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1、INTERNATlOhlAL STANDARD 3282 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION .MEX.HAP*.HAR PAHJAUR no crwvxru3Aw .ORGANISATION INTERNATIONALE DE NORMALlSATlON Aircraft - Dimensions for single-hole and triple-hole mounting (Class 3) lever-operated manual switches Akronefs - Dimensions des interrupteur
2、s P levier ri commande manuelle, avec fixation par un ou trois trous (Classe 31 First edition - 1976-02-01 * ; :- ;y; j, 1 _. - UDC 629.7 : 621.316.54 Ref. No. IS0 3282-1976 (E) x ul 7 8 Descriptors : aircraft equipment, aircraft controls, toggle switches, manual controls, dimensions. m” 0 ” Price b
3、ased on 2 pages Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 22:02:37 MDTNo reproduction or networking permitted without license from IHS -,-,- FOREWORD IS0 (the international
4、 Organization for Standardization) is a worldwide federation of national standards institutes (IS0 Member Bodies). The work of developing International Standards is carried out through IS0 Technical Committees. Every Member Body interested in a subject for which a Technical Committee has been set up
5、 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. Graft International Standards adopted by the Technical Committees are circulated to the Member Bodies for approval before their accepta
6、nce as International Standards by the IS0 Council. International Standard IS0 3282 was drawn up by Technical Committee lSO/TC 20, Aircraft and space vehicles, and circulated to the Member Bodies in December 1973. It has been approved by the Member Bodies of the following countries : Belgium Canada C
7、zechoslovakia Egypt, Arab Rep. of Germany* Italy Japan Netherlands New Zealand Romania South Africa, Rep. of Spain Thailand Turkey U.S.A. U.S.S.R. Yugoslavia * With the exception of dimension D. The Member Bodies of the following countries expressed disapproval of the document on technical grounds :
8、 France United Kingdom 0 International Organization for Standardization, 1976 ? Printed in Switzerland : Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 22:02:37 MDTNo reproducti
9、on or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD IS0 3282-1976 (E) Aircraft - Dimensions for single-hole and triple-hole mounting (Class 3) lever-operated manual switches 1 SCOPE AND FIELD OF APPLICATlION This International Standard gives the overall dimensions, inclu
10、ding terminal screws, for single-hole and triple-hole mounting (Class 3) lever-operated manual switches, having the characteristics specified in IS0 3456, Aircraft - Lever-operated manual switches (Class 3) - Performance requirements. table, shall be mounted directly on the underside of the panel wi
11、th mounting holes and switch lever apertures which shall be in accordance with figure 2a). TABLE - Dimensions I Dimension I mm I in I 2 DIMENSIONAL REQUIREMENTS 2.1 The overall dimensions, including terminal screws, shall be in accordance with figure 1 and the table. The switch shall have at the cen
12、tre of the front face of the case a 12 mm diameter male thread of 1 mm or equivalent pitch for fixing to the mounting panel. The holes in the mounting panel for fixing the switch to the panel in the case of single-hole mounting shall be as shown in figure la). The smaller hole of diameter 3 mm, toge
13、ther with a keyway washer, which also locates in a keyway in the switch mounting bush, shall be used to prevent rotation of the switch, and shall orientate the switch correctly. A 48,3 max. 1.9 max. Single-pole 19.0 max. 0.748 max. Double-pole 25.9 max. 1.02 max. B Three-pole 35,l max. 1.38 max. Fou
14、r-pole 46.0 max. 1.81 max. C 34.3 max. 1.35 max. I 12,3 max. 0.484 max. I E* 23.8 + 1.6 0.838 +_ 0.06 + 3O30 e 18” - 6 30 2.2 Alternatively, where a triple-hole mounting is ? A lever length of 17.5 f 0.8 mm (0.688 f 0 03 in) is acceptable, required, the switch body, as shown in figure 2 and the but
15、non-preferred. E _, D ,_ A . I I I I i - . . _e - 4 FIGURE 1 - Dimensions for single-hole mounting switch 6 3 mm (0.12 in) min. FIGURE la) - Panel drilling 1 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001
16、 Not for Resale, 04/25/2007 22:02:37 MDTNo reproduction or networking permitted without license from IHS -,-,- 1603282-1976 E) A I I t-2 -0 Od + +I - - 9 * as = L B - - s FIGURE 2 - Dimensions for triple-hole mounting switch FIGURE 2 a) -Panel drilling 2 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 22:02:37 MDTNo reproduction or networking permitted without license from IHS -,-,-