Title:
ELECTRIC TOOL
Document Type and Number:
WIPO Patent Application WO/2024/067794
Kind Code:
A1
Abstract:
Disclosed in the present invention is an electric tool. The electric tool comprises: a housing, which extends in a longitudinal direction; and a fan, an electric motor and a circuit board, which are accommodated inside the housing, wherein the housing is provided with an air outlet, a first air inlet and a second air inlet, the first air inlet being adjacent to the electric motor, the second air inlet being adjacent to the circuit board, and the first air inlet being located between the air outlet and the second air inlet. The electric tool comprises a first heat dissipation air path, passing through the electric motor, and a second heat dissipation air path, passing through the circuit board, which are formed by means of rotation of the fan. In the electric tool of the present invention, the electric motor and the circuit board are respectively cooled, such that the cooling efficiency is improved, and mutual interference of temperature rise therebetween is reduced; the first air inlet adjacent to the electric motor is located between the second air inlet adjacent to the circuit board and the air outlet used for discharging airflow to the outside, such that the circuit board is prevented from being affected by the temperature rise of airflow flowing through the electric motor, thus the circuit board is further protected; and the path of the first heat dissipation air path is relatively short, thereby strengthening the heat dissipation effect on the electric motor.
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Inventors:
LIU AIGUO (CN)
ZHANG YUHAO (CN)
ZHANG YUHAO (CN)
Application Number:
PCT/CN2023/122514
Publication Date:
April 04, 2024
Filing Date:
September 28, 2023
Export Citation:
Assignee:
JIANGSU DONGCHENG TOOLS TECH CO LTD (CN)
International Classes:
B24B23/02; B25F5/00; H02K5/20
Foreign References:
| JP2016144856A | 2016-08-12 | |||
| CN206811886U | 2017-12-29 | |||
| CN215392873U | 2022-01-04 | |||
| CN115635399A | 2023-01-24 | |||
| JP2021030395A | 2021-03-01 |
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