BRITISH STANDARD AUTOMOBILE SERIES BS AU 186a 1983 Incorporating Amendment No 1 Specification for Carry cot restraints UDC 629 113 042 2 614 862 053 3 Reproduced by IHS under l icense with BSI Uncontr[.]
BRITISH STANDARD AUTOMOBILE SERIES BS AU 186a:1983 Incorp orating Am endm ent No Specification for Carry cot restraints UD C 62 1 042 : 61 862 - 053 Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy BS AU 186a:1983 Committees responsible for this British Standard This British Standard was published under the direction of the Automobile Standards Committee AUE/- Its preparation was entrusted to Technical Committee AUE/7 upon which the following bodies were represented: Automobile Association Consumer Standards Advisory Committee of BSI Consumers Association Department of Industry (Mechanical Engineering) Department of the Environment (Transport and Road Research Laboratory) Department of Transport Institute of Housing Man- made Fibres Producers’ Committee Medical Research Council Ministry of Defence Motor Cycle Association of Great Britain 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 Tape and Webbing Manufacturers’ Association University of Birmingham This British Standard, having been prepared under the direction of the Automobile Standards Committee, was published under the authority of the Board of BSI and comes into effect on 31 January 983 © BSI 02- 2000 The following BSI references relate to the work on this standard: Committee reference AUE/7 Draft for comment 82/71 895 DC ISBN 580 13240 Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy Amendments issued since publication Amd No Date of issue Comments 5072 January 986 Indicated by a sideline in the margin BS AU 186a:1983 Contents Page Committees responsible Foreword Inside front cover ii Scope Definitions General Buckles and rigid parts Straps Performance Instructions for use Marking Appendix A Test procedures for hardware Appendix B Test procedures for the device Appendix C Environmental conditioning Appendix D Test of breaking strength of straps (static test) Figure — Body form for use with static strength test Figure — Example of standard car seat back for testing © BSI 02- 2000 Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy seat restraining device Publications referred to i BS AU 86a: 983 Fore word This British Standard has been prepared under the direction of the Automobile Standards Committee at the request of the Department of Transport Whilst these restraining devices are intended for use with carry cots, or specially designed carry cots which form an integral part of the system, by children up to kg, it is recommended that consideration should be given to the use of a child restraining device which meets the requirements of BS AU 57b “Childrens restraining devices ” or BS 3254 “Seat b elt ass em b lies for m otor v ehicles ” when the child reaches a weight of kg Certification Attention is drawn to the certification facilities described on the inside back cover 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 omp liance with a British S tand ard d oe s no t of itse lf confe r immunity from le gal ob ligatio ns S ummary of p age s This document comprises a front cover, an inside front cover, pages i and ii, pages to 8, 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 ii Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy © BSI 02- 2000 BS AU 86a: 983 2.4 S cop e This British Standard specifies requirements for b uckle restraining devices for separate use, i e as a quick release device that can readily be operated individual equipment, by child occupants of motor by an adult to release the child from attachment to vehicles, who have a mass of less than kg, in the car with or without the carry cot conj unction with a carry cot which may or may not 2.5 comply with this British Standard (see strap 3.3.4) It is intended to reduce the probability of inj ury to children in an accident This standard applies to devices intended for use in the forward- facing rear seating positions in the vehicle or in the a flexible component designed to restrain the carry cot or the vehicle seat or both and to transmit forces to the vehicle structure forward- facing front seating positions in such 2.6 vehicles as light commercial vehicles where there is adj uste rs adequate space for a carry cot to be carried devices through which the webbing passes and by transversely moving which the effective length of the straps can Manufacturing requirements are specified for the be controlled to suit the circumstances materials used and for the finish of buckles and other rigid parts Tests are specified for the determination of the strength and durability characteristics of the restraining devices and of their components The 2.7 attachme nts devices at the end of the webbing straps used to attach