Patent ID: 8104839
Filing Date: 2012-01-31
Classification: A47C

Abstract:
1. A chair, comprising: a support frame; a seat frame detachably mounted on the support frame; a backrest frame detachably mounted on the support frame and located above the seat frame; wherein the support frame includes two side support racks; the seat frame is detachably mounted between the two side support racks of the support frame; the backrest frame is detachably mounted between the two side support racks of the support frame; each of the two side support racks of the support frame has an inner side provided with two fixing blocks which protrude outward from each of the two side support racks of the support frame; the seat frame has two opposite ends each supported by the fixing blocks of a respective one of the two side support racks; each of the fixing blocks of each of the two side support racks is provided with a positioning hole; each of the two opposite ends of the seat frame has a bottom provided with two threaded tubes each inserted into the positioning hole of a respective one of the fixing blocks; the chair further comprises four threaded locking knobs each screwed into a respective one of the threaded tubes of the seat frame and each abutting a respective one of the fixing blocks; the seat frame is releasably locked between the two side support racks of the support frame; each of the two side support racks of the support frame has an upper portion provided with a locking slit; the backrest frame has an upper portion having two opposite ends each provided with a locking plate detachably locked in the locking slit of a respective one of the two side support racks; the upper portion of the backrest frame is releasably locked between the two side support racks of the support frame; the locking plate of the backrest frame has a bottom provided with a locking groove detachably locked onto the locking slit of the respective side support rack; the backrest frame has a lower portion having two opposite ends each provided with a fixing plate detachably locked onto a respective one of the two side support racks; the lower portion of the backrest frame is releasably locked between the two side support racks of the support frame; each of the two side support racks of the support frame has a mediate portion provided with a screw bore; the fixing plate of the backrest frame is located outside of the respective side support rack; the fixing plate of the backrest frame is provided with a fixing hole aligning with the screw bore of the respective side support rack; the chair further comprises two threaded fastening knobs each initially extending through the fixing hole of the respective fixing plate and each then screwed into the screw bore of the respective side support rack to lock the respective fixing plate of the backrest frame onto the respective side support rack of the support frame.