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QC/T 1106-2019

Chinese Standard: 'QC/T 1106-2019'
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QC/T 1106-2019EnglishRFQ ASK Days<=3 Retraining barrier for passenger seat Valid 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
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
(Bus seat restraint)
Published on August 27,.2019
2020-1-1 implementation
Published 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 bulkhead
Retraining barrier for passenger seat
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) Measurements on Trolleys 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).
This standard was drafted. Jiangsu Transportation Science Research Institute Co., Ltd., Jiangsu Xianchang Power Components Co., Ltd., Chongqing Automobile
Vehicle Testing Research Institute Co., Ltd., Jiangsu Changning Electronics Co., Ltd., Zhengzhou Yutong Bus Co., Ltd., China Automotive Engineering Research
Institute Co., Ltd., Xiamen Jinlong United Automobile Industry Co., Ltd., Jinlong United Automobile Industry (Suzhou) Co., Ltd., Shanghai Automotive
Group Commercial Vehicle Technology Center, China FAW Corporation Technology Center
The main drafters of this standard. Jin Mingxin, Li Deyun, Tan Qin, Xu Hailan, Zhao Weili, Wan Huowang, Yu Tian, Wang Yan,
Zhu Baolin, Li Dezhong, Wang Hui, Liu Ye, Hu Junyu
This standard is issued for the first time.
Bus seat restraint bulkhead
1 Scope
This standard specifies the terms and definitions, requirements, test methods, inspection rules and
Packaging, transportation and storage.
This standard applies to M2, M3 class B and II, III passenger car restraint partitions.
2 Normative references
The following documents are essential for the application of this document. For dated references, 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 by oxygen index method for plastics. Part 2. Room temperature test
GB/T 5454 Oxygen index method for textile combustion performance test
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 vehicle fixings
GB 14166 Seat belts, restraint systems, child restraint systems for motor vehicle occupants, ISO FIX child restraint systems
GB 14167 Car seat belt fixing points, ISO FIX fixing point system and pull-up belt fixing points
GB/T 14486 Dimensional tolerances of plastic molded parts
GB 32086 Technical requirements and test methods for vertical combustion characteristics of certain types of automotive interior materials
HG/T.2006 thermosetting powder coating
QC/T 484 automotive paint coating
QC/T 625 Automotive coating and chemical treatment layer
ISO 6487 road vehicle crash test measurement technology detection instrument
3 terms and definitions
The terms and definitions defined in GB 13057 and the following apply to this document.
Restraining barrier
A device installed in front of a passenger car seat to restrain and protect occupants behind it in the event of a collision or emergency braking,
Includes handrails and guardrails with this function.
Auxiliary seat
A dummy seat is installed behind the restraint partition on the trolley, which represents the seat used behind the restraint partition on the vehicle.
A part of a vehicle floor or body used to securely restrain a bulkhead.
Attachment fittings
Bolts and other parts used to mount restraint bulkheads to vehicle fixtures.
4 Requirements
4.1 General requirements
4.1.1 Constrained partitions shall comply with the provisions of this standard and shall be manufactured in accordance with the drawings and technical documents approved by prescribed procedures.
4.1.2 The reference height of the upper edge of the restraint partition from the floor of the passenger's feet shall not be less than 800 mm.
4.1.3 For restraint bulkheads installed at the rear of the driving zone, the width should extend from the side of the body to the interior of the vehicle beyond the passenger seat on the inside
The longitudinal center axis of the motor should be at least 100 mm and should reach at least the innermost point of the driver's seat.
Passenger items behind the driving area roll into the driving area from under the restraint partition (if a 50 mm diameter rigid ball cannot be rolled in,
Can be considered to meet this requirement).
4.1.4 For restraint bulkheads installed in the passenger step area, the width shall extend from the inner wall of the vehicle body to the interior of the vehicle beyond the side seats of the passenger passage
The longitudinal centerline must be at least 100 mm, or extend to the edge of the innermost step (whichever is smaller).