those straps to the car structure standard does not specify requirements for the parts 2.8 of the vehicle to which these restraining devices are carry co t re straini ng co mp o ne nts anchored those components of an assembly that directly Two groups of restraining devices are dealt with: restrain the movement of the carry cot and are in Group A for general use with any carry cot, and Group B incorporating a specially designed carry contact with it General cot that forms an integral part of the system NOTE The titles of the publications referred to in this standard are listed on page C o nstruction a) D e finitions For the purposes of this standard the following definitions apply 2.1 carry cot a portable device, including a suitable detachable The carry cot restraining device shall be composed of the following Gro up A dev ices A set of carry cot restraining components and a vehicle seat restraining device together with their attachments b) Group B dev ices A carry cot, a set of carry cot restraining components and a vehicle seat restraining device and their attachments D e sign A vehicle pram body, having a mass of up to kg with sides 3.2.1 and a flat bottom for the carriage of a child in a lying seat squab restraining device shall be designed and position 2.2 carry cot re straint an assembly consisting of a set of straps to retain a carry cot in place transversely on a car seat Vehicle seat sq uab res training dev ice provided for limiting the forward movement and the rotational movement in a lateral plane of any part of the vehicle seat squab with which the device is used 3.2.2 Carry co t restraining dev ice The carry cot restraining device shall be designed so that the carry cot is held in position in the event of 2.3 deceleration, overturning or rolling of the car and ve hicle se at re straining d e vice the general design, assembly and finish shall not a device to anchor a vehicle seat back to the vehicle incorporate any item which might cause inj ury to structure to limit its forward movement and the child rotational movement in the lateral plane 3.2.3 Ease o f detachm ent The carry cot restraining device shall be so designed that the carry cot can be readily removed and refitted by the use of one or two buckles © BSI 02- 2000 Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy BS AU 86a: 983 A buckle that has not previously been subjected to a force shall be used for Restraining devices shall comply this test The force needed the buckle when with to and clauses , and after being it is not under tension shalltobeopen not less than 10 N subjected to the environmental conditioning measured perpendicularly to the surface of the described in Appendix C operating device in its initial position The design of any separable parts shall be such that either: In the case of two strap samples conditioned in a) the separable parts of the device cannot be put accordance with , the strap shall withstand a together incorrectly; or breaking force of not less than 3.6 kN when b) their connection other than as intended will determined in accordance with Appendix D The result in the components either: differences between the breaking forces of the two 1) separating again under a force of 22 N; or samples shall not exceed 10 % of the greater of the breaking forces measured 2) complying with clause In the case of strap samples conditioned in The restraining device shall not accordance with , , and the average contain dyes, plasticizers or any other substance that can be extracted in sufficient quantities that breaking force of the straps shall be not less injury may be caused to the occupant of the carry than 75 % of the average of the forces determined in the test described in and not less than 3.6 kN cot The difference between the breaking forces of the While undergoing the two samples shall not exceed 10 % of the greater of static test described in , the carry cot the breaking forces measured incorporated in a group B device shall support the NOTE One or more of these tests may be dispensed with if the force specified There shall be no intrusion of the composition of the material, or information already available, survival space as indicated by a deformation of more renders the test or tests superfluous than 10 mm into the plasticine on the body form shown in Figure Separate, unused devices shall be tested for compliance with The buckle(s) shall be so positioned tested in accordance with that it/they can be released with either hand by an the device shall When withstand the appropriate force as adult It shall be possible to adjust the restraint so shown below without deformation of the plasticine that the buckle(s) lie against the ends or the on the body form (see ) The test shall be forward-facing side of the carry cot and its/their carried out at a temperature of 20 ± ° C intention and operation are immediately obvious to a) a rescuer in an emergency 1) Group A: 4.3 kN; The buckle shall be released by 2) Group B: kN + (0.2 × mass of carry cot in pressing either a button or a similar device The kg) kN surface to which this pressure is applied shall have, in the position of actual unlocking: b) If it forms a separate device, the seat restraining device shall a) for enclosed devices, an area of not less withstand a tension test of 6.2 kN when tested than 4.5 cm2 and a width of not less than 15 mm; statically as a seat restraining device, but if the b) for non-enclosed devices, an area of not less carry cot restraint anchorage points are than 2.5 cm2 and a width of not less than 10 mm incorporated in it, the test shall be carried out The buckle release device shall be coloured red No at 10.5 kN other part of the buckle shall be of this colour All parts shall be free from burrs and During the test the horizontal angle made by sharp edges and shall, if metal, show no base metal the front face of the body form with respect to the corrosion when tested in accordance with transverse axis of the test seat shall not exceed 20° about a vertical axis (angle µ in Figure 1) When tested in accordance with the buckle shall withstand a test force of 2,2 kN After being subjected to the tests, the buckle shall be capable of functioning satisfactorily Pe rformance 3.3.1 No-tension test General 3.3.2 3.3.2 4.4.2 3.3.4 Attachment and release of components S trap s 5.1 C.1 3.3.3 5.2 Toxicity C.2 C.3 C.4 C.5 C.1 3.3.4 Carry cot integrity B Pe rformance Te st samp le s Buckle s and rigid p arts 6.2 Ge ne ral S tatic te st B 3.3.4 Groups A and B: Buckle re le ase Seat restraining device Asse ssme nt Finish A Buckle te st 4.4.1 Force test Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy A © BSI 02-2000 BS AU 186a:1983 Figure — Body form for use with static strength test © BSI 02 - 000 Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy BS AU 86a: 983 6.3 in On completion of each of the tests described B no total failure of any component shall have f) the need to replace the device when it has been used in a severe accident or when the straps occurred, no load bearing component shall have show signs of fraying or having been cut; become separate from its mating part and the g) a general warning to the user of the danger of securing buckle(s) shall be capable of normal use 6.3 On completion of the test described in B , the total amount of slip of the strap through any buckle or adj usting device shall not exceed 25 mm for any one buckle or adj usting device 6.3 h) a warning that the device should not be used without the seat restraining device [which should be arranged to restrain any folding arm After completion of the test described in the buckle(s) shall be tested as specified in making any alterations or additions to the device without the approval of the manufacturer; B , B for the force required to release it/them This force shall not exceed 90 N The button(s) or similar operating device(s) shall be capable of withstanding this force rest(s)] ; j ) a warning that, as the vehicle seat restraining device is designed only to limit the forward movement of the seat back, in the event of an accident it may not withstand the increased without distortion loading caused by loose articles striking the back Releasing the buckle(s) shall enable the carry cot to of the seat; be released immediately k) where an internal harness is not provided, the carry cot should be used with its cover in place Instructions for use Every carry cot restraining device shall be l) a recommendation that the child’s head should be towards the centre of the vehicle accompanied by instructions with the following content: Marking a) the correct method of attachment of the device Each device shall be clearly and indelibly marked to the vehicle with particular regard to the with the following: anchorage being on a suitable part of the vehicle structure which shall be reinforced if necessary; b) the method of operating the buckle(s); c) the method of operating the adj usting device; a) the number of this British Standard, i e BS AU 86a 1) ; b) the name, trade mark or other means of identification of the manufacturer; d) the intended location of the buckle(s); c) a statement to the effect that the mass of the e) the recommended methods of cleaning the occupant of the carry cot with which the device is straps; intended to be used shall be not greater than kg 1) Marking BS AU 86a on or in relation to a product is a claim by the manufacturer that the product has been manufactured to the requirements of the standard The accuracy of such a claim is therefore solely the manufacturer’s responsibility Enquiries as to the availability of third party certification to support such claims should