US Patent 12018707 Mechanical connection arrangement for panels

A mechanical connection arrangement for panels, includes a first panel, a second panel and a mechanical locking device for locking the first panel to the second panel. A surface of the first panel and a surface of the second panel are parallel and in contact in a locked position of the first and second panels. The mechanical locking device includes at least one rod-shaped element at said surface of the first panel and at least one corresponding insertion recess at said surface of the second panel. The rod-shaped element is configured to be inserted in the insertion recess. The rod-shaped element extends at a first angle from the surface of the first panel and the insertion recess extends into the second panel at a second angle from the surface of the second panel. The difference between the first angle and the second angle is between 0.5° and 6°.