SCREW ROD LINEAR PUSH-TYPE HARDNESS ADJUSTMENT APPARATUS, AND SEAT AND MATTRESS THEREFOR

• Main Author: LUO, Zhibao
• Format: Patent
• Language: Chinese; English; French
• Published: 29.08.2019
• Subjects: BEDS; CHAIRS; COFFEE MILLS; DOMESTIC ARTICLES OR APPLIANCES; FURNITURE; HUMAN NECESSITIES; SOFAS; SPICE MILLS; SUCTION CLEANERS IN GENERAL

The present invention relates to a screw rod linear push-type hardness adjustment apparatus, comprising a soft bag, elastic pieces, a movable plate, a screw rod and a fixed plate, the soft bag covering a surface, the fixed plate being fixedly arranged with respect to a piece of upholstered furniture, the screw rod being positioned and rotated on the fixed plate, the screw rod being screwed to the movable plate so as to drive the movable plate to move back and forth between the soft bag and the fixed plate, the elastic pieces being arranged between the soft bag and the movable plate, one end of each elastic piece having an elastic action of the soft bag, the other end of each elastic piece having an elastic action on the movable plate. The screw rod is manually or electrically rotated so as to change the distance between the soft bag and the movable plate, thereby changing the tightness of the elastic pieces, and adjusting the hardness. The screw rod drives the movable plate, so that the distance between the m