| 摘要 |
mechanical engineering; boxes made of blanks. SUBSTANCE: blank has upper panel, pair of side panels and tape handle formed partly from upper panel and partly from side panels. Handle extends through upper panel and it is connected by opposite terminal parts with side panels to provided movement between folded down and raised positions. Each terminal part of handle has flexible lobe to provide gradual increase of stress in handle when the latter is being pulled up. EFFECT: stability of handle to dynamic action, economy of box design. 18 cl, 9 dwg |
