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GB 11550-2009 PDF in English


GB 11550-2009 (GB11550-2009) PDF English
Standard IDContents [version]USDSTEP2[PDF] delivered inName of Chinese StandardStatus
GB 11550-2009English135 Add to Cart 0-9 seconds. Auto-delivery. Strength requirement and test of automobile seats head restraints Obsolete
GB 11550-1995English199 Add to Cart 2 days Motor vehicles--Seats head restraints--Performance requirements and test methods Obsolete
GB 11550-1989EnglishRFQ ASK 3 days Motor vehicles--Seats head restraints Obsolete
Standards related to (historical): GB 11550-2009
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GB 11550-2009: PDF in English

GB 11550-2009 GB ICS 43.040.60 T 26 National Standard of the People’s Republic of China Replacing GB 11550-1995 Strength requirement and test of automobile seats head restraints ISSUED ON. SEPTEMBER 30, 2009 IMPLEMENTED ON. JANUARY 01, 2011 Issued by. General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration Committee. Table of Contents Foreword ... 3  1 Scope ... 5  2 Normative references ... 5  3 Terms and Definitions ... 6  4 Requirements ... 8  5 Test methods ... 10  Annex A ... 13  Annex B ... 14  Annex C ... 17  Annex D ... 19  Annex E ... 20  Foreword  All technical contents of this Standard are compulsory. This Standard will replace GB 11550-1995 Motor vehicles - Seats head restraints - Performance requirement and test methods. This Standard modifies and adopts Economic Commission for Europe’s Regulations ECE R25 (Version 1, 1999) Uniform Provisions Concerning the Approval of Head Restraints (regardless whether it is integrated with seats) (English version). This Standard has been redrafted according to ECE R25. Comparison schedule between chapter numbering of this Standard and Regulations ECE R25 is listed in Annex A. Considering the situations of our country, when adopting ECE R25, there have been some changes in this Standard. The main technical differences BETWEEN this Standard AND ECE R25, and the reasons are as follows. - Delete Annex 3 “Procedure for Determining the ‘H’ Point and the Actual Torso Angle for Seating Positions in Motor Vehicles” of ECE R25. In this Standard, the contents involved with this aspect shall be executed by referring to the contents of Annex C of newly issued national standard GB 11551-2003. This prevents the errors in practical operation caused by difference of verbiage in standard drafting. - Delete Chapter 3 Application of approval, Chapter 4 Markings, Chapter 5 Approval, Chapter 8 Conformity of production, Chapter 9 Penalties for non-conformity of production, Chapter 10 Modification and extension of approval of a type of head restraint, Chapter 11 Instructions, Chapter 12 Production definitely discontinued, Chapter 13 Transitional provisions, Chapter 14 The contents - Names and addresses of certification department and administrative departments belong to “certification programs and certification mark”. The reasons are caused by the form difference of standard system and legislative system. Main differences between this Standard and GB 11550-1995 include. - Add general requirements of head restraints (4.1 of this version); - Add requirements of head restraints surface curvature (4.2 of this version); - Add requirements of head restraints clearance dimension (4.6.2.2 and 4.6.3 of this version); Strength requirement and test of automobile seats head restraints 1 Scope This Standard specifies terms and definitions, requirements and test method for automobile seats head restraints.1 This Standard applies to seats head restraint of vehicles of categories M and N of GB/T 15089-2001. This Standard does not apply to head restraint of folding, side-facing or rearward-facing seats. 2 Normative references    The following referenced documents are indispensable for the application of this document. For dated references, subsequent amendments (corrigenda excluded) or revisions of these publications do not apply. However, the parties who enter into agreement based on this Standard are encouraged to investigate the possibility of applying the latest edition of the standard. For undated references, the latest edition of the referenced document (including any amendments) applies. GB 11551-2003 The protection of the occupants in the event of a frontal collision for passenger vehicle GB 13057-2003 The strength of the seats and their anchorages of passenger vehicles GB 15083-2006 Strength requirement and test of automobile seats, their anchorages and any head restraints GB/T 15089-2001 Classification of power-driven vehicles and trailers ISO 6487.1980 Measurement technology for collision test. Measurement instrument 1 Head restraints of vehicle of category of M1 in compliance with GB 15083-2006 can be regarded as to meet this Standard. 