| 摘要 |
An inflator having an enhanced cooling effect on its motor is disclosed, which includes a box composed a cover and a base, and a compressor unit installed in the box. The box is provided with airflow-guiding members cooperated with a cooling fan fitted at a rotating shaft of a motor used in the compressor unit to allow outside air to be quickly drawn into the interior of the box. Thereafter, the airflow can be guided by the airflow-guiding members to enter the interior of the motor to dissipate the heat generated by the rotor assembly in the motor and finally go out of the box. Therefore, heat is not easy to accumulate in the motor, so that maximum power output of the motor can be achieved, and the performance and service life of the motor can be increased. |
| 主权项 |
1. In an inflator including a box composed of a cover and a base, and a compressor unit installed in the box, wherein the cover has a front wall and a rear wall, and the base has a front wall aligned with the front wall of the cover, and rear wall aligned with the rear wall of the cover, the front walls of the cover and the base defining multiple first slits to serve as an air entrance port, the rear walls of the cover and the base defining multiple second slits to serve as an air exit port, the compressor unit including a motor having a rotating shaft, one end of which is provided with a cooling fan for drawing outside air into the interior of the box via the first slits, the motor defining two opposite openings on its housing; wherein the improvements comprises:
the cover is provided with an upper airflow-guiding member, and the base is provided with a lower airflow-guiding member, the upper and lower air flow-guiding members respectively contacting the housing of the motor at a location slightly behind the two opposite openings for supporting the motor's housing and guiding the airflow induced by the cooling fan to enter the motor's housing via the two opposite openings, so that heat is not easy to accumulate in the motor. |
