Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BRITIS H S TAND ARD AUTO MO BILE S E RIE S BS AU 2 b : 995 Specification for Rearward-facing restraint systems for infants, for use in road vehicles UD C 62 47 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 202b:1995 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee AUE/7, Automobile occupant restraint systems, upon which the following bodies were represented: Automobile Association Baby Equipment Hirers’ Association British Retail Consortium BSI Testing Services Child Accident Prevention Trust Consumer Policy Committee of BSI Consumers’ Association Department of Transport Department of Transport (Transport Research Laboratory) ICE (Ergonomics) Ministry of Defence Motor Industry Research Association National Automobile Safety Belt Association Royal Automobile Club Royal Society for the Prevention of Accidents Society of Motor Manufacturers and Traders Limited University of Birmingham This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on December 995 © BSI 09- 999 First published June 985 Second edition December 995 The following BSI references relate to the work on this standard: Committee reference AUE/7 Draft for comment 94/701 553 DC ISBN 580 24655 Amendments issued since publication Amd No Date Comments Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 202b:1995 Contents Page Committees responsible Inside front cover Foreword iii Scope References Definitions General Emergency release, adj usters and other rigid parts Straps Information Marking Annex A (normative) Manikins Annex B (normative) Dynamic test apparatus 22 Annex C (normative) Method of defining the head impact area 29 Annex D (normative) Test of energy- absorbing material 30 Annex E (normative) Corrosion test 31 Annex F (normative) Overturning tests 31 Annex G (normative) Dynamic tests 32 Annex H (normative) Flammability test 34 Annex J (normative) Emergency release test 41 Annex K (normative) Emergency release strength test 41 Annex L (normative) Test of adj uster 43 Annex M (normative) Microslip test 43 Annex N (normative) Conditioning test for adj usters mounted directly on an infant restraint system 43 Annex P (normative) Test for lock- off devices 44 Annex Q (normative) Tests on retractors 45 Annex R (normative) Dust- resistance test for emergency- locking retractors 45 Annex S (normative) Strap strength test and width measurement 47 Annex T (normative) Environmental conditioning 47 Annex U (normative) Standard seat belt 51 Annex V (normative) Installation procedures for the dynamic tests 56 Figure — Limits of manikin movement during dynamic test Figure A — Principal dimensions of the kg manikin Figure A — Shoulder stiffness test © BSI 09- 999 10 Figure A — Leg j oint stiffness test 10 Figure A — Exploded view of kg manikin 11 Figure A — Principal dimensions of the kg and 1 kg manikins 14 Figure A — Adj ustment of neck cable 15 Figure A — Adj ustment of atlas- axis j oint 16 Figure A — Adj ustment of hip j oint 16 Figure A — Adj ustment of knee j oint 17 Figure A — Adj ustment of shoulder j oint 17 Figure A 1 — Adj ustment of elbow j oint 18 Figure A — Adj ustment of lumbar cable 18 Figure A — Calibration of the lumbar spine 20 Figure A — Calibration of the abdominal insert 21 Figure A — Calibration of the neck 21 i Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 202b:1995 Page Figure B — Dimensions of the seat and seat cushions 23 Figure B — Openings in the base of the test seat 24 Figure B — Dimensions of the aluminium base plate 25 Figure B — Dimensions of the cover material 26 Figure B — Impact- test apparatus for certification of the test- seat cushion 27 Figure B — Positions of anchorages on the test trolley 28 Figure C — Method of defining the head impact area 29 Figure D — Headform for testing energy- absorbing material 30 Figure G — Trolley deceleration curve for frontal impact as a function of time (for calibrating the stopping device) 33 Figure G — Trolley deceleration curve for rear impact as a function of time (for calibrating the stopping device) 34 Figure H — Sample for the flammability test 35 Figure H — Example of combustion chamber with sample holder and pan 36 Figure H — Dimensions of combustion chamber 37 Figure H — Dimensions of pan 38 Figure H — Dimensions of sample holder 39 Figure H — Example of cross- section of lower part of U- shaped frame, designed to be fitted with supporting wires 40 Figure K — Typical strength test device for the emergency release 42 Figure N — Apparatus for conditioning adj usters mounted directly on an infant restraint system 43 Figure P — Schematic layout of the test for lock- off devices 44 Figure R — Arrangement of apparatus for dust- resistance test 46 Figure T — Examples of arrangements for abrasion conditioning for straps with quick adj usters 49 Figure T — Examples of arrangements for abrasion conditioning for straps which change direction in passing through a rigid part 50 Figure U — Standard seat belt configurations 52 Figure U — Standard anchorage plate 53 Figure U — Central part of the standard three- point retractor belt 54 Figure U — Standard pillar post loop 55 Figure V — Dynamic test installation 57 Table A — Mass of components of the kg manikin Table A — Principal dimensions