1、GM DAEWOO Auto & Technology EDS Engineering, GM DAEWOO Auto & Technology Standards TEST PROCEDURE OF SEAT UNDER TRAY Do Not Use on New Programs. Being Replaced by GMW14862 EDS-T-4578 ISSUED DATE: 2000. 10. 14 REVISED DATE: 2008. 04. 04 VERSION: 3 (Superceded) EDS-T-4578TEST PROCEDURE OF SEAT UNDER T
2、RAY PAGE: 1/3 ISSUED DATE: 2000. 10. 14 REVISED DATE: 2008. 04. 04 VERSION: 3 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 It is Superceded for all future projects and replaced by GMW14862. 1. PURPOSE This standard aims at specifying t
3、he method of identifying the durability and strength of the seat under tray that is installed to the seat or body. 2. SCOPE This standard applies only to the seat under tray for passenger cars. For further details not specified here, follow the directions in the drawings. 3. TEST SAMPLES At least 3
4、new seats under tray assemblies shall be tested. 4. TEST EQUIPMENT AND JIG 4.1. Under tray durability test equipment 4.1.1. Jig with which to fix the tray in the vehicle condition 4.1.2. Durability tester 4.1.3. Loading and length measuring device capable of measuring loads with accuracy not exceedi
5、ng 0.1kgf and length not exceeding 0.1mm 4.1.4. Push & pull gauge capable of loading 20 kgf 4.1.5. Recorder capable of recording load and displacement and of plotting load to displacement graph 4.1.6. Chamber permitting setting up to 70 and down to -30 4.2. Under tray inside impact strength test equ
6、ipment 4.2.1. Jig with which to fix the tray in the vehicle condition 4.2.2. 500g weight 4.2.3. Chamber permitting setting down to -30 4.3. Under tray stopper and lever lock strength test equipment 4.3.1. Loading device capable of loading at least 50 kgf 4.3.2. Loading and length measuring device ca
7、pable of measuring loads with accuracy not exceeding 0.1kgf and length not exceeding 0.1mm EDS-T-4578TEST PROCEDURE OF SEAT UNDER TRAY PAGE: 2/3 ISSUED DATE: 2000. 10. 14 REVISED DATE: 2008. 04. 04 VERSION: 3 GM DAEWOO Auto & Technology 4.3.3. Recorder capable of recording load and displacement and
8、of plotting load to displacement graph 5. TEST PROCEDURES 5.1. Under tray durability test method 5.1.1. Install the under tray onto the jig. 5.1.2. Using the push & pull gauge, measure the open, closed effort and lever operating effort before durability test. 5.1.3. With movement at a speed of 6cpm
9、from the foremost to rearmost points and then from the rearmost to foremost points until the stopper is touched in parallel with the guide with respect to the under tray center as 1 cycle, perform 3000 cycles at a normal temperature, 500 cycles at 70 and another 500 cycles at -30. 5.1.4. Using the p
10、ush & pull gauge, measure the open, closed effort and lever operating effort after durability test. 5.2. Under tray inside strength test 5.2.1. Install the under tray onto the jig. 5.2.2. Fix the under tray as shown in Fig 1 so that the open side faces down. 5.2.3. Put the 500g weight into the tray
11、and fix it as shown in Fig 1. 5.2.4. After exposing the tray to -30 for 3hr, unlock it inside the -30 chamber to drop to the full stroke. Figure 1 EDS-T-4578TEST PROCEDURE OF SEAT UNDER TRAY PAGE: 3/3 ISSUED DATE: 2000. 10. 14 REVISED DATE: 2008. 04. 04 VERSION: 3 GM DAEWOO Auto & Technology 5.3. Un
12、der tray stopper and lever lock strength test method 5.3.1. Under tray stopper strength test method (1) Install the under tray onto the jig. (2) With the tray full open, apply the load at the under tray center in parallel with the guide using the loading device. (3) Measure the load and displacement
13、 and plot the load to displacement graph. 5.3.2. Under tray lever lock strength test method (1) Install the under tray onto the jig. (2) With the tray closed, apply the load at the under tray center in parallel with the guide using the loading device. (3) Measure the load and displacement and plot t
14、he load to displacement graph. 6. EVALUATION OF TEST 6.1.1. Before and after the durability test, the tray open and closing effort shall not exceed 15N. 6.1.2. The lever operating effort shall not exceed 20N. 6.1.3. After durability test, the tray shall operate normally without developing any damage and crack. 6.1.4. After low impact resistance test, the tray shall operate normally without developing any damage and crack. 6.1.5. There shall be no noise during durability test. 6.1.6. The under tray stopper and lever lock strength shall meet the requirements in drawings.
