Mounting structure for water blocking cap in wiper device, method for mounting water blocking cap, and wiper device

A method for mounting a water blocking cap to a shaft holder that is configured to pivotally support a pivot shaft of a wiper arm, wherein

• the shaft holder includes
• a tubular stem configured such that the pivot shaft is inserted through the stem, and
• a fixed portion configured to extend from the stem and outward in a radial direction of the stem and to be fixed to a vehicle body,
• the water blocking cap includes
• a mounting portion configured to be mounted to the stem, and
• a water receiver that is connected to the mounting portion and constitutes a flow path configured to drain water in a predetermined direction,
• the water blocking cap mounting method comprising:
• when mounting the mounting portion to the stem, moving the water blocking cap in a direction intersecting with an axial direction of the stem, while moving the cap from a distal side toward a proximal side of the stem;
• and
• in a mounted state in which the mounting portion is mounted to the stem, arranging a part of the water receiver in a position that is closer to the proximal side than the fixed portion and in which the part overlaps with the fixed portion as viewed from the axial direction of the stem.

A wiper device comprising:

• a shaft holder that pivotally supports a pivot shaft of a wiper arm;
• and
• a water blocking cap mounted to the shaft holder, wherein
• the shaft holder includes
• a tubular stem through which the pivot shaft is inserted, and
• a fixed portion that extends from the stem and outward in a radial direction of the stem and is fixed to a vehicle body,
• the water blocking cap includes
• a mounting portion mounted to the stem, and
• a water receiver that is connected to the mounting portion and constitutes a flow path configured to drain water in a predetermined direction,
• one of the shaft holder and the water blocking cap includes a guide portion, wherein, when the water blocking cap is mounted to the stem by moving the water blocking cap from a distal side toward a proximal side of the stem, the guide portion contacts a part of the other one of the shaft holder and the water blocking cap, thereby moving the water blocking cap in a direction intersecting with an axial direction of the stem, and
• in a mounted state in which the mounting portion is mounted to the stem, a part of the water receiver is arranged in a position that is closer to the proximal side of the stem than the fixed portion and in which the part overlaps with the fixed portion as viewed from the axial direction of the stem.