Patent ID: 8745811

Claim:
A connection member that is swingably fitted into an opening that is formed at a blade main body of a wiper blade so as to connect the blade main body to a wiper arm, the connection member comprising: right and left side walls; a shaft support portion that is swingably fitted onto a support shaft that is provided at the blade main body; upper and lower pieces that are formed so as to be continuous from the shaft support portion; and projections that come into sliding contact with inner side surfaces at the opening are formed on outer side surfaces of the right and left side walls, wherein: the shaft support portion and the upper piece are integrally formed so as to bridge the right and left side walls, the lower piece is formed so as to be separated from the right and left side walls by a notched groove provided on both ends of the lower piece adjacent to the right and left side walls, the projections include: upper projections that extend vertically both upward and downward with respect to the upper piece, and lower projections that extend vertically both upward and downward with respect to the notched grooves of the lower piece, the lower projections project outwardly in both right and left directions horizontally in line with the notched grooves, and outward projection amounts of the lower projections are larger than outward projection amounts of the upper projections and at least the lower projections are formed with a continuous inclined surface whose projection amount is larger downwards so that when lower portions of the right and left side walls deform further inward with respect to upper portions of the right and left side walls, sliding with the inner side surfaces of the blade main body is secured.