| 摘要 |
The post device (1) has post units (3,4) that are connected via post bolster (2). A surface of each post unit is coated with an elastic material. A head-side section (6) of an element (5) is provided with protruding and recessed portions, and the head-side section is co-defined with surfaces (7,8) of post bolster during operating state of the device. |
