1、BSI Standards PublicationBS EN 1621-2:2014Motorcyclists protectiveclothing against mechanicalimpactPart 2: Motorcyclists back protectors Requirements and test methodsBS EN 1621-2:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 1621-2:2014. Itsupersedes BS E
2、N 1621-2:2003 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PH/3/9, Motorcyclists Personal Protective Equipment.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to inclu
3、de all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 77774 5ICS 13.340.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This Britis
4、h Standard was published under the authority of theStandards Policy and Strategy Committee on 28 February 2014.Amendments issued since publicationDate Text affectedBS EN 1621-2:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1621-2 January 2014 ICS 13.340.10 Supersedes EN 1621-2:2003English
5、 Version Motorcyclists protective clothing against mechanical impact - Part 2: Motorcyclists back protectors - Requirements and test methods Vtements de protection contre les chocs mcaniques pour motocyclistes - Partie 2 : Protecteurs dorsaux - Exigences et mthodes dessai Motorradfahrer-Schutzkleidu
6、ng gegen mechanische Belastung - Teil 2: Rckenprotektoren - Anforderungen und Prfverfahren This European Standard was approved by CEN on 26 October 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the sta
7、tus of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may 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, G
8、erman). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified 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, Croa
9、tia, 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, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and U
10、nited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No.
11、EN 1621-2:2014 EBS EN 1621-2:2014EN 1621-2:2014 (E) 2 Contents Page Foreword 3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .5 4 Requirements .6 4.1 General 6 4.2 Innocuousness .6 4.3 Minimum dimensions of zones of protection .6 4.4 Impact attenuation .7 4.5 Ergonomic r
12、equirements 8 4.6 Sizing and size marking 8 5 Test methods and equipment .8 5.1 Impact attenuation .8 5.1.1 Equipment 8 5.1.2 Templates .9 5.1.3 Number of samples. 10 5.1.4 Number of tests . 10 5.1.5 Procedure 10 5.1.6 Tests . 12 5.2 Ergonomic assessment . 13 5.2.1 General . 13 5.2.2 Tests . 13 5.3
13、Expression of test results 14 5.4 Test report . 14 6 Marking 14 7 Information supplied by the manufacturer 15 Annex A (informative) Method of metrological confirmation. 18 A.1 Method of metrological confirmation . 18 A.2 Reference material 18 A.3 Preparation of the test sample 18 A.4 Procedure 18 A.
14、5 Calculation . 18 A.6 Precision 19 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 89/686/EEC . 20 Bibliography . 21 BS EN 1621-2:2014EN 1621-2:2014 (E) 3 Foreword This document (EN 1621-2:2014) has been prepared by Technical Committ
15、ee CEN/TC 162 “Protective clothing including hand and arm protection and lifejackets”, the secretariat of which is held by DIN. 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 July 2014, and confl
16、icting national standards shall be withdrawn at the latest by July 2014. 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 rights. This document
17、 supersedes EN 1621-2:2003. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive 89/686/EEC, see informative Annex ZA, which is an in
18、tegral part of this document. The main technical changes with respect to the 2003 edition are listed below: a new shape of protector has been added, the central back protector; requirements concerning innocuousness have been added; requirements concerning the wet impact test (mandatory) and the high
19、 and low temperature impact tests (optional) have been added; the waist to shoulder length shall be specified as a range. EN 1621 consists of the following parts, under the general title Motorcyclists protective clothing against mechanical impact: Part 1: Motorcyclists limb joint impact protectors R
20、equirements and test methods Part 2: Motorcyclists back protectors Requirements and test methods (the present document) Part 3: Requirements and test methods for chest protectors1) Part 4: Motorcyclists inflatable protectors Requirements and test methods According to the CEN-CENELEC Internal Regulat
21、ions, the national standards organizations of the following countries are 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, Ital
22、y, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. 1) Under development. BS EN 1621-2:2014EN 1621-2:2014 (E) 4 Introduction Motorcyclists back protectors are devices worn within or on
23、 top of other protective clothing, covering at least a portion of the back as corresponding to one of the three shapes of protectors described in the standard. The performance requirements have been chosen as a best practical compromise between protection, comfort, and ergonomic requirements. Protec
24、tors that are too stiff or heavy will not be worn. The test methods are designed to provide information on protection against impacts against edges such as kerb stones. The force levels in the tests do not compare directly with the forces to which riders are exposed in accidents, but experiences hav
25、e shown that products meeting the requirements of this European Standard reduce the incidence and severity of injuries. This standard accommodates three different typologies of back protector, which are offered to encourage the adoption of certified protection within the different disciplines of mot
26、orcycling and the type of rider. These are namely full back, central back and lower back (lumbar) protector, the definition of which are provided in Clause 3. Two performance levels are specified for motorcyclists back protectors against impacts. These are level 1 for protectors designed to give pro
27、tection whilst having low ergonomic penalties associated with its use and level 2 for protectors providing an increased protection with respect to level 1. There may be, however, weight and restriction penalties associated with level 2 protection. BS EN 1621-2:2014EN 1621-2:2014 (E) 5 1 Scope This E
28、uropean Standard specifies the minimum coverage to be provided by motorcyclists back protectors worn by riders in normal traffic situations. The standard contains the requirements for the performance of the protectors under impact and details of the test methods. Requirements for sizing, ergonomic r
