US Patent 7381085 Connection assembly

A connection assembly having a first connector and a second connector which can be connected to or disconnected from one another by being adjusted along a longitudinal axis, wherein the first connector comprises a first housing which is provided with an elastically deformable locking arm comprising an end connected to the first housing and a free end, as well as a first stop; the second connector comprises a second housing which is provided with a second stop; the first stop and the second stop are designed in such a way that when the two connectors are being connected to one another, they cooperate in such a way that the elastic locking arm 6 temporarily experiences an elastic deformation and, that, after the connected position has been achieved, it experiences an elastic return movement; the second housing comprises a first tunnel portion with a tunnel axis, into which first tunnel portion the locking portion 6, in the connected condition of the two connectors, projects at least partially, which first tunnel portion, at least at one end, is open along the tunnel axis and in which there is arranged the second stop; and which first tunnel portion is associated with a freely oscillating tongue which comprises an end connected to the second housing and a oscillatory end, wherein the elastic return movement of the locking arm which is pre-tensioned when the first connector is being connected to the second connector, causes the tongue to oscillate, thus generating an airborne sound emerging from the first tunnel portion.