Patent ID: 7510243
Filing Date: 2009-03-31
Classification: A47C,Y10T

Abstract:
1. A folding and fixing structure of a chair backrest, comprising: a backrest, both sides of an end of the backrest being fixed with a pivotal member having a pivotal portion and a locking portion, respectively; two armrests, each pivotal portion of the backrest being pivotally disposed on each armrest, each armrest having a clutch member adjacent to the pivotal portion of the backrest, each clutch member being disposed with a clutch portion; when the backrest and the armrests is rotatably moved with respect to the pivotal portions to a predetermined angle, the locking portions will be restricted by the clutch members disposed in the armrests or will be disengaged from clutch members by driving the clutch members with the clutch portions; one side of each armrest is defined with a containing portion, each corner of the containing portion is disposed with a block, respectively, a cover covers the blocks of each containing portion, each clutch member is received between the blocks of each containing portion, and one end of each armrest adjacent to the containing portion is defined with a pivotal hole for insertion of the pivotal portion of each pivotal member of the backrest, respectively.