1、BSI Standards PublicationBS EN ISO 4210-6:2015Cycles Safety requirementsfor bicyclesPart 6: Frame and fork test methodsBS EN ISO 4210-6:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO4210-6:2015. It supersedes BS EN ISO 4210-6:2014 which iswithdrawn.The
2、 UK participation in its preparation was entrusted to TechnicalCommittee GME/25, Cycles.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for i
3、ts correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 89361 2ICS 43.150Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Stra
4、tegy Committee on 30 September 2015.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORMEN ISO 4210-6 September 2015 ICS 43.150 Supersedes EN ISO 4210-6:2014English Version Cycles - Safety requirements for bicycles - Part 6: Frame and fork test metho
5、ds (ISO 4210-6:2015) Cycles - Exigences de scurit des bicyclettes - Partie 6: Mthodes dessai du cadre et de la fourche (ISO 4210-6:2015) Fahrrder - Sicherheitstechnische Anforderungen an Fahrrder - Teil 6: Prfverfahren fr Rahmen und Gabel (ISO 4210-6:2015) This European Standard was approved by CEN
6、on 8 August 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards ma
7、y be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified
8、to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland
9、, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Manageme
10、nt Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 4210-6:2015 EBS EN ISO 4210-6:2015EN ISO 4210-6:2015 (E) 3 European foreword This document (EN ISO 4210-6:2015) has been prepared
11、 by Technical Committee ISO/TC 149 “Cycles” in collaboration with Technical Committee CEN/TC 333 “Cycles” the secretariat of which is held by UNI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by M
12、arch 2016, and conflicting national standards shall be withdrawn at the latest by March 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent
13、rights. This document supersedes EN ISO 4210-6:2014. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are
14、 bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Por
15、tugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 4210-6:2015 has been approved by CEN as EN ISO 4210-6:2015 without any modification. BS EN ISO 4210-6:2015ISO 4210-6:2015(E)Foreword ivIntroduction v1 Scope . 12 Normativ
16、e references 13 Terms and definitions . 14 Frame test methods . 14.1 Frame Impact test (falling mass) . 14.1.1 General 14.1.2 Test method 14.2 Frame and front fork assembly Impact test (falling frame) 34.2.1 General 34.2.2 Test method 44.3 Frame Fatigue test with pedalling forces 64.3.1 General 64.3
17、.2 Test method 64.4 Frame Fatigue test with horizontal forces . 74.4.1 General 74.4.2 Test method 84.5 Frame Fatigue test with a vertical force . 94.5.1 General 94.5.2 Test method 95 Fork test methods .105.1 Suspension forks Tyre-clearance test . 105.2 Suspension forks Tensile test . 115.3 Front for
18、k Static bending test 115.4 Front fork Rearward impact test . 115.4.1 Test method 1 115.4.2 Test method 2 135.4.3 Test method 3 135.5 Front fork Bending fatigue test and rearward impact test .145.6 Forks intended for use with hub or disc brakes 155.6.1 General. 155.6.2 Fork for hub/disc brake Static
19、 brake-torque test 155.6.3 Fork for hub/disc brake Brake mount fatigue test .165.7 Tensile test for a non-welded fork . 17Annex A (normative) Dummy fork characteristics .18Annex B (normative) Fork mounting fixture 20Annex C (informative) Suspension frames Tyre-clearance test .21 ISO 2015 All rights
20、reserved iiiContents PageBS EN ISO 4210-6:2015ISO 4210-6:2015(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical com
21、mittees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
22、 International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for th
23、e different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IS
24、O shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this docum
25、ent is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade
26、(TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 149, Cycles, Subcommittee SC 1, Cycles and major sub-assemblies.This second edition cancels and replaces the first edition (ISO 4210-6:2014), which has been technically revised.ISO
27、4210 consists of the following parts, under the general title Cycles Safety requirements for bicycles: Part 1: Terms and definitions Part 2: Requirements for city and trekking, young adult, mountain and racing bicycles Part 3: Common test methods Part 4: Braking test methods Part 5: Steering test me
28、thods Part 6: Frame and fork test methods Part 7: Wheels and rims test methods Part 8: Pedal and drive system test methods Part 9: Saddles and seat-post test methodsiv ISO 2015 All rights reservedBS EN ISO 4210-6:2015ISO 4210-6:2015(E)IntroductionThis International Standard has been developed in res
29、ponse to demand throughout the world, and the aim has been to ensure that bicycles manufactured in compliance with this International Standard will be as safe as is practically possible. The tests have been designed to ensure the strength and durability of individual parts as well as of the bicycle
30、as a whole, demanding high quality throughout and consideration of safety aspects from the design stage onwards.The scope has been limited to safety considerations and has specifically avoided standardization of components.If the bicycle is to be used on public roads, national regulations apply. ISO
31、 2015 All rights reserved vBS EN ISO 4210-6:2015BS EN ISO 4210-6:2015Cycles Safety requirements for bicycles Part 6: Frame and fork test methods1 ScopeThis part of ISO 4210 specifies the frame and fork test methods for ISO 4210-2.2 Normative referencesThe following documents, in whole or in part, ar
