Water discharge device

A water discharge device that discharges water while reciprocally vibrating the water, the water discharge device comprising:

• a water discharge device body;
• and
• a vibration generating element that is provided in the water discharge device body and discharges water while reciprocally vibrating the water in a predetermined vibration plane, wherein
• the vibration generating element includes
• a water supply path into which supplied water flows,
• a collision portion that is disposed at a downstream end portion of the water supply path to block part of a flow passage section of the water supply path and generates vortices in mutually opposite directions downstream of the collision portion when the water guided through the water supply path collides with the collision portion,
• a vortex street path that is provided downstream of the water supply path to guide vortices formed by the collision portion, and
• a discharge path through which the water guided through the vortex street path is discharged,
• the vortex street path is formed by fitting, to each other, an upstream fitting portion of an upstream member at which an upstream side of the vortex street path is formed and a downstream fitting portion of a downstream member at which a downstream side of the vortex street path is formed,
• one of the upstream fitting portion and the downstream fitting portion is formed of a material having a first elastic modulus, and the other is formed of a material having a second elastic modulus larger than the first elastic modulus,
• the upstream member or the downstream member is provided with a vibration reducing portion that reduces vibration of the upstream member due to vortices generated in the vortex street path, and
• the fitting portion formed of the material having the first elastic modulus among the upstream fitting portion and the downstream fitting portion is elastically deformed by a predetermined amount due to a provision of the vibration reducing portion when the upstream fitting portion and the downstream fitting portion are fitted to each other.