Electric cutting tool

Abstract

The invention provides an electric cutting tool. The electric cutting tool comprises a working assembly and a controlling assembly used for controlling the working assembly; the working assembly comprises a shell body, a driving unit and a power supply unit; a cooling structure is formed inside the shell body and is used for cooling the driving unit and the power supply unit; the cooling structurecomprises an air inlet, an air outlet, and a cooling air duct, and the air inlet is arranged on a first shell body, the air outlet is arranged on a second shell body, and the cooling air duct connects the air inlet and the air outlet; the driving unit comprises a fan which protrudes into the cooling air duct; and the fan drives cooling air outside the controlling assembly to flow through the airinlet, along the cooling air duct, into the power supply unit and the driving unit and flow out of the air outlet. Through the arrangement of the controlling assembly which is provided with the cooling structure, the provided electric cutting tool realizes effective cooling of the driving unit and the power supply unit which are contained in the shell body; the working efficiency of the electric cutting tool using the controlling assembly is improved; the service life is extended; and at the same time, a tight structure, smaller occupied space and convenient operation are guaranteed.

Description

technical field [0001] The invention relates to an electric cutting tool. Background technique [0002] An electric cutting tool is a portable cutting tool that cuts materials such as stone, concrete or wood using a cutting disc that is rotatably mounted on a stand. [0003] In fact, in order to facilitate the operation and use of high-power hand-held electric cutting tools, it is necessary to achieve small size and have a good cooling effect at the same time, so as to further ensure the use effect of high-power hand-held electric cutting tools. [0004] Although the existing high-power hand-held electric cutting tools have a corresponding cooling structure, the conventional cooling structure usually only cools the drive motor. In the prior art, water cooling is used to spray the cutter blade while cooling the The internal motor is cooled, but because the water-cooling structure needs to provide complex water-cooling pipelines, on the one hand, the cooling pipeline cannot b...

AI Technical Summary

Problems solved by technology

[0004] Although the existing high-power hand-held electric cutting tools have a corresponding cooling structure, the conventional cooling structure usually only cools the drive motor. In the prior art, water cooling is used to spray the cutter blade while cooling the The internal motor is cooled, but because the water-cooling structure needs to provide complex water-cooling pipelines, on the one hand, the cooling pipeline cannot be accurately laid to various positions of the electric cutting tool, resulting in limited cooling effect; on the other hand, the laying of the cooling pipeline will lead to The increase in volume of electric cutting tools is not conducive to the miniaturization of electric cutting tools, resulting in limited popularization of electric cutting tools in the prior art

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