32、e normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 4210-1, Cycles Safety requirements for bicycles Part
33、 1: Terms and definitionsISO 4210-2:2015, Cycles Safety requirements for bicycles Part 2: Requirements for city and trekking, young adult, mountain and racing bicyclesISO 4210-3:2014, Cycles Safety requirements for bicycles Part 3: Common test methods3 Terms and definitionsFor the purposes of this d
34、ocument, the terms and definitions given in ISO 4210-1 apply.4 Frame test methods4.1 Frame Impact test (falling mass)4.1.1 GeneralManufacturers of frames are permitted to conduct the test with a dummy fork (see Annex A) fitted in place of a front fork.Where a frame is convertible for male and female
35、 riders by the removal of a bar, test it with the bar removed.Where a suspension fork is fitted, test the assembly with the fork extended to its unloaded free length. Where a rear suspension system is incorporated in the frame, secure the suspension in a position equivalent to that which would occur
36、 with an 80 kg rider seated on the bicycle. For young adult bicycles, secure the suspension in a position equivalent to that which would occur with a 40 kg rider seated on the bicycle; if the type of suspension system does not permit it to be locked, then replace the spring/damper unit by a solid li
37、nk of the appropriate size and with end fittings similar to those of the spring/damper unit.4.1.2 Test methodAssemble a roller of mass less than or equal to 1 kg and with dimensions conforming to those shown in Figure 1 in the fork. The hardness of roller shall be not less than 60 HRC at impact surf
38、ace. If a dummy fork is used in place of a fork, the bar shall have a rounded end equivalent in shape to the roller. Hold INTERNATIONAL STANDARD ISO 4210-6:2015(E) ISO 2015 All rights reserved 1BS EN ISO 4210-6:2015ISO 4210-6:2015(E)the frame-fork or frame-bar assembly vertically with clamping to a
39、rigid fixture by the rear-axle attachment points as shown in Figure 1.Rest a striker of mass 22,5 kg on the roller in the fork dropouts or on the rounded end of the dummy fork and measure the wheelbase. Raise the striker to a height of h1above the low-mass roller and release it to strike the roller
40、or the steel bar at a point in line with the wheel centres and against the direction of the fork rake or rake of the bar. The drop heights are given in Table 1. The striker will bounce and this is normal. When the striker has come to rest on the roller or dummy fork, measure the wheelbase again.If t
41、he fork fails, the frame shall be tested with a dummy fork.NOTE See ISO 4210-3:2014, Annex B.Table 1 Drop heightsDimensions in millimetresBicycle typeCity and trekking bicyclesYoung adult bicyclesMountain bicycles Racing bicyclesDrop height, h1180 180 360 2122 ISO 2015 All rights reservedBS EN ISO 4
42、210-6:2015ISO 4210-6:2015(E)Dimensions in millimetresKeyh1drop height1 wheelbase2 permanent deformation3 22,5 kg striker4 low-mass roller (1 kg max.)5 rigid mounting for rear-axle attachment point6 direction of rearward impactFigure 1 Frame and front fork assembly Impact test (falling mass)4.2 Frame
43、 and front fork assembly Impact test (falling frame)4.2.1 GeneralManufacturers of complete bicycles shall conduct the test with the frame fitted with the appropriate front fork. ISO 2015 All rights reserved 3BS EN ISO 4210-6:2015ISO 4210-6:2015(E)For manufacturers of frames, where the fork intended
44、for the frame is not available, the test can be conducted with the frame fitted with a fork which meets the requirements of the fork impact test as described in ISO 4210-2:2015, 4.9.5.Where a frame is convertible for male and female riders by the removal of a bar, test it with the bar removed.Where
45、a suspension fork is fitted, it shall be at its unloaded length prior to the impact. If the spring/damper unit can be locked, it shall be locked in its unloaded length position. If the spring/damper cannot be locked, use one of the two following alternative procedures: secure the fork at its extende
46、d length by an external locking method, or replace the fork by a rigid fork which is known to meet the requirements of the impact test described in ISO 4210-2:2015, 4.9.5 and of a length which is consistent with an 80 kg (in case of young adult bicycles, apply 40 kg) rider seated in a normal riding
47、position on the bicycle when it is equipped with the suspension fork.Where a rear suspension system is incorporated in the frame, secure the spring/damper unit in a position equivalent to that which would occur with an 80 kg (in case of young adult bicycles, apply 40 kg) rider seated on the bicycle;
48、 if the type of suspension system does not permit it to be locked, then replace the spring/damper unit by a solid link of the appropriate size and with end fittings similar to those of the spring/damper unit.4.2.2 Test methodConduct the test on the assembly used for the test in ISO 4210-2:2015, 4.8.
49、2 or, in the case of a frame manufacturer who does not make forks, with the same frame with a suitable fork fitted (see 4.2.1).As shown in Figure 2, mount the frame-fork assembly at its rear axle attachment points so that it is free to rotate about the rear axle in a vertical plane. Support the front fork on a flat steel anvil so that the frame is in its normal position of use. Securely fix mass M1to the seat-post as shown in Figure 2 with the centre of gravity at distance D (= 75 mm) alo