of the kg manikin Table A — List of components of the kg manikin 12 Table A — Mass of components of the kg manikin 13 Table A — Principal dimensions of the kg manikin 15 Table A — Mass of components of the 1 kg manikin 19 Table A — Principal dimensions of the 1 kg manikin 20 Table B — Characteristics of the polyurethane foam 25 Table B — Characteristics of the fabric covering the seat 25 Table G — Channel frequency classes 32 Table G — Mass of manikins for dynamic tests 32 Table G — Conditions for the frontal- impact test 33 Table G — Conditions for the rear- impact test 34 Table U — Specification of the straps for the standard seat belt List of references ii 55 Inside back cover © BSI 09- 999 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 2 b : 995 Fore word This British Standard has been prepared by Technical Committee AUE/7, at the request of the Department of Transport This standard specifies requirements for restraining systems for carrying infants up to a mass of kg in road vehicles Because of their physical structure and their need for prolonged rest, babies are best carried in a semi- reclined position, facing the rear of the vehicle Young children can be carried in a similar mode or in systems meeting other British Standards and international regulations, such as BS 3254- 2: 991 and ECE Regulation No 44 This edition of BS AU 202 differs from its predecessor in a number of important respects Most notably, it defines two mass groups and sets out specifications for rear- facing systems for each group: up to kg (group devices) and up to kg (group + devices) Devices of either group can be used on the front or rear seat of most road vehicles, as recommended by the manufacturer of the restraint system The specifications, test arrangements and test methods have been extensively revised in order to align this edition of the standard closely with the 03 revision of ECE Regulation No 44 A British Standard does not purport to include all the necessary provisions of a contract Users of British Standards are responsible for their correct application C o mp liance with a British S tandard doe s not o f itse lf confe r immunity fro m le gal ob ligations S ummary o f p age s This document comprises a front cover, an inside front cover, pages i to iv, pages to 58, an inside back cover and a back cover This standard has been updated (see copyright date) and may have had amendments incorporated This will be indicated in the amendment table on the inside front cover © BSI 09- 999 iii Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI iv blank Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 202b:1995 Scope This British Standard specifies requirements for 3.4 special-needs restraint rearward- facing infant restraint systems suitab le an infant restraint system designed for infants who for general use in most vehicles and designed for use have special needs as a result of either a physical or with an adult seat b elt which carries a BSI mental handicap Kitemark, an “E ” mark or an “e” mark It also specifies requirements for rearward- facing infant carriers for infants with special needs as a result of either a physical or mental handicap 3.5 infant carrier that part of the infant restraint system intended to accommodate the infant in a rearward- facing This standard applies to infant restraint systems semi- recumb ent position designed for either of two mass ranges: group 3.6 strap devices for infants up to kg; and group + devices for infants up to kg a flexible component designed to restrain the infant References or infant carrier and to transmit forces to the vehicle structure either directly or indirectly 2.1 Normative references This British Standard incorporates, b y dated or undated reference, provisions from other 3.7 harness publications These normative references are made a b elt assembly comprising, as a minimum, shoulder at the appropriate places in the text and the cited restraints restraints and crotch strap It may also publications are listed on the inside back cover For dated references, only the edition cited applies: any subsequent amendments to or revisions of the cited publication apply to this British Standard only when incorporated in the reference b y amendment or revision For undated references, the latest edition of the cited publication applies, together with any amendments 2.2 Informative references include a lap strap 3.8 crotch strap a strap, or series of straps, which is attached to the infant carrier and the buckle and is positioned to pass between the infant’s thighs 3.9 lap strap This British Standard refers to other publications a strap which, either in the form of a complete b elt that provide information or guidance Editions of or in the form of a component of such a belt, passes these publications current at the time of issue of this across the front of, and restrains, the infant’s pelvic standard are listed on the inside back cover, but region reference should be made to the latest editions Definitions 3.10 emergency release a device that can be quickly and easily operated to For the purposes of this British Standard, the release the infant from the vehicle with or without following definitions apply the infant carrier 3.1 infant restraint system NO TE