| 摘要 |
A track device comprises an outer track 10 with two stops 11, a middle track 20 with two slots 22 and an inner track 30, a resilient member 50 (60 figure 7) having an engaging portion 51 (61 figure 7) and two legs 52 (62 figure 7) mounted to the middle track, where the two legs extend through the slots of the middle track, each leg having an engaging section, such that when the middle and inner tracks are pulled outward to a predetermined position, the engaging sections of the legs abut against the stops of the outer track to prevent inward movement of the middle track during use. |
