Patent attributes
The water pump comprises: a body, a rotating device, a driving device, an upper cover and a bottom cover. A lower contacting element is mounted below a bearing, and is capable of contacting a bottom end of a shaft. The upper cover has an upper contacting element being capable of contacting a top end of the shaft. When the rotating device rotates, the top end of the shaft touches the upper contacting element in one-point way to avoid the problem of rubbing the blades of the rotating device and the upper cover. Besides, the shaft, the bearing, the upper contacting element and the lower contacting element are made of a waterproof and rustproof material with well wear character to absorb the water or the cooling liquid which can be a lubrication to reduce the wear to extend the life of the above elements.
