1、 WORLDWIDE ENGINEERING STANDARDS General Specification GMW15987 Test of Switch and Switch Mounting Interface Copyright 2011 General Motors Company All Rights Reserved August 2011 Originating Department: North American Engineering Standards Page 1 of 6 1 Introduction Note: Nothing in this standard su
2、percedes applicable laws and regulations. Note: In the event of conflict between the English and domestic language, the English language shall take precedence. 1.1 Scope. All interior interfaces between switches and switch mountings. 1.2 Mission/Theme. This specification establishes the test conditi
3、ons and requirements for testing interior switch interfaces to confirm the ability of the switch to be fully actuated in a variety of interior applications. 1.3 Classification. Not applicable. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 Extern
4、al Standards/Specifications. None 2.2 GM Standards/Specifications. GMW3059 3 Test Preparation and Evaluation 3.1 Resources. 3.1.1 Calibration. The test facilities and equipment shall be in good working order and shall have a valid calibration label. 3.1.2 Alternatives. Alternative test facilities an
5、d equipment may also be used. However, all measuring variables as specified in this standard shall be determined correctly with respect to their physical definition. 3.1.3 Facilities. GM certified testing facility. 3.1.4 Equipment. 3.1.4.1 Climatic chamber that is large enough to accommodate the tes
6、t apparatus. 3.1.4.2 Durability test stand. 3.1.5 Test Vehicle/Test Piece. Interior switch with mating interior trim plate or panel. A minimum of one part from each cavity is required. 3.1.6 Test Time. Not applicable. 3.1.7 Test Required Information. The number of samples to be tested, Nsample, shal
7、l be determined using the following calculation: Nsample = nswitch ninterior Where: nswitch = the number of cavities in the switch cover tool, and ninterior = the number of cavities in the interior trim plate/panel tool. Refer to Appendix A for an example of how to determine the test sample combinat
8、ions. A minimum of six samples shall be tested. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15987 Copyright 2011 General Motors Compa
9、ny All Rights Reserved August 2011 Page 2 of 6 3.1.8 Personnel/Skills. Not applicable. 3.2 Preparation. 3.2.1 Test Samples. New parts shall be used for each test series described in Table 1. 3.3 Conditions. 3.3.1 Environmental Conditions. All performance requirements shall be fulfilled at the follow
10、ing temperatures: x +80 3 C x -30 3 C x +38 3 C and 95% Relative Humidity (RH) 3.3.2 Test Conditions. Deviations from the requirements of this standard shall have been agreed upon. Such requirements shall be specified on component drawings, test certificates, reports, etc. The tests are to be perfor
11、med “at temperature“ and are to be conducted in the environmental chamber after an appropriate minimum thermal soak time has been reached. The tests are to be performed in the chamber at the temperature specified. Parts to be tested are not to be thermally soaked and, subsequently, removed from the
12、chamber for the duration of the test, i.e., soaking the parts in the chamber and bringing them into an ambient temperature lab for the duration of the test is not permissible under this specification. The tests on each part shall be conducted in the order shown in Table 1. Table 1: Test Conditions 1
13、 Thermal soak for 1 h at +80 3 C 2 Conduct test at +80 3 C and record results 3 Thermal soak for at least 1 h at +23 3 C 4 Thermal soak for 1 h at -30 3 C 5 Conduct test at -30 3 C and record results 6 Thermal soak for at least 1 h at +23 3 C 7 Thermal soak for 1 h at +38 3 C and 95% RH 8 Conduct te
14、st at +38 3 C and 95% RH and record results 3.4 Instructions. Not applicable. 3.5 Data. Not applicable. 3.6 Safety. This standard may involve hazardous materials, operations, and equipment. This standard does not propose to address all the safety problems associated with its use. It is the responsib
15、ility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 3.7 Documentation. Samples of components or material released to this standard shall be tested for conformity with the requirements of this
16、standard and approved by the responsible GM Department prior to the start of delivery of production level components or materials. Any change to the component or material, e.g., design, function, properties, manufacturing process and/or location of manufacture requires a new release of the product.