a comb ination of infant carrier, straps and adj usters, designed to be secured in a road vehicle by an approved adult seat b elt 1) 3.2 group device an infant restraint system for infants up to a mass of kg 3.3 group + device The emergency release may incorporate the adj uster 3.11 enclosed emergency release a device designed in such a way that it is not possible to release the b uckle using a test sphere of diameter of 40 mm 3.12 non-enclosed emergency release a device designed in such a way that it is possib le to release the buckle using a test sphere of diameter of 40 mm an infant restraint system for infants up to a mass of kg 1) An approved seat b elt is one that carries a BSI Kitemark, an “E ” mark or an “e” mark © BSI 09- 999 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 202b:1 995 4.1 If the restraint can be set in an inclined 3.1 retractor a device designed to accommodate a part or the whole of a strap 3.1 automatically-locking retractor position, it shall be possible to thus set it without manual readj ustment of the straps A deliberate hand- action shall be required in order to put the restraint in the inclined position 4.1 The infant restraint system shall be designed, or capable of adj ustment, so that the torso line of a retractor which allows the strap to be extracted the kg manikin specified in Annex A is less only by voluntary intervention by the user than 45 ° to the horizontal when the system is 3.1 resting on a horizontal surface emergency-locking retractor 4.1 All straps of the restraint shall be so placed a retractor which does not restrict the belt- wearer’s that they cannot cause discomfort to the wearer in freedom of movement in normal driving conditions normal use or assume a dangerous configuration and which locks automatically in an emergency The distance between the shoulder- straps in the when actuated, for example, by deceleration of the vicinity of the neck shall be at least the width of the vehicle neck of the appropriate manikin 4.1 The assembly shall not subj ect weak parts of 3.1 adj uster a device, through which a strap passes, enabling the restraint or its attachments to be adj usted to the physique of the wearer The adj uster may be part of the buckle or may be a retractor 3.1 quick adj uster the infant’s body (abdomen, crotch, etc ) to excessive stresses The design shall be such that compression loads shall not be imposed on the crown of the infant’s head in the event of a collision 4.1 The restraint system shall not exhibit any sharp edges or protrusions 4.1 The restraint system shall be designed so that, when correctly installed in the vehicle, it does not an adj uster which can be operated by one hand in subj ect weak parts of the infant’s body (abdomen, one continuous movement crotch, etc ) to the supplementary inertial forces 3.1 that it sets up lock-off device 4.1 Devices which lock the adult seat belts to the a device which locks and prevents movement of one restraint system shall be permanently attached to section of the webbing of an adult safety belt relative the restraint system to another section of the webbing of the same belt 3.1 composite material a material composed of several layers of similar or different materials held together continuously by cementing, bonding, cladding or welding NOTE 4.1 If the infant restraint is designed for more than one infant, each restraint system shall be fully If the holding together of the materials is not continuous (e g in the case of sewing, high- frequency welding, riveting) and independent with regard to load transfer and adj ustments 4.1 1 The main load- bearing contact point between the infant restraint system and the adult seat belt shall not be less than 50 mm from the Cr axis when measured with the infant restraint system on the samples of each component material can therefore be taken dynamic test seat specified in B.1 This shall apply individually, the material is not considered to be a composite to all adj ustment configurations material General 4.1 There shall be side wings with a depth of minimum 90 mm measured from the median of the surface of the backrest These side wings shall start 4.1 Design and construction at the horizontal plane passing through point A 4.1 The restraint system shall satisfy the defined in Annex C, and shall continue to the top of requirements of this standard when the system is in the seat back any intended position For special- needs restraints, the primary means of restraint shall satisfy the requirements of this standard when the system is in any intended position, without the use of any additional restraining devices which may be present NOTE Upwards from a point 90 mm below the top of the side wing, the depth of the side wing may be gradually reduced (See Figure C ) 4.1 The head impact area defined in Annex C shall comprise energy- absorbing material with a peak acceleration of less than 60 g when measured in accordance with Annex D 4.1 The restraint system shall support the infant’s head © BSI 09- 999 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 2 b: 995 NO TE The energy- absorbing material may be an integral part 4.2.4 of the infant restraint system When tested in accordance with Annex E, the metal parts of the restraint system shall