Patent ID: 8627540

Claim:
A wiper device having an improved separating function of a wiper blade, the wiper device comprising: the wiper blade comprising: a wiper for cleaning a glass of a vehicle; a lever member supporting the wiper rib; and a rotary shaft disposed across opposite side walls of a penetration hole formed in a center portion of the lever member, the rotary shaft including a non-circular cross section; a retainer comprising a receiving recess including an opening corresponding to the non-circular cross section so as to detachably receive the rotary shaft; and an index unit indicating a position where the wiper blade is coupled to or separated from the retainer while the wiper blade is rotated with respect to the retainer within a predetermined angle range; wherein the index unit comprises: a cantilever-shaped protrusion disposed in front of the rotary shaft of the wiper blade, and protruding from an inner wall of the penetration hole; and a sensor disposed on a front end portion of the retainer and contacting the cantilever-shaped protrusion while the wiper blade is rotated with respect to the retainer so that a user recognizes the position where the wiper blade and the retainer are coupled to or separated from each other.