| 摘要 |
The invention relates to a medical or dental treatment chair ( 1 ) having a seat part ( 2 ), a back part ( 4 ), a carrier part ( 16 ) arranged on the back part ( 4 ), an intermediate lever ( 23 ) which with its one end is pivotably connected with the carrier part ( 16 ), a head support lever ( 24 ) which with its one end is pivotably connected to the other end of the intermediate lever ( 23 ) and carries a head support pad ( 21 ), and an intermediate lever adjustment motor (M 3 ) which is effective between the carrier parts ( 16 ) and the intermediate lever ( 23 ). For the support function there is provided a head support lever adjustment motor (M 4 ) which is effective between the intermediate lever ( 23 ) and the head support lever ( 27 ).
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