| 摘要 |
<p>Two springs (2,3) spiraling lengthwise parallel to each other and with a mutual clearance from each other extend over the whole vertical length of a backrest. A system (10) of connecting rods consists of three linking points (18,20) on each spring. These linking points define four separate sections (6-9) of the springs. The system of connecting rods includes an upper connecting-rod triangle/wishbone with its connecting-rod arms interlinked in a torque-proof manner and their base designed as a pivot bearing fitted on a free front end of a spring (15).</p> |
