BRITISH STANDARD AUTOMOBILE SERIES BS AU 183:1983 Incorp orating C O NFI RME D APRI L 989 Specification for Passive seat belt systems UD C 62 1 42 : 61 862 Reprodu ced by I H S u n d er l i cen se wi th BSI - U n trol l ed Copy Am endm ent No BS AU 183:1983 Committees responsible for this British Standard This Britis h S tandard was p ub lis hed under the direction of the Automob ile S tandards C ommittee AUE /- Its p rep aration was entrusted to Technical C ommittee AUE /7 up on which the following b odies were rep resented: Automob ile As sociation C onsumer S tandards Advisory C ommittee of BS I C onsumers ’ Ass ociation D ep artment of Indus try, Mechanical E ngineering D ep artment of the E nvironment, Transp ort and Road Research Lab oratory D ep artment of Trans p ort Ins titute of H ous ing Man- made Fib res Producers ’ C ommittee Medical Res earch C ouncil Minis try of D efence Motor C ycle As sociation of Great Britain Motor Industry Research As s ociation National Automob ile S afety Belt As sociation Royal Automob ile C lub Royal S ociety for the Prevention of Accidents S ociety of Motor Manufacturers and Traders Limited Tap e and Web b ing Manufacturers’ Ass ociation Univers ity of Birmingham This Britis h S tandard, having b een p rep ared under the direction of the Automob ile S tandards C ommittee, was p ub lis hed under the authority of the Board of BS I and Amendments issued since publication comes into effect on Feb ruary 983 © BS I - 00 Amd No D ate of is s ue C omments 4485 Feb ruary Indicated b y a s ideline in the margin 984 The following BS I references relate to the work on this s tandard: C omm ittee reference AUE /7 D raft for com ment 81 /75 D C ISBN 580 13165 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 183:1983 Contents Page Committees responsible Foreword Inside front cover ii Scope Definitions Performance requirements Tests Deployment systems 11 Installation requirements 11 Instructions 11 Marking Appendix A Manikin 12 13 Appendix B Corrosion test 20 Appendix C Abrasion and micro- slip test arrangements 21 Appendix D Dual release device test arrangement 24 Appendix E Apparatus to test locking of emergency locking retractors 24 Appendix F Dust resistance test apparatus 25 Appendix G Trolley, seat, anchorages and stopping device 26 Appendix H Deceleration curve 30 Appendix J Fitting instructions 30 Figure — Side view of head, neck and torso 16 Figure — Front view of head, neck and torso 17 Figure — Side view of hip, thigh and lower leg 18 Figure — Front view of hip, thigh and lower leg 18 Figure — Principal dimensions 19 Figure — Manikin seated in position shown in Appendix G, Figure 19 Figure — Examples of type test arrangements corresponding to the type of adj usting device 21 Figure — Type test 22 Figure — Type test and micro- slip test 23 Figure — Dual release test arrangement 24 Figure 1 — Example of an apparatus to test locking of emergency locking retractors 24 Figure — Example of an apparatus for dust resistance tests 25 Figure — Trolley, seat and anchorages 27 Figure — Stopping device assembly 28 Figure — Stopping device (polyurethane tube) 28 Figure — Stopping device (olive- shaped knob) 29 Figure — Curve of trolley’s deceleration as function of time 30 Table — References, names, materials and principal © 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 dimensions of the components of the manikin 15 Table — Mass of head, neck, torso, thighs and lower leg 15 Publications referred to 32 i BS AU 83 : 983 Fore word This British Standard has been prepared under the direction of the Automobile Standards Committee and aligns with EEC Directive 77/541 /EEC, which covers seat belts and restraint systems of motor vehicles, where items are related 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 32, 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 83:1 983 Scope This British Standard specifies requirements for 2.3 deployment system passive seat belt systems which are intended for a device or series of devices that are primarily separate use, i e as individual fittings, by persons of provided to move the restraining straps to and from adult build occupying forward- facing seats of motor the correct wearing position vehicles, and which are intended to be attached to at 2.4 Straps least three anchorage points which comply with EEC Directives ECE 01 or 76/1 5/EEC, and where the entire restraint of the occupant is applied by means of webbing straps NOTE The titles of the publications referred to in this standard are listed on the inside back cover Definitions For the purposes of this standard the following definitions apply 2.1 Belts 2.1 2.4.1 restraining strap a flexible component designed to hold the body and to transmit stresses to the belt anchorages 2.4.2 deployment strap a strap that is not designed to transmit declaration loads in excess of 45 g n 2.5 active release device any release device other than an emergency release passive safety belt (seat belt, belt) device enabling the wearer to couple or uncouple the an assembly of straps with emergency release belt It may incorporate a belt adj usting device device and attachments and any deployment 2.6 system, which deploys automatically and requires no action by the occupant