Patent ID: 7832800
Filing Date: 2010-11-16
Classification: A47C

Abstract:
1. A massage chair with slant angle adjustable chair frame comprises: a basic frame including a base frame and two support frames arranged in parallel and stretching up from the base frame, said base frame being placed on a level plane so as to stabilize said basic frame, each support frame having a first pivot portion and a second pivot portion; a chair frame including at least one set of massage device, and a seat frame having two side frames, each side frame including a third pivot portion and a fourth pivot portion, said third pivot portion and said fourth pivot portion being closer to the base frame than the first pivot portion and the second pivot portion; two first connecting members, each said connecting member including a top end and a bottom end, said top end being pivotally connected to the first pivot portion of said corresponding support frame, said bottom end being pivotally connected to the third pivot portion of said side frame by an axis; two second connecting members, each said second connecting member including one top end and one bottom end, said top end being pivotally connected to the second pivot portion of said one corresponding support frame, said bottom end being pivotally connected to the fourth pivot portion of said one corresponding side frame; and an linearly retractable actuator including a first end and a second end, said first end can make a relatively linear retraction to said second end, said first end being pivotally connected to said basic frame by a shaft, said second end being pivotally connected to the chair frame; said basic frame, said first connecting member, said second connecting member and said chair frame being pivotally connected to form a four-linkage mechanism.