Wiper arm especially for cleaning windshields of motor vehicles

An automotive windshield wiper arm assembly, said assembly comprising an elongated fixing part, a first longitudinal end of said fixing part having means for mounting said part to a wiper shaft and means at a second longitudinal end securing said fixing part to a joint piece, the joint piece receiving a wiper rod, said fixing part manufactured from sheet metal and including an upper sheet metal section with a lower face and an outer edge, and a lower sheet metal section with an upper face integrally connected with said upper sheet metal section such that a folding edge is formed along a portion of an edge of said fixing part, said upper face of said lower sheet metal section parallel with said lower face of said upper sheet metal section at said first end of said fixing part to create at least a twofold thickness of said sheet metal, a first opening in said upper sheet metal section aligned with a second opening in said lower sheet metal section and adapted to receive the wiper shaft, wherein, at least at said first end, said upper sheet metal section includes a longitudinal side cheek extending axially downwardly from said outer edge generally perpendicular to said lower face, said upper sheet metal section axially supported by said lower sheet metal section independently of said cheek with said upper face of said lower metal section lying directly on and in contact with said lower face of said upper metal section.

An automotive windshield wiper arm assembly, said assembly comprising an elongated fixing part, a first longitudinal end of said fixing part having means for mounting said part to a wiper shaft and means at a second longitudinal end securing said fixing part to a joint piece, the joint piece receiving a wiper rod, said fixing part manufactured from sheet metal and including an upper sheet metal section with a lower face and an outer edge, and a lower sheet metal section with an upper face integrally connected with said upper sheet metal section such that a folding edge is formed along a portion of an edge of said fixing part, said upper face of said lower sheet metal section parallel with said lower face of said upper sheet metal section at said first end of said fixing part to create at least a twofold thickness of said sheet metal, a first opening in said upper sheet metal section aligned with a second opening in said lower sheet metal section and adapted to receive the wiper shaft, wherein said upper sheet metal section includes, at least at said first end, a first longitudinal side cheek forming part of said securing means which extends axially downwardly from said outer edge generally perpendicular to said lower face between said first and second longitudinal ends, said first cheek having a greater axial extent at said second longitudinal end, said securing means also including an opposing second longitudinal side cheek formed at said second longitudinal end integral with said upper metal section, a transition zone formed between an outer edge of said lower sheet metal section and a corresponding edge of said opposing side cheek, material from said lower sheet metal section being used to form said opposing side cheek along said folding edge.