Patent ID: 7523521

Claim:
A wiper assembly, comprising: an elongated fixing frame having pivoting parts at both ends thereof; a wiper motor attached to an approximate center of the fixing frame; a wiper motor shaft; a motor-driven arm coupled to the wiper motor shaft; a pair of wiper arm shafts rotatably inserted into the pivoting parts, the wiper arm shafts having a thread around the outer circumference thereof; a pair of wiper driving arms integrally jointed to the wiper arm shafts; and two connecting rods interconnecting the wiper driving arms and the motor-driven arm, wherein the wiper driving arms are disposed at upper ends of the pivoting parts, so that the wiper driving arms are positioned at the same height level with an upper end of the motor shaft; and a cap covering the wiper driving arms and the wiper arm shaft, wherein the cap comprises: a cylindrical hole, inside which a thread is formed so as to engage with the thread of the wiper arm shafts; and a channel integrally formed along the contour thereof, which is adapted for discharging water there through, thereby effectively preventing water from entering into the pivoting parts of the elongated fixing frame.