be addressed to the Director, Quality Assurance Division, BSI, Maylands Avenue, Hemel Hempstead, Hefts HP2 4SQ for certification marks administered by BSI or to the appropriate authority for other certification marks Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy © BSI 02- 2000 BS AU 86a: 983 Ap p endix A Te st p roce dure s for Ap p endix B Test p rocedure s for the hardware device A C orrosio n re sistance B S tatic stre ngth of the de vice The apparatus consists of a non-metallic container of sufficient size to prevent masking of the components being tested Batch the samples in groups of identical finishes or identical predominant finishes where more than one finish is used on a component Test the batches separately Prepare the solution by dissolving 10 parts by mass of sodium chloride in 90 parts of distilled water The salt shall be substantially free of nickel and copper and contain on the dry basis not more than 0.1 % of sodium iodide and not more than 0.3 % of total impurities Place the parts to be tested in a boiling salt solution ( ) for a period of 15 min, then remove them and immediately drop them into a similar salt solution at a temperature of 20 ± °C After a period of not more than min, remove them and, without wiping off, leave them to dry for 24 h at a temperature of 20 ± °C A Tes t ap p aratus A Tes t sam p les A Salt solution A Procedure A A Buckle te st This is a tension test applied through the strap on to the buckle The test shall be carried out on a machine rated as grade A complying with BS 1610 and of a capacity such that the load specified for the buckle under test shall be not less than 10 % of the capacity of the machine range The machine shall be either a constant rate of loading machine, the rate being such that the time taken to reach the specified breaking force is 60 ± 10 s or a constant rate of traverse machine at a rate of 110 mm/min If the strap slips or breaks at the machine grip at a force less than the appropriate test force on the buckle, the result of that test shall be discarded Attach the device to a test machine in a manner that is in accordance with the supplier’s general fitting instructions Adjust the straps such that, under a preload of 100 N the front face of the body form is within ± 5° of the transverse axis of the test seat and, at point T, lies within 350 mm to 400 mm forward of a junction between the nominal seat squab and the seat cushion Apply the force to the device by use of the body form having the dimensions shown in Figure 1, the rate of force application being such as to cause movement of the body form at a rate of not more than 100 mm/min Apply the force horizontally in a forward direction in such a manner that the body form is free to rotate about a vertical axis through P Attach the seat restraining device to the standard car seat back (see Figure 2) in accordance with the supplier’s general fitting instructions Apply the test force horizontally in a forward direction B Carry co t restraining dev ice B Vehicle seat restraining dev ice B Buckle re le ase te st After the test for static strength of the assembly described in reduce the force on the device to zero and apply a dead force of 180 N Whilst maintaining this force measure the buckle release force If the assembly contains two buckles, the buckle closest to the point P shall be tested first Either the body form shall be locked so that it cannot rotate further about P or the dead force shall be removed, the first buckle reconnected, artificially if necessary, the dead force reapplied and then the second buckle tested Apply the buckle release force by a spring balance or other force measuring device in a manner and direction typical of that which would normally be applied Apply the force at least mm from the edge of the push button access opening in such a manner as to produce the maximum releasing effect B NOTE Care should be taken to ensure that the release force measured is only that which is required to operate the buckle release © BSI 02-2000 Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy BS AU 86a: 983 Material: frame of steel to BS 449- and rods of 055M1 steel, as rolled, to BS 970- All dimensions are in millimetres NOTE All the holes have a diameter of 32 mm NOTE The frame should be strong enough to support the applied force (see 6.2 ) Figure — E xamp le of stand ard car se at b ack for te sting se at re straining d e vice Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy © BSI 02- 2000 BS AU 86a:1 983 Appendix C Environmental conditioning C.4 Heat conditioning Keep the sample for h in a heated cabinet in an atmosphere having a temperature of 60 ± °C and a C.1 Room conditioning relative humidity of 65 ± % Determine the breaking force within of the sample’s removal Keep the sample strap for a minimum of 24 h in an