4.2 Parts requirements.
4.2.1 The upper beam that restrains the head impact zone of the partition should be coated with soft material, and the Shore (A) hardness is not greater than 65.
4.2.2 The dimensional tolerance of the constrained bulkhead plastic parts shall meet the relevant regulations of GB/T 14486.
4.2.3 The surface of restraining partitions shall be straight, full, and tidy, and shall be free from defects such as discoloration, stains, damage, and scratches.
4.2.4 The exposed metal structure of the constrained partition shall be antirusted on the surface, and its paint coating shall comply with the relevant regulations of QC/T 484.
It is stipulated that the electroplated layer and the chemical treatment layer shall comply with the relevant regulations of QC/T 625, and the thermosetting powder coating shall comply with the relevant regulations of HG/T.2006.
4.3 Assembly requirements
4.3.1 The frame of the restraint partition and the plastic parts, and the surface of the restraint partition and the plastic parts shall be connected firmly and reliably after assembly.
4.3.2 The outer surface of the restraint partition board located above 400 mm of the reference plane shall not have sharp protrusions that endanger the safety of passengers (use straight
A 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
The combustion characteristics of the constrained bulkhead shall meet the requirements of GB XXXX "Combustion characteristics of passenger car interior materials".
4.5 Strength requirements
4.5.1 Strength requirements for dynamic test of restrained partitions The occupant can be properly restrained by the front restraint bulkhead and/or seat belt.
The forward displacement of any part of the dummy's torso and head should not exceed the transverse vertical plane located 1.6 m before the R point of the auxiliary seat. The occupants were not seriously injured. The allowable injury indicators determined in accordance with Appendix B shall meet the following requirements.
a) Head allowable index (HIC) is less than 500;
b) Chest allowable index (ThAC) is less than 30 g (except for duration less than 3 ms) (g = 9.81 m/s²);
c) The 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 fixings are sufficiently strong and shall meet the following requirements.
a) Constraint bulkhead connections or accessories shall not be completely detached during the test;
b) any fixing point of the restraint partition shall not be completely separated from the fixing member;
c) The restraint partition should not have dangerous corners or sharp corners that may cause injury to the occupants.
4.5.2 Strength requirements for restrained partition fixtures The strength of the restraint of the restraint bulkhead shall be able to withstand the provisions of 4.5.1 (the restraint bulkhead is installed on the test platform representing the body structure
The test load specified above). During the test, the fixed parts of the restraint partition plate or its surrounding area are allowed to undergo permanent deformation, including partial fracture. When the combination of a type constraint partition and a type fixing can meet the requirements of 4.5.1, the type constraint
After the partition plate and other types of fixing members are combined, only different types of fixing members can be tested in accordance with the requirements of 5.3.
5 Test method
5.1 Dynamic strength test
5.1.1 Preparation of test restraint bulkheads and auxiliary seats The test restraint bulkhead and auxiliary seat shall be installed on the test platform representing the vehicle body, or on a rigid test platform (does not evaluate the vehicle)
When the strength of the fasteners), the auxiliary seat should be placed directly behind the test restraint partition. The test distance between the restrained bulkhead and the auxiliary seat is 750 mm, and the measurement method is at a height of 620 mm above the reference plane
In a horizontal position, measure the distance from the front raised portion of the rear seat back to the rear raised portion of the front restraint bulkhead. The test restraint bulkheads and auxiliary seat fixtures on the test platform shall be the same as those of the vehicle on which the restraint bulkhead is installed,
Or have the same characteristics. The test restraint bulkheads and auxiliary seat decoration and accessories shall be complete, and the accessories on the restraint bulkheads shall be in the normal use position. If the auxiliary seat can be adjusted laterally, it shall be adjusted to the widest position in the lateral direction. If the auxiliary seat back is adjustable, it shall be adjusted to the normal use position recommended by the manufacturer. The seat belt installed on the auxiliary seat shall meet the requirements of GB 14166.