and is anchored to a power driven vehicle and is designed to diminish the risk of inj ury to its wearer in the event of collision or of abrupt vehicle deceleration, by limiting the mobility emergency release device a device that enables the wearer to be released from the belt independently of any deployment system incorporated of the wearer’s body Such an assembly is generally 2.7 referred to as a “belt assembly”, a term also belt adj usting device embracing any device for energy absorption or belt retraction a device enabling the belt to be manually adj usted according to the requirements of the individual 2.1 wearer and to the position of the seat The adj usting lap belt device may be either part of the release device, a belt that passes across the front of the wearer’s pelvic region 2.1 diagonal belt a belt that passes diagonally across the front of the chest, from the hip to the opposite shoulder 2.1 three-point belt any belt assembly that is anchored at three points and is a combination of a lap belt and a diagonal belt 2.2 belt type retractor or any other part of the safety belt 2.8 attachments parts of the belt assembly, excluding the deployment straps but including the necessary securing components, which enable it to be attached to the belt anchorages and which are intended to transmit any or all of the stresses to such anchorages 2.9 energy absorber a device designed to dissipate energy independently of, or j ointly with, the restraining straps and a category of belts which not differ in such forming part of a belt assembly essential respects as: 2.1 Retractors a) rigid parts (release devices, attachments, retractor, etc ); b) the material, weave, dimensions and colour of the straps; c) the geometry of the belt assembly 2.1 0.1 retractor a device for accommodating a part or the whole of the restraining strap of a safety belt Additionally it may accommodate part or the whole of the deployment strap © 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 83:1 983 2.1 0.2 2.1 non-locking retractor vehicle type a retractor from which the strap is extracted to its a category of power- driven vehicles which not full length by a small external force and which differ in such essential respects as the dimensions, allows of no adj ustment of the strap which has been lines and constituent materials of the components of extracted the vehicle structure or seat structure or any other 2.1 0.3 manually unlocking retractor fitted to restraining straps, a retractor requiring the manual operation of a device by the user to unlock the retractor in order to obtain the desired strap extraction and which locks automatically when the said operation ceases 2.1 0.4 automatically locking retractor a retractor allowing extraction of the strap to the desired length and, when the release device is fastened, automatically adj usting the strap to the wearer Further extraction of the strap is not part of the vehicle to which the safety belts and the restraint systems are attached including means/parts associated with passive belt deployment 2.1 restraint system a system combining a seat, fixed to the structure of the vehicle by appropriate means, and a safety belt for which at least one anchorage is located on the seat structure 2.1 seat a structure, which may or may not be integral with possible without deliberate action on the part of the the vehicle structure complete with trim, intended wearer to seat one adult person The term covers both an 2.1 0.5 emergency locking retractor a retractor which, in normal driving conditions, does not restrict the freedom of movement of the wearer individual seat and part of a bench seat intended to seat one person 2.1 adj ustment system of the safety belt It has a length adj usting device the device by which the seat or its parts can be which automatically adj usts the restraining strap to adj usted to a position suited to the morphology of the wearer, may include means associated with the seated occupant This device may, in particular, deployment of the passive belt and has a locking allow: mechanism actuated in an emergency by: a) deceleration of the vehicle, extraction of the strap relative to the retractor or any other automatic means (single sensitivity); or b) any combination of these factors (multiple sensitivity) 2.1 emergency locking device a device which, in normal driving conditions, does not restrict the freedom of movement of the wearer of the safety belt It has a locking mechanism a) longitudinal displacement; b) vertical displacement; c) angular displacement 2.1 seat anchorage the system by which the seat assembly is secured to the vehicle structure, including the affected parts of the vehicle structure 2.1 displacement system actuated in an emergency by extraction of the strap a device enabling the seat or one of its parts to be relative to the device, it may be capable of unlocking displaced angularly or longitudinally, without a after emergency activation Such a device may or fixed intermediate position, to facilitate passenger may not be incorporated into a retractor access 2.1 2.1 belt anchorages locking system the fixed parts of the vehicle structure or seat a device ensuring that the seat and its parts are structure or any other fixed part of