1、BRITISH STANDARD BS EN ISO 19958:2004 Footwear Test methods for heels and top pieces Top piece retention strength The European Standard EN ISO 19958:2004 has the status of a British Standard ICS 61.060 BS EN ISO 19958:2004 This British Standard was published under the authority of the Standards Poli
2、cy and Strategy Committee on 24 September 2004 BSI 24 September 2004 ISBN 0 580 44503 8 National foreword This British Standard is the official English language version of EN ISO 19958:2004. It is identical with ISO 19958:2004. The UK participation in its preparation was entrusted to Technical Commi
3、ttee TCI/69, Footwear and leather, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be fou
4、nd in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are resp
5、onsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep
6、the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, pages 2 to 9 and a back cover. The BSI copyright notice displayed in this document i
7、ndicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 19958 September 2004 ICS 61.060 English version Footwear - Test methods for heels and top pieces - Top piece retention strength (ISO 19958:2
8、004) Chaussures - Mthodes dessai relatives aux talons et aux bonbouts - Force de rtention du bonbout (ISO 19958:2004) Schuhe - Prfverfahren fr Abstze und Oberflecken - Haltefestigkeit von Oberflecken (ISO 19958:2004) This European Standard was approved by CEN on 16 January 2004. CEN members are boun
9、d 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 may be obtained on application to the Ce
10、ntral Secretariat 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 to the Central Secretariat has the same status a
11、s the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, S
12、pain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2004 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN nation
13、al Members. Ref. No. EN ISO 19958:2004: EEN ISO 19958:2004 (E) 2 C o n t e n t s page Foreword3 1 Scope4 2 Normative references4 3 Terms and definitions .4 4 Apparatus and materials.4 5 Sampling and conditioning.4 5.1 General4 5.2 Preparation.5 6 Test method8 6.1 Principle8 6.2 Procedure.9 7 Express
14、ion of results9 8 Test report9 EN ISO 19958:2004 (E) 3 Foreword This document (EN ISO 19958:2004) has been prepared by Technical Committee CEN /TC 309 “Footwear“, the secretariat of which is held by AENOR, in collaboration with Technical Committee ISO/TC 216 “Footwear“. This European Standard shall
15、be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March 2005, and conflicting national standards shall be withdrawn at the latest by March 2005. According to the CEN/CENELEC Internal Regulations, the national standards organiza
16、tions of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slove
17、nia, Spain, Sweden, Switzerland and United Kingdom. EN ISO 19958:2004 (E) 4 1 Scope This European Standard specifies a test method for measuring the force required to detach the top piece from the underside of the shoe heel. The test is applicable to heels with the top piece already attached which h
18、ave been removed from complete shoes, to heels alone with the top piece attached and, in some instances, to heels with separate push-in top pieces. All heels, except reinforced slender heels with top pieces attached by steel spigots and built stacked heels, can be tested by this method. 2 Normative
19、references The following referenced document is indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN ISO 7500-1 Metallic materials - Verif
20、ication of static uniaxial testing machines - Part 1: Tension/compression testing machines (ISO 7500-1:1999). 3 Terms and definitions For the purposes of this European Standard, the following term and definition apply. top piece retention strength maximum force, expressed in Newton, required to pull
21、 off a top piece from the heel 4 Apparatus and materials 4.1 The following apparatus and materials shall be used. 4.2 Tensile testing machine, complying with the requirements of EN ISO 7500-1 class 2, with a range of 0 N to 1000 N and a constant-rate-of-loading of 15 N/s 5 N/s. A constant-rate-of-tr
22、averse tester, for which increase of force produces an appreciable movement of the load jaw (e.g. a “pendulum” tester”), may be used if the rate of traverse is set to give, on average, the specified rate of force application when a test is carried out. Alternatively, a constant-rate-of-traverse test
23、er for which there is little movement on the load jaw may be used if the top piece is attached to one jaw of the tester via one or more extensible cords which are substantially elastic over the force range of the test and the rate of traverse is adjusted until the specified rate of force application
24、 is obtained. 4.3 Drill, with twist drill beats of suitable sizes (see 5.2.1.4 and 5.2.1.5). 4.4 Bolt, of size M 4 or size M 3 for slender heels, and preferably of length 40 mm or more with a small metal ring or loop attached to its head by brazing. If only low heels are being tested, however, the b
25、olt need not be longer than about 20 mm. 4.5 Rod, of diameter 2 mm and appropriate length or one or more strong extensible cords, e.g. nylon shoes laces. 5 Sampling and conditioning 5.1 General The form of the test piece needs to be varied according to the height of the heels. For medium and high he
26、els the type of test piece shown in Figure 1 is convenient, in which the heel is held by one cord or rod. For heels of less than about 20 mm in height this cord is likely to interfere with the bolt attached to the top piece. In such cases the form of attachment shown in Figure 2 should be used. EN I
27、SO 19958:2004 (E) 5 5.2 Preparation 5.2.1 Medium and high heels 5.2.1.1 The prepared test piece is illustrated in Figure 1. 5.2.1.2 It is permissible to test heels and top pieces supplied separately, provided the top piece can be attached in the laboratory by essentially the same method as in produc
28、tion. Push-in top pieces shall be inserted fully by pneumatic pressure. Some types of these top pieces are additionally attached by short nails inserted through holes moulded in the top piece. This also may be inserted in the laboratory, by hammering or pneumatic pressure, but the correct nail shall
