| 摘要 |
PURPOSE: A door for buses is provided to enable passengers to safely and easily take out clothes or shoulder straps caught between doors without damaging the clothes or the shoulder straps. CONSTITUTION: A door for buses comprises a border frame and a roller part. One end of the border frame is formed with a T-shaped joint protrusion. The roller part is combined in the border frame and forms one sidewall of a door. The roller part includes roller supports (210, 220, 230), rollers (310, 320), and ball bearings (410, 420, 430, 440). Each one end of the roller supports is formed with T-shaped joint grooves (211, 221, 231) to be combined with the T-shaped joint protrusions. The rollers are arranged between the roller supports. The ball bearings are arranged between the rollers and the roller supports. |
