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1、BRITISH STANDARD BS 9564:1980 Incorporating Amendment No. 1 Specification for Push-button switches of assessed quality: generic data and methods of test; general rules for the preparation of detail specifications UDC 621.316.542.3 Licensed Copy: London South Bank University, London South Bank Univer
2、sity, Fri Dec 08 02:07:21 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9564:1980 This British Standard, having been prepared under the direction of the Electronic Components Standards Committee, was published under the authority of the Executive Board and comes into effect on 28 November 1980 BSI 0
3、1-2000 First published June 1976 First revision November 1980 The following BSI references relate to the work on this standard: Committee reference ECL/21 Draft for comment 79/24000 DC ISBN 0 580 11703 0 Cooperating organizations The Electronic Components Standards Committee, under whose direction t
4、his British Standard was prepared, consists of representatives from the following: British Electrical and Allied Manufacturers Association (BEAMA) Electricity Supply Industry in England and Wales* Electronic Components Industry Federation* Electronic Engineering Association* Institution of Electroni
5、c and Radio Engineers Ministry of Defence* National Supervising Inspectorate* Post Office* Society of British Aerospace Companies Limited* Telecommunication Engineering and Manufacturing Association (TEMA) The organizations marked with an asterisk in the above list, together with the following, were
6、 directly represented on the Technical Committee entrusted with the preparation of this British Standard: Association of Control Manufacturers Tacma (BEAMA) Amendments issued since publication Amd. No.Date of issueComments 4714April 1989Indicated by a sideline in the margin Licensed Copy: London Sou
7、th Bank University, London South Bank University, Fri Dec 08 02:07:21 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9564:1980 BSI 01-2000i Contents Page Cooperating organizationsInside front cover Forewordiii Section 1. Principles and mandatory procedures 1.1General matters1 1.1.1Scope1 1.1.2Related
8、 documents1 1.1.3Terminology1 1.1.4Letter symbols, signs and abbreviations3 1.1.5Graphical symbols3 1.1.6Marking of the component and package3 1.1.7Eligibility for qualification approval3 1.1.8Structurally similar components3 1.1.9Delayed delivery3 1.1.10Procedures for qualification approval3 1.1.11
9、Certified test records3 1.1.12Standard values of ratings and characteristics4 1.1.13Unchecked parameters5 1.1.14Procedure to be followed in the event of failures at group C or D inspection5 1.1.15Ordering information5 1.1.16Release prior to completion of group B tests5 1.2Test procedures5 1.2.1Measu
10、rement conditions5 1.2.2Visual inspection5 1.2.3Dimensions6 1.2.4Electrical test procedures6 1.2.5Mechanical test procedures9 1.2.6Environmental test procedures10 1.2.7Optical test procedures13 1.2.8Endurance test procedures13 1.2.9Resistance to solvents14 1.2.10Resistance to contaminating fluids15
11、1.2.11Flammability15 Section 2. General rules for the preparation of detail specifications 2.1Basic information16 2.1.1Originator of the detail specification16 2.1.2Detail specification number16 2.1.3Description of the component and assessment level16 2.1.4Outline drawing16 2.1.5Ratings16 2.1.6Chara
12、cteristics17 2.1.7Related documents17 2.1.8Additional information17 2.1.9Ordering information17 2.2Inspection requirements17 2.2.1Group A inspection18 2.2.2Group B inspection18 2.2.3Group C inspection18 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:07:21 GM
13、T+00:00 2006, Uncontrolled Copy, (c) BSI BS 9564:1980 ii BSI 01-2000 Page 2.2.4Group D inspection18 2.3Certified test records18 2.3.1General information18 2.3.2Attributes information18 2.3.3Measurements information18 2.3.4Explanatory information18 2.3.5Test schedule18 Appendix A Guide to the present
14、ation of drawing information23 Appendix B Example of a certified test record23 Figure 1 Circuit diagrams showing the connections to switches for overload and electrical endurance tests9 Table 1 Inspection requirements for basic assessment level19 Table 2 Inspection requirements for alternative proce
15、dures for qualification approval at basic assessment level20 Table 3 Inspection requirements for full assessment level20 Table 4 Requirements for alternative procedure for qualification approval at the full assessment level22 Licensed Copy: London South Bank University, London South Bank University,
16、 Fri Dec 08 02:07:21 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9564:1980 BSI 01-2000iii Foreword This British Standard, which has been prepared under the direction of the Electronic Components Standards Committee is the generic specification for push-button switches in the system of standards fo
