Patent ID: 8671505

Claim:
A windshield wiper blade assembly, comprising: an elastic wiper blade having a top end; a linking mechanism including a pivot joint, a first arm having two opposite first side walls, a second arm having two opposite second side walls, and a third arm having two opposite ends secured to said top end of said wiper blade and a middle portion disposed between said ends of said third arm, said first, second and third arms being stacked one above another, said pivot joint having two opposite side walls, two opposite first pivot studs, and two opposite second pivot studs, each of said side walls of said pivot joint having inner and outer faces, said first pivot studs being spaced apart from each other and protruding respectively from said inner faces of said side walls of said pivot joint toward each other along an axis, said second pivot studs protruding respectively from said outer faces of said side walls of said pivot joint away from each other along the axis, each of said first side walls having a pivot end that is formed with an outer pivot hole, each of said second side walls having a pivot end and a middle portion that is formed with an inner pivot hole, said middle portion of said third arm being disposed between and pivoted to said pivot ends of said second side walls, said side walls of said pivot joint being disposed between said pivot ends of said first side walls, said middle portions of said second side walls being disposed between said side walls of said pivot joint, said first pivot studs extending into said inner pivot holes in said middle portions of said second side walls, respectively, and said second pivot studs extending into said outer pivot holes in said pivot ends of said first side walls, respectively, so as to permit said first side walls to be pivoted to said second side walls; and a middle housing covering a middle portion of said wiper blade, said middle housing having a portion that has an inverted U-shaped cross section, that defines an inner space therein, and that further has two opposite side walls and a limiting wall disposed in said inner space in said middle housing between said side walls of said middle housing and having a side surface, said first arm further having a top wall interconnecting said first side walls, said top wall being punched and pressed to form a flexible tab bent therefrom, said flexible tab having a connecting end extending from said top wall, and a raised end opposite to said connecting end and abutting against said limiting wall in a snap-fit engaging manner.