the vehicle to maintained in any position of use which the load transmitting parts of the passive safety belts are secured when deployed 2.20 disabling mechanism a device that deactivates the retractor locking mechanism to facilitate entry and exit from the vehicle 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 83:1 983 3.2.2 2.21 recessed release device push-button Release devices 3.2.2.1 The device shall be so designed as to a push- button that cannot be activated to release preclude any possibility of incorrect use This the device by a sphere having a diameter of 40 mm means, inter alia, that it shall not be possible for the release device to be left in a partially- closed 2.22 non-recessed release device push-button a push- button that can be activated to release the device by a sphere having a diameter of 40 mm Performance requirements position The procedure for opening the release device shall be obvious both to the wearer and to a rescuer Wherever the release device is likely to be in contact with the wearer, the width of its contact surface shall not be less than 46 mm 3.2.2.2 A release device, even when not under load, 3.1 General The belt or the restraint system shall shall remain closed, whatever its position It shall be so designed and constructed that, when correctly not be possible to release any active release device installed and when properly used by an occupant, it with a force of less than N It shall not be possible will operate satisfactorily and reduce the risk of to release the emergency release device with a force bodily inj ury in the event of an accident of less than N (or with an acceleration of 60 3.2 Rigid parts any direction at an on- set rate of at 3.2.1 General 3.2.1 No part of the safety belt shall have sharp edges liable to cause wear or breakage of the straps by chafing 3.2.1 All parts of the belt assembly liable to be affected by corrosion shall be suitably protected After undergoing the corrosion test specified in 4.1 , neither signs of deterioration likely to impair the proper functioning of the device nor any significant corrosion shall be visible to the unaided eye of a qualified observer 3.2.1 Rigid parts intended to absorb energy or to be subj ected to or to transmit a load shall not be fragile 3.2.1 Every care shall be taken that rigid items least 000 g n/s g n in for a period of at least ms) A release device shall be so designed as to be easy to use and to grasp It shall be capable of being released when tested as specified in 4.7 A release device shall be released by pressing either a button or a similar device The proj ection of the surface to which this pressure is applied shall have, in the position of actual unlocking and in a plane perpendicular to the initial movement of the button: a) for enclosed devices, an area of not less than cm2 and width of not less than mm; b) for non- enclosed devices, an area of not less than cm and a width of not less than mm This area shall be coloured red No other part of a release device shall be of this colour and plastic parts of a safety belt are so located and In cases where the centreline of the release device is installed that, when a power- driven vehicle is in located more than 200 mm above the R point it shall normal use, they cannot become trapped under a not be possible to release the emergency release sliding seat or in a door of the vehicle However, device by applying a force of 60 N to the release where there is a possibility that a part does not meet button through a sphere of diameter 00 mm the above requirement, it shall be subj ected to the 3.2.2.3 A release device shall be capable of cold impact test specified in 4.4.4 After test, if any withstanding repeated operation and, before the visible cracks are present in the plastics covers or dynamic test specified in 4.6 , shall undergo 00, in retainers of rigid items, these plastics parts shall be the case of an emergency release device, or 000, in removed and the remaining assembly shall then be the case of an active release device, opening and checked for its continued security If the remaining closing cycles in conditions of normal use assembly is still secure, or if no visible cracks are present, the assembly shall be checked again and shall meet the requirements of 3.2.2 and 3.4 3.2.2.4 A release device, when tested in accordance with 4.4.3 shall operate normally 3.2.2.5 The force required to open a release device in the test specified in 4.7 shall not exceed 60 N 3.2.2.6 A release device shall be tested for strength in accordance with the requirements of 4.4.1 and 4.4.5 , as appropriate It shall not break, be seriously distorted or become detached when subj ected to the specified load © 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 83 : 983 3.2.2.7 In the case of release devices that In each of the tests mentioned in 3.2.4.2.3 incorporate a component common to two assemblies, and 3.2.4.2.2, 3.2.4.2.1 the amount of strap movement and if the release device of one assembly can, in use, occurring before the retractor locks shall not be fitted to the mating part of either that assembly exceed 50 mm, starting at the length specified or the other assembly, the strength and release tests in 4.5.2.1 specified in of 3.2.4.2.1 