show, to the unaided eye, no corrosion and no signs of deterioration likely to impair the proper functioning of the restraint system Flammability When determined in accordance with Annex H, the burning rate of each sample of the materials used to manufacture the restraint system shall not exceed 50 mm/min, unless the total area of the material is less than 300 cm and its total volume is less than 00 cm The manufacturer of the Pe rformance restraint system shall provide a written declaration 4.2.1 of conformity Overturning When the infant restraint system is tested in NO TE Tests confirming the validity of the declaration may be carried out at the discretion of the test authority accordance with Annex F, the manikin shall not fall out of the system When the test seat is in the upside- down position, the head of the manikin shall not move more than 300 mm from its original position in a vertical direction relative to the test seat 4.2.2 E mergency release, adj usters and other rigid parts Attachme nt and re lease of components The design of any separable parts shall be such that Dynamic tests either: When tested in accordance with Annex G, a) they cannot b e put together incorrectly; or the infant restraint system shall conform to b ) their connection other than as intended will to result in the components separating again under For group restraint systems, the head of the manikin shall not pass beyond the planes BA, AD and D E shown in Figure For group + restraint systems, the infant restraint system shall not contact the steel tube shown in Figure No part of the infant restraint system which is helping to keep the manikin in position shall break, and no b uckles or locking system shall release The manikin, excluding its limb s, shall b e retained within the system At no time during the a force of not more than 2 N, or will not adversely affect their function E me rge ncy re lease 5.2.1 General The means of releasing an infant shall b e so positioned that its function and method of operation are ob vious to a rescuer in an emergency It shall be easy to operate and to grasp NO TE For special- needs restraints, it is recognized that the additional restraining devices will restrict the speed at which an infant can be installed and removed However, the additional frontal- impact test described in G shall the torso devices should be designed to release quickly so far as possible line of the manikin create an angle of less than ° NO TE to the horizontal means of restraint The resultant chest acceleration of the kg 5.2.2 and 1 kg manikins during each test shall not exceed 55 g for more than a total period of ms The vertical component of the acceleration of the kg and 1 kg manikins from the abdomen towards the head shall not exceed 30 For special- needs restraints, the requirements of to apply only to the emergency release on the primary g for more than a total period of ms during each test The high- speed film results of the tests, or the bubble film detector, shall show no signs of Release of the infant The restraint system shall be so designed and constructed that the infant is easily and quickly installed It shall be possible either: a) to remove the infant, with the infant carrier, from the vehicle b y release of the adult seat belt or other single means of emergency release; or penetration of the abdomen of the manikins caused b ) to remove the infant from the infant carrier by by any part of the restraint system and no riding up a single means of emergency release of any lap strap onto the chest 4.2.3 Toxicity The toxicity of materials used in the manufacture of the restraint system and accessible to the restrained infant shall conform to BS 5665- 3: 989 The manufacturer of the restraint system shall provide a written declaration of conformity NO TE Tests confirming the validity of the declaration may be NO TE A clip connection between the shoulder straps of a harness b elt is deemed not to conform to a) or b ) In the case of an infant restraint system in which the infant is restrained b y means of a belt assembly comprising a lap strap and shoulder restraints without a retractor, each shoulder restraint and lap strap shall b e capab le of movement relative to each other during the procedures described in a) and b) carried out at the discretion of the test authority © BSI 09- 999 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 2 b : 995 Figure — Limits of manikin move me nt d uring d ynamic te sts 5.2.3 Engagement of the release mechanism The force required to open an emergency release It shall not be possible for the emergency release to be left in a partially closed position nor to exchange which is in the condition describ ed in J b ) , shall lie within the range 40 N to 60 N when tested in accordance with J to J the parts of the emergency release inadvertently when it is being locked The emergency release shall When not under tension, the emergency release lock only when all parts are engaged shall remain closed whatever its position 5.2.4 5.2.6 Dimensions Strength The emergency release shall be operated b y When tested in accordance with Annex K, no part of pressure on a button or on a similar device The the emergency release, adj acent straps or adj usters surface to which this