Length-adjustable drawbar for connecting e.g. lorry trailer with commercial vehicle, has outer pipe firmly connected with inner pipe, and displaceable middle pipe arranged between inner and outer pipes in longitudinal direction

摘要

The drawbar (6) has an outer pipe (7) firmly connected to an inner pipe (8). A displaceable middle pipe (9) is arranged between the outer pipe and the inner pipe in a longitudinal direction. The inner, the middle and the outer pipes comprise respective tube bores that are formed at respective top surfaces for receiving a common clutch bolt. The middle pipe comprises the clutch bolt in a region to upstream the respective tube bore when the middle pipe is inserted in a thickening part i.e. wear plate. Independent claims are also included for the following: (1) a lorry trailer comprising a box-shaped structure (2) a door for a box-shaped structure of a commercial motor vehicle.