Seat chassis
The utility model discloses a seat chassis which comprises a seat back fixing frame, a base, a movable disc, a main spring and an adjusting handle, the seat back fixing frame is used for fixing a seat back, the main spring is arranged below the base, the main spring is used for controlling the incli...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The utility model discloses a seat chassis which comprises a seat back fixing frame, a base, a movable disc, a main spring and an adjusting handle, the seat back fixing frame is used for fixing a seat back, the main spring is arranged below the base, the main spring is used for controlling the inclination force of the seat back fixing frame and promoting the seat back to return to the original position, and the seat chassis further comprises a hinged frame. The upper end of the hinged frame abuts against the bottom face of the movable disc, the hinged frame moves downwards relative to the base and drives the movable disc to turn over by a certain angle relative to the base, meanwhile, the main spring is compressed, and when the chair back is installed on the chair back fixing frame, the chair back can be tightly attached to the back of a person along with the action of the back of the person through left-right swing and up-down swing of the back of the person. And support for various sitting postures is provi |
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