Floor pump has inner cylinder assembly, which has inner cylinder, and outer cylinder, where cross-sectional surface of end of outer cylinder is greater than another end of outer cylinder

摘要

The floor pump has an inner cylinder assembly (10), which has an inner cylinder, and an outer cylinder (20). The cross-sectional surface of the end of the outer cylinder is greater than another end of the outer cylinder. The inner cylinder is arranged in the outer cylinder. A rod assembly (30) is arranged partially in the inner cylinder assembly, and a hose (40) stays in fluidic connection with the inner cylinder between the rod assembly and a base element.