| 摘要 |
The invention relates to a vertically adjustable cushion device to be arranged on the back (1) of a chair to support a person seated in the chair. The cushion device is in the form of separate, independent unit to be placed inclined against the back (1) of the chair and comprises a cushion (4) and a cooperating support means (5) intended in use to support the cushion (4) in a desired vertical position relative to the seat (3) of the chair. The cushion (4) and the support means (5) are mutually continuously displaceable with respect to each other. A lower portion (6) of the support means (5) is provided for frictional engagement with the seat (3) of the chair. The engagement between the support means (5) and the cushion (4) is produced preferably by an adapted frictional engagement between an upper portion of the support means and a pocket (8), which is arranged on the rear side (10) of the cushion (4) and in which the support means (5) is inserted, optionally by also using detachable tightening straps.
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