atmosphere having a temperature of 20 ± °C and a from the heating cabinet relative humidity of 65 ± % If the test is not C.5 Exposure to water carried out immediately after conditioning, place Keep the sample fully immersed in distilled water, the sample in a hermetically sealed receptacle until at a temperature of 20 ± 50 °C, to which a trace of the test begins Determine the breaking force wetting agent has been added within of the strap’s removal from the NOTE Any wetting agent suitable for the fibre under test may conditioning atmosphere or receptacle be used C.2 Light exposure conditioning Determine the breaking force within 10 of the strap’s removal from the water C.2.1 The test conditions of section B02 of BS 1006 shall apply Expose the sample to light for the time necessary to produce fading of Standard Blue Dye Appendix D Test of breaking strength No to a contrast equal to grade on the grey scale of straps (static test) C.2.2 After exposure, condition the sample further D.1 Carry out the test each time on two new sample conditioned as specified in C.1 before test pieces of strap, of sufficient length, conditioned in accordance with one of the provisions of Appendix C C.3 Cold conditioning D.2 Grip each sample piece of strap between the C.3.1 Keep the sample for a minimum of 24 h in an atmosphere having a temperature of 20 ± °C and a clamps of a tensile-testing machine The clamps relative humidity of 65 ± % shall be so designed as to avoid breakage of the strap at or near the point of contact with the clamps C.3.2 Keep the sample for " h on a plane surface The speed of traverse shall be about 100 mm/min in a low temperature chamber in which the air temperature is – 30 ± 50 °C Then fold the sample The free length of the sample between the clamps of the machine at the start of the test shall and load the fold with a mass of kg previously cooled to – 30 ± 50 °C When the sample has been be 200 ± 40 mm D.3 Increase the force until the strap breaks, and kept under load for 30 in the same low note the breaking force temperature chamber, remove the mass and determine the breaking force within of the D.4 If the strap slips or breaks at the point of sample’s removal from the low temperature contact with one of the clamps or within 10 mm of chamber either of them, the test shall be invalid and a new test shall be carried out on another sample © BSI 02-2000 Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy BS AU 186a:1983 Publications referred to BS 970, Sp ecificatio n for w rought steels for m echanical and allied engineering p urp oses BS 970- , General insp ection and testing p ro cedures and sp ecific req uirem ents for carb on, m anganes e, BS 006, Methods of test for co lour fastness of textiles and leather BS 449, Steel p late, BS 449- , sheet and strip Carb on steel p late, s heet and s trip BS 61 0, Metho ds for the load verification o f testing m achines BS 32 54, Seat b elt assem b lies for m oto r vehicles BS AU 57b, 2) carb on alloy and stainles s steels Children’s res training dev ices 2) 2) Referred to in the foreword only Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy © BSI 02 - 000 BS AU 186a:1983 BSI certification marks A licence to us e the Kitemark or “S afety Mark” on or in relation to a p roduct will b e granted to any manufacturer or p roducer who demons trates that he can and will b e ab le cons istently to make that p roduct to the requirements s p ecified in the Britis h S tandard H is cap ab ility of doing so is initially as s es sed b y ins p ection of his p roduction p roces s, quality control organization and tes t facilities, and b y indep endent tes ting of a samp le of the p roduct agains t all the criteria of the relevant s tandard The licensee is required to accep t, and to op erate in accordance with, a BS I s cheme of s up ervision and control which identifies the minimum level of quality control to b e exercised during manufacture and the tes ts to b e carried out on the comp leted p roduct BS I carries out unannounced ins p ection vis its to the manufacturer’s works and audit tes ting of the p roduct, and may withdraw the licence for any failure of the manufacturer to comp ly with the relevant s tandard or the requirements of the scheme of sup ervis ion and control The p resence of the mark on or in relation to a p roduct is an as s urance that the goods have b een p roduced under a s ystem of s up ervision, control and tes ting, op erated during manufacture and including p eriodical ins p ection of the manufacturer’s works in accordance with the certification mark s cheme of BS I Further p articulars may b e ob tained from the C ertification and Ass es s ment D ep artment, Britis h S tandards Institution, Maylands Avenue, H emel H emp s tead, H erts H P2 4S Q © BS I - 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