4.6 and 4.7 shall be carried out for both possibilities In order to comply with the requirements b), a retractor shall be considered as satisfactory if, at the strap acceleration values Attachm ents (as defined in ) Attachments shall be tested for strength in accordance with the requirements of 4.4.1 and 4.4.2 They shall neither specified, it does not lock until at least the first 50 mm of strap has been unwound, starting at the length specified in 4.5.2.1 break nor become detached when subj ected to the 3.2.4.2.4 specified load retracting force of the strap shall be not less 3.2.4 Retractors General than N when measured in the free length between the manikin and the retractor, in accordance Retractors shall fulfil the requirements specified in strength specified in 4.4.1 3.2.4.2 and and the tests for 4.4.2 If the retractor is part of a diagonal pulley, the retracting force shall be measured in the free length between the manikin and the guide or satisfy the following conditions when tested in pulley If the assembly incorporates a device which, 4.5.2 upon manual or automatic operation, prevents the a) It shall have locked when the vehicle deceleration reaches a value of 45 4.5 measured If the strap passes through a guide or An emergency locking retractor shall accordance with with strap, the retracting force of the strap shall be not less than N and not more than N when similarly Em ergency locking retracto rs 3.2.4.2.1 If the retractor is part of a lap belt only, the strap from being completely retracted, such a device n g shall not be operated when the retracting force is b) It shall not lock at strap accelerations, assessed measured in the direction of the extraction, of less m easurem ent in the m anner sp ecified ab o ve shall than n g Designs w hich not allow for achieve the eq uivalent effect c) It shall not lock when its sensing device is tilted 3.2.4.2.5 to angles of ° or less in any direction from the retractor and allowed to retract repeatedly in installation position specified by its accordance with the method specified in manufacturer until 40 000 cycles of withdrawal and retraction d) It shall lock when its sensing device is tilted to have been completed The retractor shall then be angles of 27 ° or more in any direction from the subj ected to the corrosion test specified in installation position specified by its followed by the dust resistance test specified manufacturer in 4.5.3 The strap shall be withdrawn from the 4.5.1 4.1 It shall then satisfactorily complete a further 000 cycles of withdrawal and retraction, e) In cases where the emergency locking of a retractor depends on an external signal, or power source, the design shall ensure that the retractor after which it shall still meet the requirements of 3.2.4.2.1 , 3.2.4.2.2, 3.2.4.2.3 and 3.2.4.2.4 locks automatically upon failure or interruption After the above tests, the retractor shall still of that signal or power source function correctly and stow the strap efficiently How ever, it shall If a “disabling” mechanism is incorporated b e p ossib le to ov erride locking under such failure 3.2.4.2.6 or interrup tion other than w hen the s eat b elt is into the locking device, the action of this mechanism b eing actuated during an em ergency shall be incorporated into each cycle of the test 3.2.4.2.2 When tested in accordance with 4.5 2, an emergency locking retractor with multiple 3.2.5 sensitivity, one of which is strap sensitivity, shall, in addition to meeting the requirements of 3.2.4.2.1 , lock when the strap acceleration is at least measured in the direction of the extraction specified in g n 3.2.4.2.5 Belt adjusting device 3.2.5.1 Two samples of each belt adj usting device shall be tested in accordance with the requirements of 4.3 The strap slip shall not exceed 25 mm for each sample of adj usting device and the sum of displacements of all the adj usting devices of a belt shall not exceed 40 mm 3.2.5.2 All adj usting devices shall be tested for strength in accordance with 4.4.1 They shall neither break nor become detached when subj ected to the specified load 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 83 : 983 When tested in accordance with , the force required to operate any manual device shall not exceed 50 N Strength after abrasion procedure Two samples shall be conditioned in accordance with and the breaking load shall be assessed in accordance with either or as appropriate and The breaking Restraining straps load shall be at least equal to 75 % of the average of The characteristics of the the breaking loads determined during tests on straps shall be such as to ensure that their pressure unabraded straps, and not less than the minimum on the wearer’s body is distributed as evenly as load specified for the items being tested The possible over the whole width and that they not difference between the breaking loads of the two twist, even under load They shall have samples shall not exceed 20 % of the greater of the energy-absorbing and energy-dispersing capacities breaking loads measured The width of the strap under a load The items to be subjected to an abrasion of 980 daN shall not be less than 46 mm This procedure and the procedures to be followed shall be dimension shall be measured