Wiper arm, in particular for a motor vehicle and method for producing the same
OwnerJoachim Zimmerinventor
Life of this patent
Estimating the term…
Abstract
A wiper arm (10) and a method for producing a wiper arm (18) are proposed, in which the wiper arm (18) comprises a U-shaped profile section (24) and a bottom (34), which is secured at some points to the profile section (24).
Claims12
A wiper arm, in particular for a motor vehicle, which is capable of connecting a wiper shaft (16) that is movable in pendulum fashion to a wiper blade (20), and which comprises at least one at least partly inverted-U-shaped profile section (32), with a base (36) and two lateral flanks (38), characterized in that the profile section (32) is provided at least in part with at least one bottom (34), which is secured to the lateral flanks (38) only at some points.
The wiper arm of one of the foregoing claims, characterized in that the bottom is welded to the lateral flanks (38), preferably in a projection welding method.
The wiper arm of one of the foregoing claims, characterized in that the bottom (34) has lugs (42), along its long sides (41) that are oriented toward the lateral flanks (38).
The wiper arm of one of the foregoing claims, characterized in that at least one and preferably two gaps (44), in particular facing one another, are provided between the lateral flanks (38) and the bottom (34).
The wiper arm of one of the foregoing claims, characterized in that the bottom (34) has at least one recess (50) for a spring device (28).
The wiper arm of one of the foregoing claims, characterized in that the bottom (34) has at least one receptacle (48) for a spring device (28).
The wiper arm of one of the foregoing claims, characterized in that the lateral flanks (38) protrude beyond the bottom (34).
The wiper arm of one of the foregoing claims, characterized in that the wiper arm (18) comprises zinc-plated sheet metal.
The wiper arm of one of the foregoing claims, characterized in that the bottom (34) has holes to reduce the weight.
A method for producing a wiper arm (18), in particular a wiper arm of one of the foregoing claims, having at least the following steps:
- stamping out and bending a substantially U-shaped profile section (32) having a base (36) and two lateral flanks (38);
- making swaged features on the lateral flanks (38);
- stamping out a bottom (34);
- inserting the bottom (34) into the profile section (32);
- fastening the bottom to at least one lateral flank (38) by welding.
A method for producing a wiper arm (18), in particular a wiper arm of one of the foregoing claims, having at least the following steps:
- stamping out and bending a substantially U-shaped profile section (32) having a base (36) and two lateral flanks (38);
- making swaged features on the lateral flanks (38);
- stamping out a bottom (34);
- inserting the bottom (34) into the profile section (32);
- fastening the bottom to at least one lateral flank (38) by means of further swaged features (40).
Dependencies are inferred from the claim text.