A windscreen wiper device

A windscreen wiper device comprising an elastic, elongated carrier element and an elongated wiper blade of a flexible material, which can be placed in abutment with a windscreen to be wiped, which wiper blade is of the flat blade type and includes at least one longitudinal groove, in which groove a longitudinal strip of the carrier clement is disposed, said windscreen wiper device comprising:

• a connecting device;
• and
• a joint part detachably and pivotally connected to said connecting device about a pivot axis;
• said joint part comprising at least one resilient tongue engaging in a correspondingly shaped hole provided in an oscillating arm,
• wherein said at least one resilient tongue is rotatable along an hinge axis between an outward position retaining the wiper blade onto the oscillating arm and an inward position releasing the wiper blade from the oscillating arm,
• wherein said oscillating arm has an at least substantially U-shaped cross-section at a location of its connection to said joint part, and
• wherein at least one leg of said U-shaped cross-section of said oscillating arm comprises an inwardly extending protrusion cooperating with a bottom surface of a side wall of said joint part near an extremity of said joint part facing away from said free end of said oscillating arm.