during the as indicated in the following table A new sample breaking-strength test specified in , and shall be used for each procedure without stopping the machine In the case of the two strap samples conditioned in accordance Attachment — — × with , the breaking load of the strap, — × — Guide or pulley determined in accordance with , shall be not — × × Buckle-loop less than 470 daN The difference between the Adjusting device × × × breaking loads of the two samples shall not Parts sewn to the exceed 10 % of the greater of the breaking loads strap — — × measured In the case of the two strap samples conditioned in accordance with any one of the provisions of The belt assembly or restraint system (except and ), the breaking load of the shall be subjected to a dynamic test in accordance strap shall be not less than 75 % of the average of with the loads determined in the test referred to in and not less than 470 daN Belt assembly NOTE One or more of these tests may be dispensed with if the Except in the case of restraint systems, the composition of the material used, or information already dynamic test shall be performed on two belt available, renders the test or tests superfluous assemblies which have not previously been under Deployment straps load In the case Before the dynamic test is performed the belt of the two strap samples conditioned in accordance assemblies shall be tested as follows with , the difference between the breaking a) The release devices of the belt assemblies shall loads of the two samples shall not exceed 10 % of the withstand: greater of the breaking loads measured 1) in the case of emergency release devices: 100 In the opening/closing cycles; case of the two strap samples conditioned in accordance with any one of the provisions of 2) in the case of active release devices: 000 (except and ), the breaking load of the opening/closing cycles in conditions of normal strap shall be not less than 75 % of the average of use ( ) the loads determined in the test referred to b) Retractors shall be tested for durability in the in following manner NOTE One or more of these tests may be dispensed with if the 1) The strap shall be withdrawn from the composition of the material used, or information already retractor and allowed to retract repeatedly in available, renders the test or tests superfluous accordance with until 40 000 cycles of withdrawal and retraction have been completed ( ) 2) The belt assembly shall be subjected to the corrosion test specified in ( ) 3.2.5.3 4.4.6 3.3.3 3.3.3.1 4.2.1 3.3.1 3 S trap s 3.3.2.1 3.3.1 3.3.1 Characteristics 3.3.1 Width 4.2.2 3.3.3.2 4.2.2 3.3.1 Strength after room-conditioning Typ e Typ e Typ e p ro ce d u re p ro ce d u re p ro ce d ure 4.2.1 4.2.2 3.3.1 Strength after special conditioning Be lt asse mb ly o r re straint syste m: re quire me nts for d ynamic te sting 4.2.1 4.2.1 3.4.1 4.2.1 General 4.6 3.3.1 3.4.2 3.4.2.1 3.3.2 3.3.2.1 Strength after room-conditioning 4.2.1 3.3.2.2 Strength after special conditioning 4.2.1 4.2.1 4.2.1 3.2.2.3 3.3.2.1 4.5 3.2.4.2.5 4.1 © 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 3.2.4.2.5 BS AU 83 : 983 3) The belt assembly shall be subjected to the dust resistance test specified in ( ) 4) The belt assembly shall be subjected to a further 000 cycles of withdrawal and retraction as specified in item b) 1) c) The release devices shall be subjected to a further test: 1) in the case of emergency release devices: 10 opening/closing cycles; 2) in the case of active release devices: 500 opening/ closing cycles in conditions of normal use ( ) d) The deployment system shall be tested in accordance with No part of a belt assembly or a restraint system securing the occupant shall break and no release device or locking or displacement system shall unlock The forward displacement of the manikin shall be between 80 mm and 200 mm at pelvic level in the case of lap belts In the case of other types of belts, the forward displacement shall be between 80 mm and 200 mm at pelvic level and between 100 mm and 300 mm at chest level 4.5 3.2.4.2.5 3.2.2.3 5.1 3.4.2.2 3.4.2.3 NOTE These displacements are the displacements in relation to the measurement points shown in Appendix A, Figure Restraint system If movement of the chest reference point exceeds that specified in it shall be shown, either by calculation or by a further test, that no part of the torso or the head of the manikin used in the dynamic test would have come into contact with any forward rigid part of the vehicle, apart from contact of the chest with the steering assembly, if the latter meets the requirements of Directive 74/297/EEC and provided that contact does not occur at a speed higher than 24 km/h For this assessment, the seat shall be considered to be in the position specified in In the case of a two-door vehicle, the displacement and locking systems enabling the occupants of the rear seats to leave the vehicle shall still be operable by hand after the dynamic test 3.4.3 3.4.3.1 3.4.2.3 6 3.4.3.2 Te sts C orrosion te st A complete safety belt assembly shall be positioned in a test chamber as specified in Appendix B In the case of an assembly incorporating a retractor, the strap shall be unwound to full length, less 300 ± mm Except for short