17、It is the sole responsibility of the supplier to provide the customer, unsolicited, with documentation of any change or modification to the product/process, and to apply for a new release. If not otherwise agreed to, the entire verification test shall be repeated and documented by the supplier prior
18、 to start of delivery of the modified or changed product. In some cases, a shorter test can be agreed to between the responsible GM department and the supplier. 3.7.1 Test Results. Acceptance criteria are given within the text. Appendix B is an example of the data sheet that should be included in th
19、e test report. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15987 Copyright 2011 General Motors Company All Rights Reserved August 201
20、1 Page 3 of 6 4 Requirements and Procedure 4.1 General. For this test, a switch installed into its mating interior trim plate and mounted to a durability fixture is to be used. 4.2 Performance Requirements. During the test and at the end of test, the switch shall be capable of being actuated with a
21、single finger throughout its entire range of motion. 4.3 Actuation Testing. 4.3.1 Preparation. The switch is to be installed into the mating interior trim plate or panel in vehicle position. The switch and the mating interior trim plate or panel shall be checked for conformance to the current develo
22、pment, drawing, and release status before each test. All attachment provisions shall be present, undamaged, and correctly installed. Any modifications shall be noted. Once the status of the parts is confirmed, the parts shall be secured to an appropriate durability fixture. The final results shall n
23、ot be influenced by the fixture used. 4.3.2 Description of Cycles. Thermally soak the part in preparation for testing as shown in Table 1. The switch shall be actuated with a single finger (a single finger and a thumb for rotary switches) through a complete operational cycle (i.e., up and down for a
24、 window switch) for a total of five (5) cycles. For momentary functions of switches, the switch is to return to original position without assistance. There should be minimal time between cycles. 4.3.3 End of Test Requirements. Table 2 is a summary of the results that are required after completion of
25、 the test. Table 2: End of Test Requirements 1 The switch can be actuated in all directions without interference with the trim plate. 2 No cracks of the trim plate. 3 No cracks on the switch housing. 4 Attachment provisions between the switch and the trim plate are not broken. 5 Momentary function o
26、n switches works smoothly and switch returns to neutral position. 4.4 Acceptance Criteria. Interfaces are rated as acceptable and unacceptable based on the end of test requirements. “Unacceptable“ results caused by the switch are to be reported to the electrical group and do not mean “unacceptable“
27、for the interior trim. “Unacceptable“ results caused by the interior trim are to be reported to the interior group and do not mean “unacceptable“ for the switch. In cases where the “unacceptable“ result does not have a clear root cause, the issue is to be reported to both the electrical group and th
28、e interior group. 4.5 Further Requirements. All parts are to be retained at the end of test for review by the electrical validation engineer, interior validation engineer, electrical release engineer, and interior release engineer. 5 Provisions for Shipping Not applicable. 6 Notes 6.1 Glossary. Ther
29、mal Soak: Part is placed in an environmental chamber that is operating at the temperature and humidity referenced in the test description. The part remains in the chamber without being moved or actuated for the time period shown in the test description, no less than 30 minutes prior to start of test
30、. 6.2 Acronyms, Abbreviations, and Symbols. RH Relative Humidity Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15987 Copyright 2011 Gen
31、eral Motors Company All Rights Reserved August 2011 Page 4 of 6 7 Additional Paragraphs 7.1 All parts or systems supplied to this standard must comply with the requirements of GMW3059, Restricted and Reportable Substances for Parts. 8 Coding System This standard shall be referenced in other document
32、s, drawings, etc., as follows: GMW15987 9 Release and Revisions This standard was originated in June 2008. It was first approved by the Interior and Electrical Product Development Teams in July 2008. It was first published in July 2008. Issue Publication Date Description (Organization) 1 JUL 2008 In
33、itial publication. 2 AUG 2011 Removed ambient testing requirement. (Interior Door Trim Global Subsystem Leadership Team) Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WOR
34、LDWIDE ENGINEERING STANDARDS GMW15987 Copyright 2011 General Motors Company All Rights Reserved August 2011 Page 5 of 6 Appendix A: Example of Test Sample Combination Determination Givens: Number of switch cavities (nswitch) = 3 Number of interior trim plate cavities (ninterior) = 5 The total number
35、 of test samples (Nsample) = 3 5 = 15 Table A1: Example of Test Sample Combination Matrix Switch Cavities Interior Trim Cavities A B C D E 1 Sample A1 Sample B1 Sample C1 Sample D1 Sample E1 2 Sample A2 Sample B2 Sample C2 Sample D2 Sample E2 3 Sample A3 Sample B3 Sample C3 Sample D3 Sample E3 Copyr
36、ight General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15987 Copyright 2011 General Motors Company All Rights Reserved August 2011 Page 6 of 6 Append
37、ix B Data Sheet B1: Actuation Testing Project: Test Temperature and RH: Design Status: Date: Test Location: Tester: Part Approval: Interior Approver: Electrical Approver: Sample # Cavity Numbers End of Test Results (Check One) Remarks Switch Trim Plate Acceptable Unacceptable 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