17、r electronic components. The revision is necessary in the light of changes in test requirements for switches for electronic equipment. This standard calls for the use of substances and/or test procedures that may be injurious to health if adequate precautions are not taken. It refers only to technic
18、al suitability and in no way absolves either the supplier or user from statutory obligations relating to health and safety at any stage of manufacture or use. When references are given in parentheses to IEC publications of the International Electrotechnical Commission (IEC) the standards are usually
19、 identical in technical content, apart from minor deviations, with the British Standard quoted or with this British Standard. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Complianc
20、e with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, pages 1 to 24 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorpora
21、ted. This will be indicated in the amendment table on the inside front cover. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:07:21 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: London South Bank University, London South Bank University,
22、Fri Dec 08 02:07:21 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9564:1980 BSI 01-20001 Section 1. Principles and mandatory procedures 1.1 General matters 1.1.1 Scope This British Standard specifies requirements and methods of test for push-button switches of assessed quality for use primarily in e
23、quipment for telecommunications and in electronic devices employing similar techniques. It also prescribes rules for the preparation of detail specifications. Switches covered by this specification have a rated voltage not exceeding 500 V (d.c. or a.c. r.m.s.) or a rated current not exceeding 25 A.
24、1.1.2 Related documents BS 245, Specification for mineral solvents (white spirit and related hydrocarbon solvents) for paints and other purposes. BS 308, Engineering drawing practice. BS 415, (IEC 65) Safety requirements for mains-operated electronic and related apparatus for household and similar g
25、eneral use. BS 575, Carbon tetrachloride. BS 580, Trichloroethylene. BS 1376, Colours of light signals. BS 1991, Letter symbols, signs and abbreviations Part 6: Electrical science and engineering. BS 2011, (IEC 68) Basic environmental testing procedures. BS 3763, The International System of units (S
26、I). BS 3939, Graphical symbols for electrical power, telecommunications and electronics diagrams Sections 15 to 19. BS 3955, Electrical controls for domestic appliances. BS 4000, Sizes of papers and boards. BS 4099, Specification for colours of indicator lights, push buttons, annunciators and digita
27、l readouts. BS 4727, Glossary of electrotechnical, power, telecommunication, electronics, lighting and colour terms. BS 5772, Specification for electromechanical components for electronic equipment: Basic testing procedures and measuring methods Part 2: General examination, electrical continuity and
28、 contact resistance tests, insulation tests and voltage stress tests. BS 6000, Guide to the use of BS 6001. Sampling procedures and tables for inspection by attributes. BS 6001, Sampling procedures and tables for inspection for attributes. BS 9000, General requirements for electronic components of a
29、ssessed quality. PD 9002, BS 9000 Component selection guide. PD 9004, BS 9000, CECC and IECQA UK Administrative Guide. Procedures for the national implementation of quality assessment systems for electronic components. NOTEThe attention of users is drawn to the need to comply with safety requirement
30、s given in any equipment specifications (e.g. BS 415). 1.1.3 Terminology For the purposes of this British Standard, the following terms and their definitions are applicable, in addition to those given in BS 4727. 1.1.3.1 Push-button switches 1.1.3.1.1 basic single cell an assembly consisting of a bu
31、tton, a mechanical system, a switching element and possibly an associated lamp or light source 1.1.3.1.2 multi-cell an assembly containing two or more basic single cells, each of which may have any of the mechanical systems. The assembly may have the basic single cells stacked in both horizontal and
32、 vertical directions. Interaction may be mechanical and/or electromagnetic 1.1.3.1.3 assembly a) A frame assembly consists of one row of single cells and a specified method of mounting. b) A matrix assembly consists of two or more rows of single cells and a specified method of mounting. 1.1.3.1.4 fi
33、xing supports the points of attachment for either a frame or a matrix assembly to a panel or mounting plate 1.1.3.2 Buttons 1.1.3.2.1 push-button a control device that moves under manual pressure generally in the direction of the axis of the button 1.1.3.2.2 illuminated button a button that has asso
34、ciated with it a lamp or lamps that can give a visual indication by illumination. The lamp circuitry or light source may be related to, or independent of, the button action Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:07:21 GMT+00:00 2006, Uncontrolled Cop