pressure is applied shall have: shall b reak or b ecome detached a) for enclosed devices, an area of not less than 450 mm Adj uste rs with a width of not less 5.3.1 than mm; b ) for non- enclosed devices, an area of 250 mm and a width of not less than mm An emergency release in contact with the infant shall not b e narrower than mm General The range of adj ustment shall be sufficient to permit correct adj ustment of the infant restraint system throughout the mass group for which the system is intended All adj usters shall be quick adj usters and shall be The emergency release button or device shall b e easy to reach when the infant restraint system is coloured red and the adj acent area shall not b e red correctly installed and the infant is in position 5.2.5 5.3.2 Release force Operating force The force required to open the emergency release of When tested in accordance with Annex L, the force a restraint system which is in the condition required to operate a manual adj uster shall not described in J a) , shall not exceed 80 N when exceed 50 N The adj uster shall not break nor tested in accordance with J to J become detached © BSI 09- 999 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 202b:1 995 Figure R.1 — Arrangement of apparatus for dust-resistance test 46 © BSI 09- 999 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 202b:1 995 Annex S (normative) Strap strength test and width measurement T.3 Light conditioning The provisions of BS EN 20105-B02:1993 shall apply The strap shall be exposed to light for the time necessary to produce fading of Blue Wool S.1 Perform the test of S.2 to S.4 on two new Reference to a contrast equal to grade on the samples of strap, conditioned as specified in T.2 grey scale Repeat the test on further samples conditioned in accordance with each of the provisions of T.3 to T.6 , T.3.2 After exposure, the strap shall be kept for a minimum of 24 h in an atmosphere having a using two new samples in each case temperature of 20 °C ± °C and a relative humidity For cases where the strap changes direction in of 65 % ± % passing through a rigid part, perform the test also on two samples conditioned in accordance with the T.3.3 The breaking load (see Annex S) shall be determined within of removal of the strap relevant subclauses of T.7 from the conditioning apparatus For cases where the strap slides through a quick T.4 Cold conditioning adjuster, perform the test also on two samples T.4.1 The strap shall be kept for a minimum of 24 h conditioned in accordance with the relevant in an atmosphere having a temperature subclauses of T.7 only if the test described in of 20 °C ± °C and a relative humidity Annex M gives a result above 50 % of the limit of 65 % ± % specified in 5.3.3 T.4.2 The strap shall then be kept for 1.5 h on a S.2 Grip each strap between the clamps of a tensile plain surface in a low-temperature chamber in strength-testing machine The clamps shall be so designed as to avoid breakage of the strap at or near which the air temperature is – 30 °C ± °C It shall then be folded and the fold shall be loaded with a them The speed of traverse shall be about 100 mm/min The free length of the specimen weight of kg previously cooled to – 30 °C ± °C between the clamps of the machine at the start of T.4.3 When the strap has been kept under load the test shall be 200 mm ± 40 mm for 30 in the same low-temperature chamber, the weight shall be removed and the breaking load S.3 Increase the tension until the strap breaks Note (see Annex S) shall be measured within of the breaking load removal of the strap from the low-temperature S.4 If the strap slips, or breaks within 10 mm of either of the clamps, the test shall be invalid and a chamber new test shall be carried out on another specimen T.5 Heat conditioning T.5.1 The strap shall be kept for h in a S.5 While testing the second sample of strap which heating-cabinet atmosphere having a temperature has been conditioned in accordance with T.2 , measure its width when the load applied to it has of 60 °C ± °C and a relative humidity reached 75 % of the breaking load measured in S.3 of 65 % ± % for the first sample T.5.2 The breaking load (see Annex S) shall be determined within of removal of the strap Annex T (normative) from the heating cabinet Environmental conditioning T.1 Samples Samples shall be cut from a 10 m length of each category of strap used in the infant restraint system, except the crotch strap, for which only m is required T.2 Room conditioning The strap shall be kept for 24 h in an atmosphere having a temperature of 20 °C ± °C and a relative humidity of 65 % ± % If the test is not carried out immediately after conditioning, the specimen shall be placed in a hermetically closed receptacle until the test begins T.2.2 The breaking load (see Annex S) shall be determined within of removal of the strap from the conditioning atmosphere or from the receptacle T.2.1 © BSI 09-1999 T.3.1 T.6 Exposure to water T.6.1 The strap shall be kept fully immersed for h in distilled water, at a temperature of 20 °C ± °C, to which a trace of wetting agent has been added Any wetting agent suitable for the fibre being tested may be used T.6.2 The breaking load (see Annex S) shall be determined within 10 after removal of the