| 摘要 |
The inner structure of the backrest is made of an ergonomically shaped flexible profile (10) divided into a multitude of horizontally positioned chambers (12). Every second chamber (12) is fitted with a strip-shaped support element (16). The rear surface is provided with several horizontal grooves (24) matching the shape of tongues (22) horizontally arranged across the front of a flexible support layer (18) to be attached to the rear of the structure (10). |
