Wiper device having improved vibration prevention of wiper strip

A wiper device for vehicles, comprising:

• a yoke for supporting a wiper strip;
• an auxiliary lever that comprises a coupling protrusion coupled to a coupling hole prepared in the yoke and is formed of synthetic resin;
• and
• a main lever that comprises an assembly protrusion coupled to an assembly hole prepared in the auxiliary lever and is formed of the synthetic resin,
• wherein the auxiliary lever further comprises:
• a first vibration prevention portion protrusively formed to contact an upper surface of the yoke on a cross section taken along a width direction of the auxiliary lever in a position where the coupling hole is disposed, wherein the first vibration prevention portion extends in a cantilever form and wherein the first vibration prevention portion is elastically curved in an upper or lower direction of the yoke;
• and
• a second vibration prevention portion in which an outer circumference surface of the coupling protrusion is formed in a tapered form so that the coupling protrusion coupled to the coupling hole is press fit in a direction in which the coupling protrusion is coupled to the coupling hole,
• wherein the auxiliary lever is formed on an upper surface of the first vibration prevention portion to reinforce stiffness of the first vibration prevention portion and comprises a reinforcing rib extending in a longitudinal direction of the auxiliary lever.