| 摘要 |
A portable electric inflator includes an electric air compressor, a pressure gauge, and a box for accommodating the electric air compressor and the pressure gauge. The box defines therein a generally L-shaped space for accommodating a cooling fan, a motor, a main frame with a transmission mechanism, a cylinder with a piston body, and an air storage tank of the electric air compressor. The motor defines two openings at its surrounding wall and multiple downstream through holes at its bottom wall. The main frame is provided with a peripheral wall and beveled radial braces and defines two through holes to facilitate the airflow passing through the main frame. The cooling fan can draw outside air to enter the box and smoothly flow along the generally L-shaped space to quickly dissipate the heat generated by the electric air compressor, whereby the performance and safety of the inflator can be increased. |
| 主权项 |
1. In a portable electric inflator including an electric air compressor and a box for accommodating the electric air compressor, the electric air compressor including a main frame, a cylinder fitted with a piston body and provided at the main frame, a motor fitted with a cooling fan at its output axle and mounted to the main frame, the motor rotating the cooling fan and driving a transmission mechanism to have the piston body conduct reciprocating motion in the cylinder, so that compressed air is produced in the cylinder and transferred to an air storage container; wherein the improvement comprising:
the box defines therein a generally L-shaped space for accommodating the cooling fan, the motor, the main frame together with the transmission mechanism, the cylinder with the piston body, and the air storage container of the electric air compressor; an air entrance port is defined at the box, near a front portion of the generally L-shaped space, and an air exit port is defined at the box, near a rear portion of the generally L-shaped space; wherein outside air is drawn by the cooling fan to flow through the air entrance port to enter the box and flow along the generally L-shaped space and finally discharge into the environment via the air exit port, thus dissipating the heat generated by the electric air compressor, whereby the size of the inflator can be reduced, and the performance and safety of the inflator can be increased. |