strap from the water 47 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 2 b : 995 Procedure for cases where the strap changes direction in passing through a rigid Preliminary conditioning part Before abrasion conditioning, the components or devices shall be kept for a minimum of 24 h in an The angles of both webbing straps shall be as shown atmosphere having a temperature of 20 °C ± °C in Figure T.2 A load of N shall be permanently applied, as shown in Figure T.2, and the other end and relative humidity of 65 % ± % of the strap shall be attached to a device which will General give the webbing a back-and-forth motion The The abrasion conditioning shall be performed in back-and-forth motion shall be applied over a travel accordance with or , as appropriate The of 300 mm ± 20 mm, for 000 cycles at a frequency room temperature during the conditioning shall be of 0.5 Hz between 15 °C and 30 °C NOTE For cases where the strap changes direction more than T Ab rasion cond itioning T T T T T NOTE Where there is insufficient strap to test over 300 mm of shift, the conditioning procedure may be applied over a shorter length, subject to a minimum of 100 mm Procedure for cases where the strap slides through the quick adjuster A load of 10 N shall be vertically and permanently applied on one of the straps, as shown in Figure T.1 The other strap, set horizontally, shall be attached to a device which will give the webbing a back-and-forth motion The adjuster shall be so placed that the horizontal strap of the webbing remains under tension (see Figure T.1) The back-and-forth motion shall be applied over a travel of 300 mm ± 20 mm, for 000 cycles at a frequency of 0.5 Hz once in passing through a rigid part, the load of N may be increased so as to achieve the required 300 mm of strap travel through that rigid part T 48 © BSI 09-1999 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 2 b : 995 Figure T — E xamp le s of arrange me nts fo r ab rasion co nd itioning for strap s with quick ad j uste rs © BSI 09- 999 49 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 2 b : 995 Figure T — E xamp le s o f arrange me nts for ab rasio n conditioning for strap s w hich change dire ction in p assing through a rigid p art 50 © BSI 09- 999 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 202b:1 995 Annex U (normative) Standard seat belt U.1 General The seat belt used for the dynamic test and for the maximum length measurement shall conform to one of the two configurations shown in Figure U b) Belt anchorage A2 shall be fitted to trolley anchorage A (inboard) c) Belt pillar loop P shall be fitted to trolley anchorage C d) Belt retractor R shall be fitted to trolley anchorage Re X in Figure U a) shall not A + B) , measured These are a three- point retractor belt and a U.2.3 The value of two- point static belt exceed 21 mm The value of ( U.2 The three-point retractor belt U.2.1 The three- point retractor belt has the following rigid parts, indicated in Figure U a) : a) a retractor (R) ; parallel to the centre line of the strap with the strap fully extended from the spool of the retractor, shall not exceed 340 mm U.2.4 The specification of the straps is given in Table U b) a pillar loop (P); U.3 The two-point static belt c) two standard anchorage plates (A1 and A2); U.3.1 The two- point static belt shown and d) a central part (C) in Figure U b) consists of two standard anchorage plates, shown in Figure U 2, and a strap conforming Details of the anchorage plates, the central part and to U.3.3 the pillar post loop are shown in Figure U 2, U.3.2 The two- point belt anchorages shall be fitted Figure U and Figure U respectively to trolley anchorages A and B (see Figure B 6) The Y in Figure U b) shall not U.2.2 The retractor belt shall be fitted to the value of anchorages on the test seat, described in Annex B, exceed 300 mm as follows (See Figure U and Figure B 6) U.3.3 The specification of the straps is given a) Belt anchorage A1 shall be fitted to trolley in Table U anchorage B0 (outboard) © BSI 09- 999 51 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 2 b : 995 Figure U — S tand ard se at b e lt configuratio ns 52 © BSI 09- 999 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 2 b : 995 Figure U — S tand ard ancho rage p late © BSI 09- 999 53 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 202b:1 995 Figure U.3 — C entral part of the standard three-point retractor belt 54 © BSI 09- 999 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 2 b : 995 Figure U — S tandard p illar p ost lo op Tab le U — S p e cification o f the strap s for the stand ard se at b e lt C haracte ristic Material Tensile strength Elongation Width Thickness © BSI 09-1999 D e scri p ti o n/valu e kN % at 11 kN mm mm Polyester spinnblack > 28 8±2 46 ± 1.3 0.9 ± 0.2 55 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 202b:1 995 Annex V (normative) Installation procedures for the dynamic tests NOTE The installation procedure of V.1 or V.2 is performed after fitting the manikin into the restraint system as described in G.4.1 to G.4.3 NOTE Because the foam test cushion will creep after V.2.2 Adj ust the lap portion of the belt to achieve a tension load of 50 N ± N at load cell Mark the webbing with chalk where it passes