliable in use.
4.3.2 The outer surface of the restraining partition above 400 mm from the datum plane should not have sharp projections (using straight
The head shape with a diameter of 165 mm contacts the above part, and its radius of curvature should not be less than 5 mm).
4.4 Combustion characteristics
4.5 Strength requirements
4.5.1 Dynamic test strength requirements of restraint diaphragms The occupants can be properly restrained by the front restraint partitions and/or safety belts.
The forward displacement of any part of the dummy's torso and head shall not exceed the horizontal vertical plane 1.6 m in front of the auxiliary seat R point. The crew was not seriously injured. The allowable injury index determined according to Appendix B shall meet the following requirements.
a) Head allowable index (HIC) is less than 500;
b) Chest tolerance index (ThAC) is less than 30 g (except for those whose duration is less than 3 ms) (g=9.81 m/s²);
c) Leg Allowable Index (FAC) is less than 10 kN; when the duration is> 20 ms, it should be less than 8 kN. The restraint partition and its fixing parts are sufficiently strong and should meet the following requirements.
a) Constraint diaphragm connectors or accessories shall not be completely separated during the test;
b) Any fixed point of the restraining partition shall not be completely separated from the fixed part;
c) The restraint partition should not have dangerous edges or corners that may cause injury to the occupants.
4.5.2 Strength requirements of restraint diaphragm fixing parts The strength of the fixing members of the restraining bulkhead shall be able to withstand the provisions of 4.5.1 (the restraining bulkhead shall be installed on the test platform representing the body structure
(Upper time) specified test load. During the test, permanent deformation, including partial fracture, of the fixing member of the restraining diaphragm or its surrounding area is allowed. When the combination of a type of restraint diaphragm and a type of fixing can meet the requirements of clause 4.5.1, the type of restraint
After the baffle and other types of fixing parts are combined, only different types of fixing parts can be tested according to the requirements of 5.3.
5 Test method
5.1 Dynamic strength test
5.1.1 Preparation of test restraint partition and auxiliary seat The test restraint bulkhead and auxiliary seat shall be installed on the test platform representing the car body, or the rigid test platform (the vehicle is not assessed
When fixing the strength of the fixing parts), the auxiliary seat should be placed directly behind the test restraint partition, and the installation methods of the two should be consistent with their state on the vehicle. The test distance between the restraint partition and the auxiliary seat is 750 mm, and the measurement method is at a height of 620 mm above the reference plane
In the horizontal position, measure the distance from the front convex part of the rear seat back to the rear convex part of the front restraining partition. The fixing parts of the test restraint partition and auxiliary seat on the test platform shall be the same as the vehicle fixing parts on which the restraint partition is installed.
Or have the same characteristics. The decorative parts and accessories of the test restraint partition and auxiliary seat shall be complete, and the accessories on the restraint partition shall be in the normal use position. If the auxiliary seat can be adjusted horizontally, it should be adjusted to the widest position. If the backrest of the auxiliary seat is adjustable, it should be adjusted to the normal use position recommended by the manufacturer. The safety belt installed on the auxiliary seat shall meet the requirements of GB 14166.
5.1.2 Test 1 Test platform
The test platform should be installed on the simulated pulley. Dummy Use mixed type III 50th percentile mannequin or TNO 10 type mannequin. The dummy should be placed on the auxiliary seat without restriction, so that its symmetry plane is consistent with the symmetry plane of the seating position. The hand of the dummy should be placed on the thigh (except TNO 10), the elbow should touch the backrest, and the calf should be in the most extended position.
If possible, the lower legs should be parallel to each other, with the heel touching the floor. Each dummy used shall be placed on the seat according to the following procedures.
a) Place the dummy on the seat as required;
b) Place a 76 mm×76 mm rigid plane as low as possible in front of the dummy's torso;
c) Press this plane against the torso of the dummy with a horizontal force of 250 N~350 N, adjust the position of the dummy and keep the center plane of the head flat
Travel on the plane of symmetry of the vehicle;
d) Remove the rigid plane carefully;
e) Move the dummy on the seat forward and repeat the above installation steps;
f) If necessary, the position of the lower limbs should be adjusted;
g) In the event of a collision, the equipment installed should have no effect on the movement of the dummy;
h) Before the test, the temperature and humidity of the measuring instrument system should be stable and kept within the range of 19 ℃~26 ℃, 10%~70%. Collision simulation The collision speed of the simulated tackle shall be 30 km/h~32 km/h. The deceleration or acceleration-time curve of the simulated pulley shall be kept within the limited interval shown in Figure 1. The average deceleration or acceleration should be between 6.5 g and 8.5 g. The damage value of the dummy is not measured during the test.
5.1.3 Test 2 Repeat the test specified in 5.1.2 on the hybrid III 50th percentile dummy wearing a seat belt, and measure the damage value. The measurement of the trolley and dummy shall be carried out in accordance with the provisions of Appendix A, and the allowable injury index shall be determined in accordance with Appendix B. If one of the following conditions is met, test 2 can be omitted.
a) Three-point safety belts and fixed points are installed on the rear seats adjacent to the restraint partition, and they are in full compliance with the requirements of GB 14167;
b) The impact area of the constrained diaphragm head shall be tested for energy absorption characteristics in accordance with 5.3.The deceleration acting on the impact head exceeds
The duration of 80g does not exceed 3 ms, and the maximum deceleration does not exceed 120 g.