29、equirements, and requirements for innocuousness, labelling and the provision of information are included. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition
30、 cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1621-1, Motorcyclists protective clothing against mechanical impact - Part 1: Motorcyclists limb joint impact protectors - Requirements and test methods ISO 6487, Road vehicle
31、s - Measurement techniques in impact tests - Instrumentation 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 full back protector FB protective device worn on the back intended to reduce the severity of injuries caused by impacts to the centra
32、l back and scapula area 3.2 central back protector CB protective device worn on the back intended to reduce the severity of injuries caused by impacts to central back area 3.3 lower back protector lumbar protector LB protective device worn on the back intended to reduce the severity of injuries caus
33、ed by impacts to the lumbar region 3.4 zone of protection specific area of the protective device that is intended to provide protection 3.5 waist to shoulder length length measured on the back from the waist line to the junction of the shoulder to the neck at the highest point (see Figure 1) Note 1
34、to entry: The sizing system of back protectors is based on the users waist to shoulder length, as no consistent relationship to the body height exists. The dimension is intended to be measured on the body with a tape measure. BS EN 1621-2:2014EN 1621-2:2014 (E) 6 Key 1 waist to shoulder length 2 wai
35、st line Figure 1 Body dimensions 3.6 waist line on a subject standing upright, the line in the plane of the waist, 50 mm above the supra-crystal plane which is at the level of the highest points of the iliac crests Note 1 to entry: The dimension of 50 mm is an example which refers to a subject of he
36、ight 1,78 m; it needs to be scaled pro rata with the height of the actual subject (see following sample data): Body height (m) 1,56 1,60 1,64 1,68 1,72 1,78 1,82 1,88 1,92 1,96 Distance above iliac crest (mm) 44 45 46 47 48 50 51 53 54 55 4 Requirements 4.1 General Motorcyclists back protectors shal
37、l meet an overall requirement that they are safe to use, comfortable to wear and fit for their purpose. Back protectors shall be provided with means of restraint and/or adjustments capable to ensure that the protector is maintained in position during use. This requirement is not applicable for prote
38、ctors to be inserted or incorporated into garments. Testing shall be carried out according to 5.2. 4.2 Innocuousness The innocuousness shall comply with the requirements of EN 1621-1. 4.3 Minimum dimensions of zones of protection Motorcyclists back protectors shall have a minimum zone of protection
39、related to the waist to shoulder measure of the largest user indicated by the marking. The minimum dimensions of the zone of protection shall be determined from Table 1, for the upper value of the size range (see 4.6). BS EN 1621-2:2014EN 1621-2:2014 (E) 7 a) Full back protector b) Central back prot
40、ector c) Lower back protector Figure 2 Minimum dimensions of zones of protection Table 1 Dimensions of minimum zone of protection for back protector Dimensions in Figure 2 A B C D E F 72 % 29 % 44 % 29 % 32 % 25 % NOTE All dimensions refer to the waist to shoulder length (100 %) of the biggest user.
41、 The dimensions and position of the zone of protection, relative to the coverage provided by the whole product, shall be given in the information supplied by the manufacturer (see Clause 7). NOTE The minimum dimensions of the zones of protection are usually marked on the specimens during the testing
42、 procedures. 4.4 Impact attenuation When impact protection is tested in accordance with 5.1.6.1 (ambient impact test), 5.1.6.2 (wet impact test) and, if required, 5.1.6.3 (high temperature impact test) and/or 5.1.6.4 (low temperature impact test), the transmitted force shall conform to the values in
43、 Table 2. Level 1 or 2 cannot be awarded unless such level is achieved under all of the claimed test conditions. Table 2 Performance levels Level 1 Level 2 mean value: 18 kN single strike: 24 kN mean value: 9 kN single strike: 12 kN After each test, there shall be no fragmentation of the sample and
44、no sharp edges shall be formed. However, formation of cracks and loss of soft debris is permissible. BS EN 1621-2:2014EN 1621-2:2014 (E) 8 4.5 Ergonomic requirements When examined and tested in accordance with 5.2, back protectors shall be found satisfactory for the use intended for motorcycle as in
45、dicated in the information supplied by the manufacturer. The centre line of the protective area shall be in line with the vertebra; the lower back protector shall cover the lumbar region of the back. The requirements are fulfilled if all answers to 5.2.2 are “Yes”. 4.6 Sizing and size marking Motorc
46、yclists back protectors shall be marked with their sizing using a pictogram (see Figure 6) in accordance with Figure 1. The waist to shoulder length, expressed in centimetres, shall be specified as a range up to max. 5 cm. Testing is done according to 5.2. 5 Test methods and equipment 5.1 Impact att
47、enuation 5.1.1 Equipment 5.1.1.1 Dropping apparatus The apparatus shall be such that a mass (“falling weight”) can be released in order to drop along a guided vertical path onto the sample placed on a test anvil. The centre of the mass of the falling weight shall lie over the centre of the anvil. 5.
48、1.1.2 Bar impactor A bar impactor which shall be rectangular with a length, h1, equal to (160 2) mm, a width, h2, at the top, equal to (50 1) mm and with a cylindrical face with a radius, R, equal to (12,5 0,1) mm shall be provided, see Figure 3. The mass of the impactor and guided mass shall be (5
49、000 50) g and its kinetic energy on impact shall be (50 1,5) J. Dimensions in millimetres Figure 3 Bar impactor 5.1.1.3 Anvil The anvil shall be made of polished steel with the following dimensions l1equal to (190 20) mm, l2equal to (100 2) mm and r1equal to (150 5) mm, see Figure 4. BS EN 1621-2:2014EN 1621-2:2014 (E) 9 The anvil shall be attached through a piezoelectric load cell or equivalent force transducer to a mass of at least 500 kg. The load cell or force transducer shall be preloaded to the manu
