Windscreen Wiper Connecting Device with Mirror-Symmetrical Pivot Holes

The connecting device is designed with two transverse holes positioned symmetrically on opposite sides of the longitudinal centerline. This allows the same connecting device to accommodate both types of oscillating arms (with pivot pins extending in opposite directions) by selecting the appropriate hole for insertion, thereby achieving universal compatibility without requiring different connecting devices for different applications.

While the overall connecting device maintains symmetry for universality, the specific configuration of the two holes creates an asymmetric arrangement relative to the pivot pin insertion direction. This allows the installer to select the correct hole based on the oscillating arm type, enabling adaptation to different configurations while maintaining a single standardized connecting device design.

The spoiler is designed with an asymmetric geometry that does not possess mirror symmetry about the longitudinal centerline. This asymmetric shape serves as a mechanical guide, ensuring that when the connecting device is properly installed through the correct hole, the spoiler automatically orients itself in the correct position. This eliminates the need for complex orientation procedures during replacement while maintaining precise spoiler alignment.

Instead of providing complex alignment features or markings to guide correct installation, the patent uses the inverse approach: the asymmetric spoiler geometry itself becomes the orientation reference. The spoiler's unique shape prevents incorrect installation, and the correct orientation is achieved naturally through the mechanical constraints of the asymmetric design rather than through active alignment procedures.