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US 2020/0049307 A1Published application
Extension arm device with reinforcement structure
AssigneeModernsolid Industrial Co., Ltd.
InventorChin-Jui HUNG
Life of this patent
Estimating the term…
Abstract
An extension arm device includes first and second joint brackets and two linking arms pivotally connected therebetween to form a four-linkage mechanism. Each linking arm includes two parallel side walls and a cover wall interconnecting the side walls. Each side wall of at least one linking arm has a side reinforcement structure which is embossed from an inner or outer wall surface and which extends in a lengthwise direction so as to enhance the structural stiffness of the side wall.
Claims10
An extension arm device comprising:
- a joint unit including first and second joint brackets which are spaced apart from each other;
- and
- two linking arms each pivotally connected between said first and second joint brackets such that said linking arms and said first and second joint brackets are cooperatively formed as a four-linkage mechanism, each of said linking arms including two side walls which are spaced apart from each other in a widthwise direction by a first width and extend parallel to each other in a lengthwise direction, and a cover wall which interconnects said side walls and extends in the lengthwise direction, each of said side walls having an inner wall surface which faces said inner wall surface of an opposite one of said side walls, and an outer wall surface which is opposite to said inner wall surface in the widthwise direction, each of said side walls of at least one of said linking arms having at least one side reinforcement structure which is embossed from either one of said inner and outer wall surfaces and which extends in the lengthwise direction.
Dependencies are inferred from the claim text.