1、GM DAEWOO Auto & Technology EDS Engineering, GM DAEWOO Auto & Technology Standards TEST PROCEDURE OF DOWNWARD STRENGTH FOR HEADREST Do Not Use on New Programs. Being Replaced by GMW14604 EDS-T-4519 ISSUED DATE: 1998. 02. 26 REVISED DATE: 2008. 04. 04 VERSION: 4 (Superceded) EDS-T-4519TEST PROCEDURE
2、OF DOWNWARD STRENGTH FOR HEADREST PAGE: 1/2 ISSUED DATE: 1998. 02. 26 REVISED DATE: 2008. 04. 04 VERSION: 4 GM DAEWOO Auto & Technology Note: This standard may be applied only for current project (incl. T255 Program). It is Superceded for all future projects and replaced by GMW14604. 1. PURPOSE This
3、 procedure verifies the strength of locking devices in the headrest sleeves and welding of the sleeve brackets. 2. SCOPE All types of passenger car seats with detachable headrests 3. TEST SAMPLES Minimum three new headrests and fixtures respectively 4. TEST EQUIPMENT AND JIG 4.1. Jig for fitting a s
4、eat back frame 4.2. Leveling surface table 4.3. Measuring instruments for loads and length The measuring instruments shall be capable of measuring the load and the length displacement with maximum resolution of 0.5 kgf and 0.5 mm respectively. 4.4. Weight loading equipment Equipment capable of loadi
5、ng the weight greater than 80 kgf 4.5. Weight loading jig Round plate with diameter of 100 mm 5. METHODS AND SPECIFICATIONS OF TEST 5.1. Preparation 5.1.1. Fit the seat back frame-fixing jig on the leveling surface table, and then mount a headrest on the jig. 5.1.2. Set the headrest at the uppermost
6、 position. 5.2. Test Method 5.2.1. Load the weight of 80 kgf on the headrest downward in the axial direction of the headrest as shown in fig. 1. EDS-T-4519TEST PROCEDURE OF DOWNWARD STRENGTH FOR HEADREST PAGE: 2/2 ISSUED DATE: 1998. 02. 26 REVISED DATE: 2008. 04. 04 VERSION: 4 GM DAEWOO Auto & Technology Figure 1 5.3. Evaluation 5.3.1. The headrest shall be free of abnormal operation. 5.3.2. The sleeve-locking device shall be free of defect. 5.3.3. The headrest shall be free of down or lock.