interruptions that may be necessary, e.g for checking and replenishing the salt solution, the exposure test shall proceed continuously for a period of 50 h In the case of passive restraints, only those parts intended to be permanently attached to loadbearing parts shall be treated in accordance with On completion of the exposure test, the assembly shall be gently washed or dipped in clean running water at a temperature not exceeding 38 °C, so as to remove any salt deposit that may have formed, and then allowed to dry at room temperature for 24 h before being inspected in accordance with Separable parts comprising the deployment system which include electrical components shall not be washed or dipped but allowed to dry for 24 h at room temperature 4.1 4.1 3.2.1 Bre aking stre ngth te st 4.2.1 Conditioning of straps for the breaking Appropriate samples cut from the strap shall be conditioned as follows The strap shall be kept for a minimum of 24 h in an atmosphere having a temperature of 20 ± °C and a relative humidity of 65 ± % If the test is not carried out immediately after conditioning, the sample shall be placed in a hermetically sealed receptacle until the test begins The breaking load shall be determined within of the strap’s removal from the conditioning atmosphere or receptacle strength test 4.2.1 Room-conditioning 4.2.1 Light-conditioning The requirements of Section B.02 of BS 1006 shall apply The strap shall be exposed to light for the time necessary to produce fading of Standard Blue Dye No to a contrast equal to grade four on the grey scale After exposure, the strap shall be kept for a minimum of 24 h in an atmosphere having a temperature of 20 ± °C and a relative humidity of 65 ± % The breaking load shall be determined within of the sample’s removal from the conditioning installation 4.2.1 2.1 4.2.1 2.2 4.2.1 Cold-conditioning The strap shall be kept for a minimum of 24 h in an atmosphere having a temperature of 20 ± °C and a relative humidity of 65 ± % 4.2.1 3.1 4.1 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 83 : 983 Ap p e ndix B C orrosion test B Te st ap p aratus The apparatus shall consist of a mist chamber, a salt solution reservoir, a supply of suitably conditioned compressed air, one or more atomizing nozzles, sample supports, provision for heating the chamber and the necessary means of control Each sample shall be so placed as to prevent salt solution dripping from one sample to another B B S alt solution The salt solution shall be prepared by dissolving ± parts by mass of sodium chloride in 95 parts of distilled water The sodium chloride shall be substantially free from nickel and copper and contain in the dry state not more than 0.1 % of sodium iodide and not more than 0.3 % of impurities NOTE The size and constructional details of the apparatus are in total optional, provided that the test conditions are met The solution shall be such that when atomized It shall be ensured that: at 35 ° C the collected solution is in the pH range a) drops of solution accumulated on the ceiling or of 6.5 to 7.2 cover of the chamber not fall on test samples; and The compressed air supply to the nozzle or nozzles b) drops of solution which fall from test samples for atomizing the salt solution shall be free from oil are not returned to the reservoir and then and impurities, and maintained at a pressure of atomized again between 70 kN/m2 and 170 kN/m2 The apparatus shall not be constructed of materials which affect the corrosiveness of the mist The exposure zone of the mist chamber shall be maintained at 35 ± °C At least two clean mist collectors shall be placed within the exposure zone Samples, except retractors, shall be supported to drops of solution from the test samples or or suspended between 15 ° and 30° from the vertical anyprevent other source from accumulating The collectors and preferably parallel to the principal direction of shall be placed near the test samples, one as near as horizontal flow of mist through the chamber, as possible to the nozzles and the other as far away as determined, in relation to the dominant surface possible from the nozzles The mist shall be such being tested that, for each 80 cm2 of horizontal collecting area, Retractors shall be supported or suspended in an average of between 1.0 mL and 2.0 mL of such a manner that the axes of the reels for storing solution per hour is collected in each collector when the strap are normal to the principal direction of measured over at least 16 h horizontal flow of mist through the chamber The nozzle or nozzles shall be directed or strap opening in the retractor shall also be facing baffledThe in such a manner that the spray does not this principal direction strike directly on to the test samples Each sample shall be so placed as to permit the mist to settle freely on all samples B B B B B Air sup p ly B B C ond itio ns in the mist chamb e r B Location of te st samp le s in the mist B cab ine t B B B B 20 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 83:1 983 Appendix C Abrasion and micro-slip test arrangements Figure — Examples of type test arrangements corresponding to the type of adj usting device © 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 21 BS AU 183:1983 Figure — Type test 22 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 83:1 983 Figure — Type test and micro-slip 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 23 BS AU 83 : 983 Ap p e ndix D D ual release de vice test Ap p endix E Ap p aratus to te st locking arrange ment of eme rge ncy locking retractors A suitable apparatus is illustrated in Figure 1 and consists of a motor- driven cam, the follower of which is attached by wires to a small trolley mounted on a track The cam follower incorporates a “lost motion” device which absorbs any movement should the reel lock before the full stroke of the follower is completed The cam design and motor speed combination is such as to give the required acceleration at a rate of increase of acceleration as specified in 4.5.2.4, and the stroke is arranged to be in excess of the maximum permitted strap movement before locking On the trolley a carrier is mounted which can be swivelled to enable the retractor to be mounted in varying positions relative to the direction of movement of the trolley When testing retractors for sensitivity to strap movement, the retractor is mounted on a suitable fixed bracket and the strap is attached to the trolley When carrying out the above tests any brackets, etc supplied by the manufacturer or by his representative are to be incorporated in the test installation to simulate as closely as possible the intended installation in a vehicle Any additional brackets, etc , that may be required to simulate the installation as intended in a vehicle are to be provided by the manufacturer or by his representative Figure — D ual re le ase te st arrange me nt (see 4.4.5) Figure 1 — E xamp le o f an ap p aratus to te st lo cking of e me rge ncy locking re tractors 24 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 183:1983 Appendix F Dust resistance test apparatus Figure 12 — Example of an apparatus for dust resistance tests © 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 25 BS AU 83 : 983 Appendix G Trolley, seat, anchorages and stopping device G Trolle y For tests on safety belts the trolley, carrying the seat only, shall have a mass of 400 ± 20 kg For tests on restraint systems the trolley, with the vehicle structure attached, shall have a mass of 800 kg However, if necessary, the total mass of the trolley and vehicle structure may be increased by increments of 200 kg In no case shall the total mass differ from the nominal value by more than ± 40 kg G Se at Except in the case of tests on restraint systems, the seat shall be of rigid construction and present a smooth surface The particulars given in Figure 13 shall be respected, care being taken that no metal part can come into contact with the belt G Anchorage s The structure carrying the anchorages shall be rigid except in the case of anchorages forming part of the vehicle structure The upper anchorage shall not be displaced by more than 0.2 mm in the longitudinal direction when a load of 98 daN is applied to it in that direction The trolley shall be so constructed that no permanent deformation shall occur in the parts bearing the anchorages during the test G Stop ping device The stopping device shall meet the requirements given in Appendix H (Figure 17) A suitable device is described below, but any other device giving equivalent results can be accepted This device (see Figure 14) consists of two identical absorbers mounted in parallel, except in the case of restraint systems when four absorbers shall be used for a nominal mass of 800 kg If necessary, an additional absorber shall be used for each 200 kg increase of nominal mass Each absorber comprises: an outer casing formed from a steel tube; a polyurethane energy-absorber tube; a polished steel olive-shaped knob penetrating into the absorber; a shaft and an impact plate The dimensions of the various parts of this absorber are shown in Figure 14, Figure 15 and Figure 16 The characteristics of the absorbing material are given in Immediately before each test the tubes are maintained for a minimum of 12 h at a temperature of between 15 °C and 25 °C without being used During the dynamic testing of safety belt assemblies, the stopping device has to be at the same temperature as that during the calibration test ± °C G C haracte ristics of the ab sorb ing mate rial (ASTM method D 735 unless otherwise stated) Shore hardness A: 95 ± at 20 ± °C Breaking strength: Ro W 343 daN/cm2 Minimum elongation: Ao 400 % Modulus: at 100 % elongation: 108 daN/cm2 at 300 % elongation: 235 daN/cm Low-temperature brittleness (ASTM method D 736): h at – 55 °C Compression set (method B): 22 h at 70 °C u 45 % Density at 25 °C: 1.95 to 1.10 Ageing in air (ASTM method D 573): 70 h at 100 °C shore : maximum hardness A variation ± breaking : decrease < 10 % strength of Ro elongation : decrease < 10 % of Ao mass : decrease < % Immersion in oil (ASTM method No Oil): 70 h at 100 °C shore : maximum hardness A variation ± breaking : decrease < 15 % strength of Ro elongation : decrease < 10 % of Ao volume : swelling < % Immersion in oil (ASTM method No Oil): 70 h at 100 °C breaking : decrease < 15 % strength of Ro elongation : decrease < 15 % of Ao volume : swelling < 20 % Immersion in distilled water: week breaking : decrease < 35 % at 70 °C