Guidance element with internal conduit between two constructional parts

Guidance element between two constructional parts, pivotable around a pivot axis, includes a flexible routing element, and first and second hinging parts. The flexible routing element includes a flexible bellows. The flexible bellows is attached to an inward surface of the first hinging part on a first end and is attached to an inward surface of the second hinging part on a second end. To form a continuous internal conduit, the first and second hinging parts each are adapted with a conduit and the flexible bellows is arranged as flexible conduit. The flexible routing element further includes a first leaf spring, wherein the first leaf spring is extending parallel to the flexible bellows, which is attached on its periphery to an edge of the first leaf spring. The flexible routing element intersects the pivot axis perpendicularly. The pivot axis coincides with the width of the first leaf spring.