5.1.2 Test 1 Test platform
The test platform shall be mounted on a simulated tackle. Dummy Use the hybrid III type 50th percentile mannequin or TNO 10 type mannequin. The dummy shall be placed on the auxiliary seat without restraint so that its symmetry plane is consistent with the symmetry plane of said seating position. The dummy's hand should be placed on the thigh (except TNO 10), the elbow touches the backrest, the calf is in the most extended position,
If possible, the calves should be parallel to each other and the heels touch the floor. Each dummy used shall be placed on the seat according to the following procedure.
a) Place the dummy on the seat as required;
b) Place a 76 mm x 76 mm rigid plane as low as possible in front of the dummy's torso;
c) Press this plane against the dummy's torso with a horizontal force of 250 N to 350 N, adjust the position of the dummy and keep the center plane of the head flat
Traveling on the plane of symmetry of the vehicle;
d) carefully remove the rigid plane;
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) The equipment installed should not have any effect on the movement of the dummy during a collision;
h) Before the test, the temperature and humidity of the measuring instrument system should be stable and maintained in the range of 19 ℃ ~ 26 ℃, 10% ~ 70%
Inside. Collision simulation The collision speed of the simulated tackle shall be 30 km/h to 32 km/h. The deceleration or acceleration-time curve of the simulated tackle shall be maintained within the limited interval shown in Figure 1.
Figure 1.Average deceleration or acceleration-time curve The average deceleration or acceleration shall be between 6.5 g and 8.5 g. The injury value of dummy is not measured during the test.
5.1.3 Test 2 Repeat the test specified in 5.1.2 on the hybrid III type 50th percentile dummy wearing a seat belt and measure its injury
Damage value. The measurement of the trolley and dummy shall be performed in accordance with the provisions of Appendix A, and the allowable injury indicators shall be determined in accordance with Appendix B. Test 2 may be omitted if one of the following conditions is met.
a) Three-point safety belts and fixing points are installed on the rear seat adjacent to the restraint partition, and fully comply with the regulations of GB 14167
b) Constrain the impact area of the head of the bulkhead in accordance with 5.3. The deceleration acting on this impact head type 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 Impact Area
The head impact zone on the restraint partition is the space between two longitudinal vertical planes symmetrical to the H-point of the adjacent seat at a distance of 400 mm.
And according to the description of GB 11552-2009 Appendix C, the restraint partition is contacted by the head device from the vertical rotation to the horizontal position.
Area, this head device should be placed in accordance with the provisions of Appendix A of GB 11552-2009, and the distance from the center to the centerline of the rotation axis
Continuous adjustment from 736 mm to 840 mm.
5.2.2 Impact speed and direction
In the head-type impact zone, any contact point on the constrained baffle is impacted at a speed of 24.1 km/h ~ 25.3 km/h, and it should be able to fully
Meet the energy absorption characteristics requirements specified in The direction of impact coincides with the surface normal of the contact point determined in 5.2.1 (see
figure 2).
Figure 2 Schematic diagram of the impact direction of the constrained bulkhead
5.2.3 Head Shape Model During the head impact test, the head model used to measure deceleration is a hemispherical or spherical group with a radius of 82.5 mm.
The resulting hard surface has an equivalent mass of 6.8 kg and a surface roughness of no more than 1.6 μm. The head model is equipped with two acceleration sensors, whose axial position is consistent with its movement direction. Deceleration value should take two
The average of the acceleration sensor readings. The head model is guided by the collision device, and its moving direction is not affected by each test surface specified in this standard.
5.3 Strength test of restraint partition fixture
5.3.1 Test equipment A rigid structural member capable of representing the restraint bulkhead on the vehicle shall be provided with the connector (including the restraint bulkhead) provided by the manufacturer.
Panel side wall fixings, bolts, etc.) are mounted on the fixings to be tested. Except for the distance between the floor fixing points and the height of the side fixing points, the other dimensions of the restrained partition are completely the same.
Impact direction
The same results in a change in the type of the constrained partition, and all are installed on the fixed parts of the same structure, only for the most unfavorable conditions (constrained partition
The model with the shortest leg distance and the lowest height of the side wall fixing point is tested according to the requirements of 5.3.