3.3 type of seat Seats which share same dimension, framework or pad. The surface and color can be different. 3.4 type of head restraint Head restraints which share same dimension, framework or pad. The surface, color and panel skin can be different. 3.5 reference point (H point) Crossing point BETWEEN torso of three-dimensional H-point device representing human body in relation to the theoretical pivot of thigh AND longitudinal vertical plane of seat. 3.6 reference line The line on the three-dimensional manikin illustrated in Figure C.1 of Attachment 1 of Annex C of GB 11551-2003. 3.7 head line A straight line passing through the centre of gravity of the head and through the joint of the neck and the thorax. When the head is at rest, the head line is situated in the extension of the reference line. 3.8 folding seat An auxiliary seat intended for occasional use and normally folded. 3.9 adjustment system The device by which the seat or its parts can be adjusted to a position suited to the for the pressure produced by headform for test using, shall not exist rigid projections which may cause injure. 4.4 The height of head restraints shall meet the following requirements. 4.4.1 Measure the height of head restraints as described in paragraph 5.2 below. 4.4.2 For head restraints not adjustable for height, the height of front seats shall not be less than 800 mm; For other seats, the height shall not be less than 750 mm. 4.4.3 For head restraints adjustable for height. 4.4.3.1 The head restraint’s height measured at the highest adjustable position. For the front seats, the values shall not be less than 800 mm; For other seats, the values shall not be less than 750 mm. 4.4.3.2 There shall be no “use-position” in a height of less than 750 mm. 4.4.3.3 Except the front seats, other seats’ head restraints can be adjusted to a position of which the height is less than 750 mm. However, occupants must be clearly informed that this place is not the use-position of head restraints. 4.4.3.4 The front seats, if their head restraints can automatically return to the use-position when the seat is occupied, can automatically lower the height to less than 750 mm when the seat is not occupied. 4.4.4 To guarantee the adequate clearance BETWEEN the head restraint AND roof, windows and any part of the vehicle structure, for the front seats, the size specified in 4.4.2 and 4.4.3.1 can be less than 800; for other seats, it can be less than 750mm. However, the clearance shall not exceed 25 mm. For seats fitted with displacement and/or adjustment systems, this shall apply to the seat. Furthermore, there shall not have any “use-position” lower than 700 mm. 4.4.5 For the rear center seats or head restraints of seating positions, it may reduce the height specified in 4.4.2 and 4.4.3.1. However, it shall not be less than 700 mm. 4.5 For head restraint installed with adjustable height, the use-part’s height of the head restraints measured in 5.2 provisions shall not be less than 100 mm. 4.6 For head restraint not installed with adjustable height, the gap of the head restraint and the seat-back shall not be more than 60 mm. 4.6.1 For head restraint installed with adjustable height, in its lowest position, the gap of head restraint and seat-back shall not be more than 25 mm. 4.6.2 For integral head restraint, the area to be considered is. Annex B  (normative) Test of energy absorption B.1 Installation, test apparatus, recording instruments and procedure B.1.1 Installation Install the head restraint that is covered with energy absorbing material on the seat or the structural part of the vehicle. Firmly fix the seat or the structural component to the test bench so as to remain stationary. Without particular requirements, it shall ensure mounting base to be approximately horizontal. If seat-back’s dip-angle is adjustable, it shall be adjusted to the position as specified in 5.2.2. Install the head restraints on the seat-back. For the separable head restraint, it shall be installed on the part of the vehicle according to actual installing position. For adjustable head restraint, adjust it to the most unfavorable position within the adjustable range. B.1.2 Test apparatus B.1.2.1 This apparatus consists of a pendulum whose pivot is supported by ball-bearings. The reduced mass at its percussion centre is 6.8 kg. The lower end of the pendulum has a rigid headform of which the diameter i... ......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.