strength of Ro elongation : increase < 20 % of Ao G 26 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 83 : 983 Figure — Trolley, se at and anchorage s © 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 27 BS AU 83:1 983 Figure — Stopping device assembly Figure — Stopping device (polyurethane tube) 28 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 83:1 983 Figure — Stopping device (olive-shaped knob) © 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 29 BS AU 183:1983 Appendix H Deceleration curve Figure 17 — Curve of trolley’s deceleration as function of time (curve for testing stopping devices) The deceleration curve of the trolley loaded with NOTE inert masses to produce a total of 455 mounting should not distort readout data Consideration should safety belt tests and 91 ± 20 kg for ± 40 kg for tests Mechanical resonances associated with transducer be given to the effect of cable length and temperature on frequency response incorporating the vehicle structure where the NOTE nominal mass of the trolley and vehicle structure frequency class 60 specified in ISO 6487 is 800 kg, shall remain within the hatched area of Figure If necessary, the nominal mass of the trolley and attached vehicle structure can be increased by increments of 200 kg, in which case an These requirements are in accordance with channel Appendix J Fitting instructions The instructions shall cover the following points additional inert mass of 28 kg shall be added per a) Installation instructions (not required if the increment In no case shall the total mass of the manufacturer supplies the vehicle with passive trolley, the vehicle structure and the inert masses seat belts already installed) which specify for differ from the nominal value for calibration tests by which vehicle types the assembly is suitable and more than the correct method of attachment of the assembly ± 40 kg The stopping distance during calibration of the trolley shall be 400 ± 20 mm In both the above cases the measurement to the vehicle, including a warning to guard against chafing of the straps equipment shall have a response which is substantially flat up to 60 Hz with a roll off at 00 Hz 30 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 183:1983 b) Instructions for use (these may be included in 2) the method of operating the emergency the vehicle user’s handbook if the manufacturer release device; supplies the vehicle with passive seat belts 3) the method of adj ustment, if any; already installed) comprising the instructions necessary to ensure that the user obtains the greatest benefit from the safety belt In these instructions reference should be made to: ) the correct manner of wearing the belt, and in particular: i) the need to fit without slack around the occupant when in use; ii) the need for the belt to be correctly deployed as indicated by any warning device; 4) the method of operating any retractor which is incorporated in the assembly and the method of checking that it has locked; 5) the recommended methods of cleaning the belt and reassembling it after cleaning where appropriate; 6) the need to replace the safety belt when it has been in use in a serious accident or shows signs of severe fraying or of having been cut; 7) the fact that the belt should not be altered or modified in any way since such changes may iii) the correct positioning of the straps and render the belt ineffective; in particular, where the need to avoid twisting them; the design permits parts to be iv) the fact that each belt should be used by instructions to ensure correct reassembly shall one occupant only and that a belt should not be given; dismantled, be put round a child seated on a passenger’s 8) the fact that the belt is intended for use by lap; occupants of adult build 31 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 183:1983 Publications referred to BS 006, Method of test for colour fastness of textiles and leather ASTM method D 573 ASTM method D 735 ASTM method D 736 ASTM method No Oil ASTM method No Oil ECE 01 , Approval of vehicles with regard to safety belt anchorages on passenger cars 74/2 97/EEC , impact) Interior fittings of motor vehicles (behaviour of the steering mechanism in the event of an 76/1 5/EEC , Anchorages for motor vehicle safety belts 77/541 /EEC , Safety belts and restraint systems of motor vehicles ) SAE J2 1 b , ISO 6487, 2) Instrumentation for impact tests Road vehicles — Techniques of measurement in impact test — Instrumentation Referred to in foreword only 32 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 183:1983 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 scheme of sup ervision and control which identifies the minimum level of quality control to b e exercis ed 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 testing 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 s cheme of sup ervision and control The p res ence 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 sys tem of s up ervis ion, control and tes ting, op erated during manufacture and including p eriodical insp 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 Ins titution, Maylands Avenue, H emel H emp s tead, H erts H P2 4S Q © BS I - 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