5.2 Energy absorption characteristic test
5.2.1 Determination of head-shaped impact area
The head impact area on the restraining partition is the space between two vertical vertical planes symmetrical to the H point of the adjacent seats and a distance of 400 mm.
And according to the description in Appendix C of GB 11552-2009, it is the restraining partition that the head-type device touches from the vertical rotation to the horizontal position.
The head-type device should be placed in accordance with GB 11552-2009 Appendix A. The distance from the center to the centerline of the rotating shaft can be
Continuous adjustment between 736 mm and 840 mm.
5.2.2 Impact speed and direction
In the head-shaped impact zone, any contact point on the restraining diaphragm is impacted by a velocity of 24.1 km/h ~ 25.3 km/h, and it should be able to fully
It meets the energy absorption characteristic requirements specified in Section The direction of impact coincides with the surface normal of the contact point determined in clause 5.2.1 (see Figure 2).
5.2.3 Head type model During the head-shaped impact test, the head-shaped model used to measure the deceleration is composed of a hemisphere or spherical group with a radius of 82.5 mm.
The equivalent mass of the finished hard surface is 6.8 kg, and the surface roughness shall not be greater than 1.6μm. The head model is equipped with two acceleration sensors whose axial position is consistent with its movement direction. The deceleration value should take two
The average value of the accelerometer readings. The head model is guided by the collision device, and its moving direction is not affected by the various test surfaces specified in this standard.
5.3 Strength test of restraint diaphragm fixing parts
5.3.1 Test equipment A rigid structural member that can represent the restraint partition on the vehicle shall be used with the connecting parts provided by the manufacturer (including the restraint partition).
Panel side wall fixings and bolts, etc.) are installed on the fixings under test. If the restraint partitions have different structural dimensions except the distance between the fixed points on the floor and the height of the side fixed points, other structural dimensions are completely the same.
At the same time, the model of the restraint diaphragm is changed, and they are all installed on the fixing parts of the same structure, only for the most unfavorable conditions (the restraint
The model with the shortest outrigger distance and the lowest side wall fixed point height) shall be tested in accordance with the requirements of 5.3.
5.3.2 Test procedure F force application
a) At 750 mm above the datum plane, the force F acts on different fixed points through the rigid structure specified in
The perpendicular to the geometric center of the polygon composed of vertices;
b) F force is horizontal, pointing to the front of the vehicle;
c) The duration of force application should not be less than 0.2 s.
6 Inspection rules
6.1 Factory inspection
6.1.1 The restraint partition shall be inspected by the manufacturer's quality inspection department and the product certificate shall be issued before leaving the factory.
6.1.2 The factory inspection items are the items specified in 4.2, 4.3.1, and 4.3.2, the number of samples is 3% of each batch of products, and the minimum is 3 pieces.
6.2 Type inspection
6.2.1 In one of the following situations, the product should be type tested.
a) The finalization appraisal of the production of new products or the transfer of old products to factory production;
b) After formal production, if there are major changes in structure, materials, and processes, which may affect product performance;
c) 2 years of normal production (or negotiated by both parties);
d) When production is resumed after the product has been stopped for 1 year;
e) When the quality supervision agency requests for type inspection.
6.2.2 Type inspection items shall be those specified in 4.1~4.5.At least 2 items shall be inspected and the sampling base shall not be less than 5 items.
6.2.3 During the type inspection, among the specified inspection items, when any one of the items specified in 4.4 and 4.5 fails to pass the inspection,
It is judged as unqualified; if any of the other items is unqualified, the sampling can be doubled and the unqualified item can be re-inspected.
If it is still unqualified, it is judged as unqualified.
7 Packaging, transportation and storage
7.1 Packaging
The restraint partition shall have protective packaging.
7.2 Transportation
When transporting the restraint partitions, load and unload with care to avoid collision and damage, and prevent sun and rain.
7.3 Storage
Restraint partitions should be stored in a dry, ventilated, non-corrosive gas and fireproof warehouse, and should not be heavily pressed to avoid deformation.
Appendix A
(Normative appendix)
Measurement of trolley and dummy
A.1 For the detection of trolleys and dummy, the measurement system should comply with ISO 6487.
A.2 Dynamic test
A.2.1 Measurements made on the trolley
The deceleration/acceleration characteristics of the trolley should be determined based on the readings of the longitudinal acceleration sensor on the rigid structure of the trolley.
The measurement system uses the CFC 60 data channel.
A.2.2 Measurements made on the dummy
Different parameter measurements should be recorded through independent data channels of the following CFC (frequency level of the channel).
A.2.2.1 Measurement of dummy head
The resultant acceleration of the head centroid (γr) is measured by CFC600.
A.2.2.2 Measurement of dummy chest
The composite acceleration of the chest centroid should be measured by CFC180.
A.2.2.3 Measurement of dummy legs
The axial pressure should be measured by CFC 600.
Related standard: QC/T 1030-2016    QC/T 1031-2016
Related PDF sample: QC/T 1048-2016    QC/T 476-2007