29、 be used. The top piece may be attached by staples using a staple gun provided the staples are the same as those used in production. The attachment of the top piece may precede or follow the other details of the preparation described in 5.2.1.3, 5.2.1.4 and 5.2.1.5. 5.2.1.3 Cut through the heel stem
30、 parallel to the top piece and approximately 30 mm from it, in order to gain access to the cavity and inner side of the top piece or top piece spigot. This may be done with the heel still attached to the shoe or, if preferred, the heel may be detached first by removing the heel attaching pins. For f
31、airly low heels the amount cut off may be reduced to approximately 20 mm provided there is still enough room for the bolt (see 6.2.2). Otherwise the procedure for low heels described in 5.2 should be used. In the case of heels having the “Autoloc” type of top piece attachment which do not have a ful
32、l height centre cavity in the stem, it is necessary to drill a hole down the centre of the stem from the cut surface to the “Autoloc” cavity or recess on the underside of the heel. The diameter of this hole should be not less than 10 mm. 5.2.1.4 Drill a hole vertically through the centre of the top
33、piece just large enough to accommodate a suitable bolt of the type described in 4.4. 5.2.1.5 Drill the heel stem horizontally from one side to the other approximately 5 mm above the cut surface, as shown in Figure 1, so that the drilled hole, which should be large enough to take the rod or cord desc
34、ribed in 4.5, is parallel to the heel breast and passes through the vertical centreline of the top piece. 5.2.2 Low heels 5.2.2.1 The prepared test piece is shown in Figure 2. Where the heel is attached to a shoe, remove it by extracting the heel attaching pins. 5.2.2.2 Cut out any rib or ribs acros
35、s the centre cavity in the heel, taking care not to damage the top piece when doing this. 5.2.2.3 Drill a hole vertically through the centre of the top piece just large enough to accommodate a suitable bolt of the type described in 4.4. 5.2.2.4 Drill two holes horizontally through the heel from one
36、side to the other, large enough to take the cord described in 4.5. They shall be parallel to the heel breast, approximately 6 mm from the heel/top piece interface and approximately 12 mm on each side of the centre of the top piece. EN ISO 19958:2004 (E) 6 Key 1 Tensile machine jaw 2 Rod to top jaw 3
37、 Bolt 4 Drilled hole in top-piece for bolt 5 Top-piece 6 Heel 7 Washer 8 Nut 9 Drilled hole for rod or cord 10 Rod or cord to bottom jaw 11 Part of heel not required for test 12 At least 40 mm 13 Heel cut along this line 14 Approximately 30 mm Figure 1 Testing of high and medium heels. Side view of
38、testing assembly and section through heel EN ISO 19958:2004 (E) 7 Figure 2a - Side view of test assembly and section through heel and top piece in the heel/toe direction EN ISO 19958:2004 (E) 8 Key 1 Plastic heel 2 Top piece 3 Washer 4 Bolt and nut 5 Horizontal hole drilled through heel with cord F
39、insert 6 Cord 7 Holes drills in top piece with bolt D insert 8 Grindery for attaching top piece to heal, inserted during shoe or heel manufacture 9 Tensile machine jaw 10 Not more than 2 mm 11 Approximately 24 mm Figure 2b - Plan view from underneath with cords laid flat Figure 2 Testing of low heel
40、s 6 Test method 6.1 Principle The top piece is pulled off by a steadily increasing force which is applied to its centre perpendicular to the top piece/heel interface. The top piece is first to be drilled to receive a bolt which is attached to one jaw of the tensile machine and the heel cut and drill
41、ed to attach it to the other jaw. Several heels need to be tested and the results expressed individually as usually it is the lower values, rather than the average, which are the most important. EN ISO 19958:2004 (E) 9 6.2 Procedure 6.2.1 Where a constant-rate-of-traverse tensile testing machine is
42、being used, carry out a preliminary test using the procedure described in 6.2.2 to 6.2.5 to establish the rate of traverse which is necessary to get a rate of force application of 15 N/s 5 N/s. For a constant-rate-of-loading machine simply set into this specified rate. 6.2.2 Pass the bolt fully thro
43、ugh the hole in the top piece from the outside and attach to it a suitable washer and nut. In the case of medium and high heels prepare as in Figure 1 screw on the nut only until the end of the bolt just protrudes through it; if screwed on further, the end of the bolt may prevent the insertion of th
44、e rod or cord through the horizontal hole. The washer used should be almost as large as the cavity in the heel, the gap between the edge of the washer and the nearest part of the wall of the cavity being no more than 2 mm. 6.2.3 Attach the bolt to the upper jaw of the tensile testing machine. A loop
45、 of welding rod treaded through the ring on the bolt with its ends clamped in the jaws of the machine is a suitable way of doing this. 6.2.4 For medium and high heels, insert a rod or cord horizontally through the hole in the heel stem and attach its ends symmetrically in the lower jaw of the machin
46、e (if welding rod is used the ends can be bent and clamped in the jaw). For low heels, insert two similar cords through the two drilled horizontal holes and clamp the four ends symmetrically so that the heel is horizontal and will remain so during the test (cord is recommended in preference to rod f
47、or low heels because it is difficult to bend and clamp rod so that the heel is horizontal). 6.2.5 Start the machine and record the highest force reached as the top piece is pulled out of the heel. For many low heels with large top pieces there will be an initial peak force corresponding to detachmen
48、t of only part of the top piece. Record this force as well as the highest force reached before the top piece is detached completely (in some cases the initial peak may be the highest force). 6.2.6 Repeat the test with other five top piece/heel assemblies by following the same procedure. 7 Expression
49、 of results For each individual top piece/heel assembly, quote the maximum force, in N, required to detach the top piece completely and the initial peak force (if any). Also describe the types and position of the failures corresponding to these recorded forces. 8 Test report The test report shall include the following information: a) the results, expressed in accordance with clause 7; b) a full description of the samples tested, including commercial styles codes, colours, nature, etc.;
