| 摘要 |
<p>A support frame for backrest foldable chair includes a pair of front legs (1), a pair of back legs (2), a pair of chair top supporting rods (3), and a pair of backrest rods (8). The upper part of the back leg hinges to the sliding sleeve (5) sleeved on the front leg. There is a sleeve limit component (6) in the front leg. The middle part of the chair top supporting rod (3) hinges to the front leg, and the back part of the chair top supporting rod (3) hinges to the middle part of the back leg. There is a transverse support part between the two side support frames. The side support frame comprises the front legs, the back legs, the chair top supporting rods, and the back rods.</p> |