35、y, (c) BSI BS 9564:1980 2 BSI 01-2000 1.1.3.2.3 piano key button a button that is generally actuated by a movement of rotation about a distant axis as with a piano key 1.1.3.2.4 rocker button a button actuated by a movement of rotation about a frontal axis adjacent to the button and such that there
36、are two or more positions 1.1.3.2.5 button operation the movement of a button to the full extent of its permissible travel when a defined force is first applied and then removed 1.1.3.2.6 button positions the points of rest (including non-locking) that the button may occupy a) normal position. The p
37、osition that the button assumes when no force has been exerted on it. b) depressed position. The position assumed by the button when a manual force is exerted on it (1.1.3.3.8) or has been exerted on it (1.1.3.3.7), resulting in its displacement. 1.1.3.3 Mechanical (and electromagnetic) systems and
38、related button actions 1.1.3.3.1 basic mechanical system a device ensuring the transmission of the button movement to the part carrying the moving contacts 1.1.3.3.2 inter-dependent mechanical system a mechanical system used with two or more basic cells such that the operation of the button causes t
39、he tripping of another NOTEThe term applies to grouped cells. A complete push-button switch may comprise several distinct groups of interdependent basic cells. The above definition is valid only within the same group. 1.1.3.3.3 independent mechanical system a mechanical system used with one basic ce
40、ll the button of which, when subjected to the normal manual operation, has no effect on other basic cells; similarly other basic cells, when actuated, have no effect on the independent basic cell. Locking and non-locking types are included 1.1.3.3.4 locking mechanical system a mechanical system such
41、 that the operation of a button locks a given number of other buttons in either the depressed position or the normal position 1.1.3.3.5 blocked mechanical system a mechanical system preventing the operation of more than one button at a time 1.1.3.3.6 accumulative latching mechanical system a mechani
42、cal system such that any number of buttons will remain operated until a separate cancelling button is operated 1.1.3.3.7 double pressure mechanical system (push-push) a mechanical system such that the button attains a position at first pressure, is retained there after the removal of that pressure,
43、and is disengaged when the pressure is again applied and removed 1.1.3.3.8 single pressure mechanical system (momentary) a mechanical system such that the button attains a position at first pressure and returns to its original position on the removal of that pressure 1.1.3.3.9 single pressure mainta
44、ined mechanical system a mechanical system such that the button attains a position at first pressure and returns to its original position on the removal of that pressure, leaving the internal mechanism and contacts in the operated condition. Repeating the application and removal of the pressure on t
45、he button releases the mechanical system and the contacts to their original positions 1.1.3.3.10 sequence systems mechanical interlocking systems of multi-cell switches whereby the operation of prescribed button(s) may prevent the operation and/or release the locking mechanism of other cells NOTEThe
46、 system should be described in the detail specification. 1.1.3.4 Electrical ratings and characteristics 1.1.3.4.1 rated voltage and rated current the voltage and current specified in the detail specification 1.1.3.4.2 transit time the time interval between the instant when the moving contact leaves
47、one fixed contact and the instant when it reaches the other fixed contact. For multiple moving contacts in a single basic cell, transit time is calculated from the first break to the last make Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:07:21 GMT+00:00 20
48、06, Uncontrolled Copy, (c) BSI BS 9564:1980 BSI 01-20003 1.1.3.5 Seals 1.1.3.5.1 panel seal (or seals) a seal (or seals) incorporated in the design of a switch that permits the switch to be mounted and operated on the panel of a sealed enclosure without impairing the sealing of the enclosure 1.1.3.5
49、.2 solvents seal a seal incorporated in the design of a switch to prevent the ingress of solvents 1.1.3.5.3 hermetically sealed switch a switch that is completely protected in itself against the ingress of moisture or gases 1.1.3.5.4 non-sealed switch a switch having no seal against the ingress of moisture or gases 1.1.3.6 sub-assembly the permanent assembly of two or more piece parts 1.1.4 Letter symbols, signs and abbreviations The letter symbols, signs and abbreviations shall be in accordance with BS 1991-6 where applicable. 1.1.5 Graphical symbols Where app
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