Back cushion

• Main Author: ZHOU DONGMIN
• Format: Patent
• Language: Chinese; English
• Published: 07.09.2016
• Subjects: BEDS; CHAIRS; COFFEE MILLS; DOMESTIC ARTICLES OR APPLIANCES; FURNITURE; HUMAN NECESSITIES; PERFORMING OPERATIONS; SEATS SPECIALLY ADAPTED FOR VEHICLES; SOFAS; SPICE MILLS; SUCTION CLEANERS IN GENERAL; TRANSPORTING; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDEDFOR; VEHICLES IN GENERAL

The invention discloses a back cushion. The back cushion comprises an air bag provided with a cavity. An air valve communicated with the cavity is arranged on the air bag. The back cushion is characterized in that fillers made of elastic materials are arranged in the air bag. The back cushion has the advantages that the back cushion is disposed between the lumbar vertebra and a chair, the lumbar vertebra squeezes the air bag to exhaust the air bag after the air valve is opened, and the air bag is compressed to the size suitable for the lumbar vertebra; the air valve is closed, the size of the air bag is kept unchanged, and comfortableness is improved; when the air bag needs to be readjusted, the air valve is opened, and the original shape of the air bag is recovered under the action of the elastic fillers. 本发明公开了种靠垫，包括气囊，所述气囊设有腔体，所述气囊上设有导通腔体的气阀，其特征在于：所述气囊中还设有填充物，所述填充物由弹性材料构成。通过上述方案可知，靠垫置于腰椎和靠椅之间，打开气阀，腰椎挤压气囊实现气囊排气，使得气囊压缩到适合腰椎的大小，关上气阀，气囊大小直保持，增加舒适性，当气囊需要重新调整时，打开气阀，在弹性填充物的作用下，气囊恢复原始形状。