Electric drill with cooling system

Abstract

The invention provides an electric drill with a cooling system, which comprises a handle, an engine body and a drill chuck, wherein the handle is provided with a battery and a switch; the engine body comprises a shell, a motor arranged in the shell, and an impeller arranged on a rotating shaft of the motor; the shell is provided with a plurality of air outlet holes corresponding to the impeller; the impeller can rotate along the rotating shaft of the motor to generate airflow used for cooling the motor; the shell of the battery is provided with a plurality of through holes; an airflow passage is formed in the handle and the engine body, and is communicated with the external through the through holes of the battery; a radiator is positioned in the airflow passage and closely attached to the switch; and a part of the cooling airflow passes through the airflow passage before reaching the motor, so that the airflow can cool the battery and the switch. In the electric drill, the part of the cooling airflow can firstly cool the battery and the switch before cooling the motor, so the service life of the battery and the switch can be prevented from being influenced due to overheating.

Description

technical field [0001] The invention relates to an electric tool, in particular to an electric drill with a cooling system. Background technique [0002] In the prior art, the electric drill technology has become increasingly mature. As shown in FIG. 4A and FIG. 4B , the electric drill in the prior art generally includes a handle 1 , a body 2 and a drill chuck 3 . A battery 4 is installed at one end of the handle 1, and a switch 5 is installed inside. The body 2 is equipped with: a motor 6 and an impeller 7 fixed on the rotating shaft of the motor 6. The impeller 7 can rotate with the motor 6 to generate airflow for cooling the motor 6. The airflow is passed through the air inlet of the body 2. 8 enters and discharges from air outlet 9. [0003] However, during the continuous use of the electric drill, the battery 4 and the switch 5 of the electric drill will generate heat, and the longer the use time, the more heat will be generated. If the accumulated heat is not dischar...

AI Technical Summary

Problems solved by technology

[0003] However, during the continuous use of the electric drill, the battery 4 and the switch 5 of the electric drill will generate heat, and the longer the use time, the more heat will be generated. If the accumulated heat is not discharged in time, the battery 4 and switch 5 will be seriously affected. 5 service life

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