《ISO-3765-1998.pdf》由会员分享，可在线阅读，更多相关《ISO-3765-1998.pdf（8页珍藏版）》请在三一文库上搜索。
1、A Reference number ISO 3765:1998(E) INTERNATIONAL STANDARD ISO 3765 Second edition 1998-11-15 Timekeeping instruments Wristwatches Dimensions of bracelet-to- case fastening elements Instruments horaires Montres-bracelets Dimensions de raccordement des bracelets aux botes ISO 3765:1998(E) ISO 1998 Al
2、l rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case
3、postale 56 CH-1211 Genve 20 Switzerland Internetisoiso.ch Printed in Switzerland ii Foreword ISO (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 thro
4、ugh ISO technical committees. 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 collabor
5、ates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at
6、 least 75 % of the member bodies casting a vote. International Standard ISO 3765 was prepared by Technical Committee ISO/TC 114, Horology, Subcommittee SC 7, Overall dimensions. This second edition cancels and replaces the first edition (ISO 3765:1976), which has been technically revised. INTERNATIO
7、NAL STANDARD ISOISO 3765:1998(E) 1 Timekeeping instruments Wristwatches Dimensions of bracelet-to-case fastening elements 1 Scope This International Standard specifies the dimensions for fixing a bracelet to a wristwatch-case with the use of spring bars. This International Standard is applicable to
8、wristwatch cases of two types and spring bars of three types. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards ar
9、e subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 286-1:1
10、988, ISO system of limits and fits Part 1: Bases of tolerances, deviations and fits. ISO 6426-2:1984, Horological vocabulary Part 2: Technico-commercial definitions. 3 Definitions For the purposes of this International Standard, the definitions given in ISO 6426-2 and the following apply. 3.1 case p
11、rotective jacket in which a watch-movement is mounted 3.2 lug part of a case with a hole to which a bracelet is fastened with a spring bar 3.3 spring bar unit containing a spring and used for fastening a bracelet to a case 4 Classification 4.1 Wristwatch-cases Wristwatch-cases are classified into tw
12、o types: Type 1: case with two lugs arranged on two sides of a case; a bracelet is fastened between these lugs by the use of spring bars (figures 1 and 2); ISO 3765:1998(E) ISO 2 Type 2: case similar to type 1 case but lugs are made together with a cover arranged on the upper surface of lugs; a brac
13、elet is fastened between these lugs by the use of a spring bar (figure 3). 4.2 Spring bars This International Standard is applicable to three types of spring bars: Type 1: spring bar with two moving pins (figure 4); Type 2: spring bar with one moving pin (figure 5); Type 3: curved spring bar (figure
14、 6). 5 Forms and dimensions of fastening elements 5.1 Types of watch-cases Figure 1 Type 1 case with two lugs fitted with blind holes Figure 2 Type 1 case with two lugs fitted with through holes ISOISO 3765:1998(E) 3 Figure 3 Type 2 case with two lugs made together with a cover 5.2 Types of spring b
15、ars Key 1 Variant of collar Figure 4 Type 1 spring bar with two moving pins Figure 5 Type 2 spring bar with a single moving pin ISO 3765:1998(E) ISO 4 Figure 6 Curved spring bar 6 Fixing dimensions and tolerances of watch-cases and spring bars See tables 1 and 2. Table 1 Watch-cases Dimensions in mi
16、llimetres Table 2 Spring bars Dimensions in millimetres Distance between lugs A Clearance for spring bar b1 = b2 Diameter of hole in lug D1 Useful depth of hole L1 Length of hole L2 Diameter of pin d1 Diameter of body d2 Diameter of collar d3 Useful length of pivot l1 Length of pivot l2 H13 aH15 aH1
17、1 amin.min.h11 ah11 ajs11 amin.max. 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 22 24 0,5 0,7 1,1 1,5 2,0 D1 = d1 + 0,05 or D1 = d1 + 0,10 L1 = l2 + 0,05L2 = l2 + 0,10 0,56 0,75 0,80 0,90 1,00 1,20 1,00 1,30 1,50 1,80 1,20 1,50 1,80 1,80 2,00 2,50 0,80 1,20 1,40 1,05 1,20 1,30 1,70 1,60 1,80 l1 = 0,85 l2 0,70 0,80 0,80 0,95 1,00 1,10 1,20 a See ISO 286-1. a See ISO 286-1. ISO 3765:1998(E) ISO ICS 39.040.10 Descriptors: horological industry, time measuring instruments, wrist watches, watch cases, fasteners, form specifications, dimensions, dimensional tolerances. Price based on 4 pages