through the simulated buckle Whilst maintaining the belt at this position, adj ust the diagonal portion to achieve a tension of 50 N ± N at load cell by either locking the webbing at the infant carrier webbing installation of the infant restraint system, the dynamic test locker or by pulling the belt at a point close to the should be conducted no more than after installation To standard retractor allow the cushion to recover, the minimum period between two tests using the same cushion should be 30 V.2.3 Extract all webbing from the retractor spool V.1 Lap belt only (see U.3 ) and allow the tension in the belt between the Fit load cell to the outboard position as shown in Figure V Install the infant restraint system and tension the reference seat belt at the outboard position to achieve a load of 75 N ± N at the outboard position V.2 Lap and diagonal belt (see U.2 ) retractor and pillar loop to drop to the retractor tension Lock the spool before conducting the dynamic test NOTE Load cells fitted directly to the belt webbing may be disconnected electrically, but should be left in place during the dynamic test Alternatively load cell may be replaced by a load cell fixed at the anchorage point V.2.1 Fit load cell to the outboard position as shown in Figure V Install the infant restraint system into the correct position If a lock- off device is fitted to the infant carrier and acts upon the diagonal belt, place load cell at a convenient position behind the infant carrier between the lock- off device and the simulated buckle as shown in Figure V If no lock- off device is fitted, or if the lock- off device is fitted at the emergency release, position load cell at a convenient position between the pillar loop and the infant carrier The mass of load cell shall not exceed 250 g 56 © BSI 09- 999 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI © BSI 09- 999 57 Figure V — D ynamic te st installation BS AU 2 b :1 995 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI 58 blank Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 202b:1995 List of references (see clause 2) Normative references BSI publications BRITISH STANDARDS INSTITUTION, London BS 3254, Seat belt assemblies for road vehicles BS 3254- : 988, Specification for restraining devices for adults BS 3254- 2: 991 , Specification for restraining devices for children BS 5665, Safety of toys BS 5665- 3: 989, BS AU 228, Specification for migration of certain elements Impact tests on road vehicles BS AU 228- : 989, BS EN 201 05, Specification for measurement techniques and general instrumentation Textiles — Tests for colour fastness BS EN 201 05- B02: 993, BS EN 22768, Colour fastness to artificial light (xenon arc fading lamp test) General tolerances BS EN 22768- : 993, indications BS EN 22768- 2: 993, Tolerances for linear and angular dimensions without individual tolerance Geometrical tolerances for features without individual tolerance indications ISO publications INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO) , Geneva (All publications are available from Customer Services, BSI ) ISO 845: 988, Cellular plastics and rubbers — Determination of apparent (bulk) density ISO 798: 983, break Polymeric materials, cellular flexible — Determination of tensile strength and elongation at ISO 856: 980, Polymeric materials, cellular flexible — Determination of compression set ISO 2439: 980, Polymeric materials, cellular flexible — Determination of hardness (indentation technique) Polymeric materials, cellular flexible — Determination of stress-strain characteristic in compression — Part : Low-density materials ISO 3386- : 986, Polymeric materials, cellular flexible — Determination of stress-strain characteristic in compression — Part 2: High-density materials ISO 3386- 2: 984, DIN publications DEUTSCHES INSTITUT FÜR NORMUNG e V , Berlin (All publications are available from Customer Services, BSI ) DIN 53587, Testing of rubber and elastomers; determination of the residue of pyrolysis of rubber and elastomers containing silicones Other reference ECE Regulation No 6, Uniform provisions concerning the approval of safety-belts and restraint systems for adult occupants of power-driven vehicles 9) Informative reference ECE Regulation No 44, Uniform provisions concerning the approval of restraining devices for child occupants of power-driven vehicles9) 9) Available from HMSO © BSI 09- 999 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 02: 08: 48 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 202b:1995 BSI — British Standards Institution BS I is the indep endent national b ody res p ons ib le for p rep aring Britis h S tandards It p res ents the UK view on s tandards in E urop e and at the international level It is incorp orated b y Royal C harter Revisions Britis h S tandards are up dated b y amendment or revis ion Us ers of Britis h S tandards should make s ure that they p oss es s the latest amendments or editions It is the constant aim of BS I to imp rove the quality of our p roducts and services We would b e grateful if anyone finding an inaccuracy or amb iguity while us ing this Britis h S tandard would inform the S ecretary of the technical committee res p ons ib le, the 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