Electric circular saw

A technology of electric circular saws and saw blades, applied in circular saws, portable motorized circular saws, sawing equipment, etc., can solve the problems of poor heat dissipation effect of power boards, complex cooling air path design, etc., to increase the effective heat dissipation surface area, Improve heat dissipation efficiency and ensure heat dissipation effect

Active Publication Date: 2021-05-04
NANJING CHERVON IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cooling air path design of this heat dissipation method is relatively complicated, and the heat dissipation effect of the power board is poor.

Method used

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  • Electric circular saw
  • Electric circular saw
  • Electric circular saw

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] like Figure 1-Figure 3 As shown, this embodiment provides an electric circular saw, including a saw blade 1 , a fixed guard 2 , a motor 3 , a heat sink 4 , a power board 5 and a casing 6 . Specifically, the casing 6 includes a grip portion for the user to grip. The motor 3 includes an output shaft rotating around the first axis, the output shaft is connected to and drives the saw blade 1 ; The cooling element 4 is arranged on the fixed shield 2, and the casing 6 includes a first housing part 61 and a second containing part 62 arranged at both ends of the casing 6, the motor 3 is arranged in the first containing part 61, and the cooling element 4 is arranged on the Inside the second housing portion 62 . The power board 5 is disposed on the heat sink 4 for controlling the output power of the motor 3 .

[0059]In the electric circular saw provided in this embodiment, the radiator 4 is arranged on the fixed shield 2 , and the fixed shield 2 and the radiator 4 are integr...

Embodiment 2

[0072] like Figure 4-Figure 6 As shown, this embodiment provides another electric circular saw. The difference between this embodiment and Embodiment 1 is that the installation positions of the motor 3A and the radiator 4A are different. Correspondingly, the extension of the transmission belt 93A relative to the fixed guard 2A The direction, and the position of the locking assembly 10A relative to the fixed shield 2A have also been adjusted. Specifically, the fixed shield 2A is fixedly connected to the casing 6A, the motor 3A is fixedly arranged in the first accommodation portion 61A of the casing 6A, and is located behind the fixed shield 2A, and the heat sink 4A is arranged on the second side of the casing 6A. Inside the housing portion 62A, it is located on the upper side of the fixed shield 2A. The cooling air of the fan flows directly from one side of the motor 3A to the other side of the motor 3A, and the cooling air path of the fan is outside the projection of the fix...

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Abstract

The invention relates to the technical field of electric tools, and discloses an electric circular saw. The electric circular saw comprises a saw blade, a fixed shield, a motor, a heat dissipation part and a power board. The fixed shield covers the upper portion of the saw blade. The output end of the motor is connected with the saw blade to drive the saw blade to rotate. The heat dissipation part is arranged on the fixed shield; a machine shell comprises a first containing part and a second containing part which are arranged at the two ends of the machine shell; the motor is arranged in the first containing part; the heat dissipation part is arranged in the second containing part; and the power board is arranged on the heat dissipation part and used for controlling the output power of the motor. According to the electric circular saw, the heat dissipation area of the heat dissipation part is indirectly increased through the fixed shield, the fixed shield makes direct contact with outside air, and therefore the heat dissipation efficiency of the power board can be further improved, a special cooling air path does not need to be arranged for heat dissipation of the power board, and therefore the cooling air path can be simplified.

Description

technical field [0001] The invention relates to the technical field of electric tools, in particular to an electric circular saw. Background technique [0002] A circular saw is a power tool used for cutting wood or plastic panels, etc. In the existing electric circular saw, a special cooling air passage is usually provided, and a power board for controlling the output power of the motor is arranged in the cooling air passage to dissipate heat from the power board. However, the design of the cooling air path in this heat dissipation method is relatively complicated, and the heat dissipation effect of the power board is relatively poor. [0003] Therefore, need badly a kind of novel electric circular saw to solve above-mentioned technical problem. Contents of the invention [0004] The object of the present invention is to provide an electric circular saw, which can improve the heat dissipation efficiency of the power board and simplify the cooling air path compared with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27B9/00B27G19/02B23D45/16B23Q11/12B26B25/00
CPCB27B9/00B27G19/02B23D45/16B23Q11/126B26B25/002
Inventor 王洪斌
Owner NANJING CHERVON IND
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