5.3.2 Test procedure F-force application
a) At a distance of 750 mm above the reference plane, the force F acts at different fixed points through the rigid structure specified in as
The geometric center perpendicular of the polygon consisting of the vertices;
b) F-force is horizontal and points to the front of the vehicle;
c) The duration of force application shall be not less than 0.2 s. F force is determined by equation (1)
F = (5000 ± 50) × i (1)
In the formula.
F-force, unit is N;
i-Number of seat seats tested for fixtures.
6 Inspection rules
6.1 Factory inspection
6.1.1 Restricted partitions shall be inspected and qualified by the quality inspection department of the manufacturer, and the product shall not be shipped until a product certificate is issued.
6.1.2 The factory inspection items are the items specified in 4.2, 4.3.1, and 4.3.2, and the sampling number is 3% of each batch of products, with a minimum of 3 pieces.
6.2 Type inspection
6.2.1 Type inspection shall be carried out on the product in one of the following situations.
a) Stereotype appraisal of new product put into production or old product transferred to factory;
b) After the formal production, if the structure, material and process are changed greatly, which may affect the performance of the product;
c) 2 years of normal production (or agreed between supply and demand);
d) When the product is discontinued for one year, when it resumes production;
e) When a quality supervision agency requests a type inspection.
6.2.2 Type inspection items are the items specified in 4.1 ~ 4.5. A minimum of 2 items shall be inspected and the sampling base shall be no less than 5.
6.2.3 During type inspection, among the specified inspection items, when any of the items specified in 4.4 and 4.5 fails the inspection,
It is judged as unqualified; if any of the other items fails the inspection, the sampling can be doubled and the unqualified item can be re-checked
If it still fails, it is judged as failed.
7 Packaging, transportation and storage
7.1 Packaging
Restraint partitions shall be in protective packaging.
7.2 Transport
Restricted partitions should be lightly loaded and unloaded during transportation to avoid damage and prevent sunlight 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 trolleys and dummy
A.1 For the detection of trolleys and dummy, its measurement system shall meet the requirements of ISO 6487.
A.2 Dynamic test
A.2.1 Measurements made on a trolley
The deceleration/acceleration characteristics of the trolley should be determined based on the readings of the longitudinal acceleration sensor of the rigid structure part on the trolley.
The measurement system uses the CFC 60 data channel.
A.2.2 Measurements on dummy
Different parameter measurements should be recorded through the independent data channels of the following CFCs (channel frequency levels).
A.2.2.1 Measurement of dummy head
The combined acceleration of the head centroid (γr) should be measured with CFC600.
A.2.2.2 Measurement of the dummy's chest
The synthetic acceleration of the center of mass of the chest was measured with CFC180.
A.2.2.3 Measurement of dummy legs
Axial pressure should be measured with CFC 600.
Appendix B
(Normative appendix)
Determination of allowable injury indicators
B.1 Head Allowance Index (HIC)
This indicator should be calculated according to the three-dimensional synthetic acceleration measured in A2.2.1 in Appendix A, and the formula is as follows.
) (
− = 
2 = γl
2 + γv
2 + γt
Where. t1 and t2-arbitrary values of time during the test, the unit of t1 and t2 is s;
γγ- composite acceleration of head centroid position, g (g = 9.81 m/s
γl-instantaneous longitudinal acceleration, g (g = 9.81 m/s
γv-instantaneous vertical acceleration, g (g = 9.81 m/s
γt-instantaneous lateral acceleration, g (g = 9.81 m/s
B.2 Thoracic Allowance Index (ThAC)
This indicator is determined by the absolute value of the combined acceleration (g) and the acceleration duration (ms). The combined acceleration is in accordance with A 2.2.2 in Appendix A.
B.3 Leg Allowance Index (FAC)
This indicator is determined by the pressure transmitted by each leg of the human body model (measured in accordance with A2.2.3 in Appendix A, in kN) and pressure.
The duration (ms) is determined.
Related standard:   QC/T 1030-2016  QC/T 1031-2016
Related PDF sample:   QC/T 1048-2016  QC/T 476-2007
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