1、SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirelyvoluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefro
2、m, is the sole responsibility of the user.”SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions.QUESTIONS REGARDING THIS DOCUMENT: (412) 772-8512 FAX: (412) 776-0243TO PLACE A DOCUMENT
3、 ORDER; (412) 776-4970 FAX: (412) 776-0790http:www.sae.orgCopyright 1977 Society of Automotive Engineers, Inc.All rights reserved. Printed in U.S.A.SURFACEVEHICLE400 Commonwealth Drive, Warrendale, PA 15096-0001RECOMMENDEDPRACTICESubmitted for recognition as an American National StandardJ234REV.OCT7
4、7Issued 1971-05Revised 1977-10Superseding J234 MAY71ELECTRIC WINDSHIELD WASHER SWITCHForewordThis Document has not changed other than to put it into the new SAE Technical Standards BoardFormat.1. Scope2. References2.1 Applicable PublicationThe following publication forms a part of the specification
5、to the extent specifiedherein. Unless otherwise indicated the lastest revision of SAE publications shall apply.2.1.1 SAE PUBLICATIONAvailable from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001.SAE J112a NOV71Electric Windshield Wiper Switch3. Definitions3.1 Electric Windshield Washer Switch
6、That part of an electric windshield washer system by which theoperator of a vehicle causes the windshield washers to function.4. Temperature Test4.1 To insure basic function, the switch shall be manually cycled for 10 cycles at design electrical load at 75 10 F(24 5.5 C), 165 +0, 5 F (74, +0, 2.8 C)
7、, and 25, +5, 0 F (32, +2.8, 0 C) after a 1 h exposure at each ofthese temperatures. The switch shall be electrically and mechanically operable during each of these cycles.4.2 This same switch shall be used for the endurance test described below.5. Endurance Test Setup5.1 The switch shall be set up
8、to operate its design electrical load.5.2 The test shall be set up to operate the switch for the prescribed number of completed cycles.One complete cycle shall consist of sequencing through each position (with dwell in each position) and returnwithout dwell in intermediate positions to the initial p
9、osition.SAE J234 Revised OCT77-2-The test equipment shall be so arranged as to provide the following mechanical time requirements:Travel Time0.10.5 s (time from one position to the next).Dwell Time1.02.0 s (time in each position).5.3 During the test the switch shall be operated at 6.4 V d-c for a 6
10、V system, 12.8 V d-c for a 12 V system, or 25.6V d-c for a 24 V system.These voltages shall be measured at the input termination on the switch.The power supply shall not generate any adverse transients not present in motor vehicles and shall complywith the following specifications:a. Output CurrentC
11、apable of supplying the continuous current of the design electrical load.b. RegulationDynamicThe output voltage at the supply shall not deviate more than 1.0 V from zero to maximumload (including inrush current) and should recover 63% of its maximum excursion within 100 ms.StaticThe output voltage a
12、t the supply shall not deviate more than 2% with changes in static loadfrom zero to maximum (not including inrush current), and means shall be provided to compensate forstatic input line voltage variations.c. Ripple VoltageMaximum 300 mV peak to peak.6. Endurance Requirements6.1 The switch shall be
13、capable of satisfactorily operating for 10,00 complete cycles at a temperature of 75 10 F(24 5.5 C).6.2 The average voltage drop from the input terminal(s) to the corresponding output terminal(s) shall be measuredbefore and after the endurance test and shall not exceed 0.30 V (the average of three c
14、onsecutive readings) atdesign load. If wiring is an integral part of the switch, the voltage drop measurement shall be made including 3in. of wire on each side of the switch; otherwise, measurement shall be made at switch terminals.7. Combination Windshield Wiper and Washer SwitchThe same combinatio
15、n switch shall be used for thetest of each function. If the washer and wiper functions are mechanically coordinated, the functions shall betested simultaneously. The washer switch shall meet the requirements of this recommended practice. Thewiper switch shall meet the requirements of SAE J112a (Nove
16、mber, 1971).8. Notes8.1 Marginal IndiciaThe change bar (l) located in the left margin is for the convenience of the user in locatingareas where technical revisions have been made to the previous issue of the report. An (R) symbol to the leftof the document title indicates a complete revision of the
17、report.PREPARED BY THE SAE ELECTRICAL EQUIPMENT COMMITTEESAE J234 Revised OCT77RationaleNot applicable.Relationship of SAE Standard to ISO StandardNot applicable.ApplicationNot applicable.Reference SectionSAE J112a NOV71Electric Windshield Wiper SwitchDeveloped by the SAE Electrical Equipment Committee
