Title:
ELECTRIC TOOL
Document Type and Number:
WIPO Patent Application WO/2024/045441
Kind Code:
A1
Abstract:
An electric tool, comprising: a housing (1), wherein the housing (1) is provided with an air inlet (11) and a heat dissipation port (13); an electric motor (2), which comprises a front end and a rear end; a heat dissipation fan (21), which is mounted at the rear end of the electric motor (2) and is driven by the electric motor (2) to rotate so as to generate a negative pressure, an accommodating space being internally provided with an electric-motor heat dissipation channel, in which an airflow flows from the air inlet (11) to the heat dissipation port (13); and a control board (3), which is arranged in the accommodating space and located behind the electric motor (2), and is configured to control the operation of the electric motor (2), wherein the housing (1) is provided with a partition plate (15) having an inner wall extending into the accommodating space; the partition plate (15) is located between the electric motor (2) and the control board (3), so that the control board (3) is separate from the electric-motor heat dissipation channel; the partition plate (15) divides the heat dissipation port (13) into a first heat dissipation port (131) close to the electric motor (2), and a second heat dissipation port (133) close to the control board (3); the partition plate (15) is provided with a ventilation hole (151) facing the heat dissipation fan (21); the second heat dissipation port (133), the ventilation hole (151) and the first heat dissipation port (131) form a control-board heat dissipation channel; and the control board (3) is located in the control-board heat dissipation channel.
Inventors:
ZHU YUNJIA (CN)
Application Number:
PCT/CN2022/141961
Publication Date:
March 07, 2024
Filing Date:
December 26, 2022
Export Citation:
Assignee:
JIANGSU DONGCHENG TOOLS TECH CO LTD (CN)
International Classes:
A01D34/416; A01D34/78; A01D34/81; A01D34/82; H02K9/06
Foreign References:
| CN115336460A | 2022-11-15 | |||
| CN216292179U | 2022-04-15 | |||
| CN212012397U | 2020-11-24 | |||
| CN110651588A | 2020-01-07 | |||
| CN111953092A | 2020-11-17 | |||
| CN211671440U | 2020-10-16 | |||
| US20080315693A1 | 2008-12-25 | |||
| US20130313925A1 | 2013-11-28 |
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