1、GM DAEWOO Auto & Technology EDS Engineering, GM DAEWOO Auto & Technology Standards THE TEST PROCEDURE OF FORWARD AND BACKWARD STRENGTH IN LIGHT LOAD FOR SEAT BACK Do Not Use on New Programs. Being Replaced by GMW14610 EDS-T-4516 ISSUED DATE: 1998. 02. 26 REVISED DATE: 2008. 10. 15 VERSION: 3 (Superc
2、eded) EDS-T-4516THE TEST PROCEDURE OF FORWARD AND BACKWARD STRENGTH IN LIGHT LOAD FOR SEAT BACK PAGE: 1/2 ISSUED DATE: 1998. 02. 26 REVISED DATE: 2008. 10. 15 VERSION: 3 GM DAEWOO Auto & Technology Note: This standard may be applied only for current project (incl. T255 Program). It is Superceded for
3、 all future projects and replaced by GMW14610. 1. PURPOSE This procedure verifies the strength of the forward and the backward strength on the seat back upon light load. 2. SCOPE Front seats of passenger cars 3. TEST SAMPLES Minimum three new seat frames 4. TEST EQUIPMENT AND JIG 4.1. Jig for fittin
4、g seats in actual field conditions 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 0.1 kgf and 0.1 mm respectively. 4.4. Weight loading equipment Equipm
5、ent capable of loading the weight greater than 15 kgf 4.5. Recorder A recorder capable of recording the weight and the displacement in weight vs. displacement graphs 4.6. Weight loading jig A jig for concentration of the weight to a single point 5. METHODS AND SPECIFICATIONS OF TEST 5.1. Preparation
6、 5.1.1. Fit the seat-fixing jig on the leveling surface table, and then mount a seat on the jig. 5.1.2. Set the angle of the seat back to the value specified in the design standard. If the design standard is unknown, set the angle at 25 28 backward. 5.1.3. Set the adjuster systems of the seat as fol
7、lows: (1) Guide rail: the center position EDS-T-4516THE TEST PROCEDURE OF FORWARD AND BACKWARD STRENGTH IN LIGHT LOAD FOR SEAT BACK PAGE: 2/2 ISSUED DATE: 1998. 02. 26 REVISED DATE: 2008. 10. 15 VERSION: 3 GM DAEWOO Auto & Technology (2) Height adjuster system: the lowest position 5.2. Test Method 5
8、.2.1. Load the weight of 15 kgf horizontally on the center point of the seat back upper crossbar both in forward and backward directions as shown in fig. 1. Measure the displacement and the load data in the displacement vs. load graphs. 5.2.2. Measure the load on the weight loading point in the dire
9、ction of operation of the seat back. 5.3. Evaluation 5.3.1. The sum of maximum transformation in the forward and the backward direction at 5 kgf shall be smaller than 10 mm. 5.3.2. The sum of maximum transformation in the forward and the backward direction at 15 kgf shall be smaller than 20 mm. Fig. 1
