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electrical tools

A tool and motor shaft technology, applied in the field of electric tools, can solve the problems of large size of sanding machine, bulky machine, unfavorable use and portability, etc.

Active Publication Date: 2020-12-01
NANJING CHERVON IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing sanding machines are usually provided with a high-power motor with a larger size because of the need for larger output power, which will inevitably cause the entire sanding machine to be larger in size and heavier. Not conducive to the user's use and portability
Furthermore, the shell structure of the existing sanding machine cannot make the sanding machine achieve the most efficient heat dissipation effect; moreover, a fan for heat dissipation is usually installed inside the motor, which will cause problems such as dust or water vapor entering the inside of the motor , which may damage the motor or even be dangerous to the user

Method used

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Embodiment Construction

[0041] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0042] The present invention proposes a new type of electric tool. As an embodiment, the electric tool can be a sander. The sander is small, portable, easy to carry, and has a good heat dissipation effect. Figure 1 to Figure 3 It is a schematic diagram of the overall structure of an electric tool in different orientations according to an embodiment of the present invention.

[0043] Figure 4 for figure 1 The inner view of the power tool in , with the tool housing removed; Figure 5 for Figure 4 Schematic cross-section of the motor in . Please also refer to Figure 1 to Figure 5 , The sander 100 at least includes: a tool housing 10 , a motor 20 and a bottom plate 30 , of course, in order to realize the transmission from the motor 20 to the bottom plate 30 , a transmission assembly 40 is also provided between the motor 20 and the bo...

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Abstract

The invention discloses an electric tool, which includes a motor, a tool housing and a fan; the motor includes a motor shaft that can rotate about the motor axis, the tool housing contains the motor, and the fan can generate heat in the tool housing when it rotatesThe motor further includes: a motor housing and a stator arranged in the motor housing; the motor housing includes: side walls, a top wall and a bottom wall, the side walls can at least partially surround the motor shaft, and the top wall is located along the side wallsOne end parallel to the motor axis direction of the motor shaft, the bottom wall is located at the other end of the side wall along the motor axis direction parallel to the motor shaft; wherein, the top wall is also formed with at least two guide ribs, which can be guided in a diffuse mannerThe heat dissipation airflow generated in the tool housing when the fan rotates.The electric tool of the invention has better heat dissipation effect.

Description

technical field [0001] The invention relates to an electric tool. Background technique [0002] Electric tools generally include: a motor, a tool housing and functional parts that can be driven by the motor. However, the heat dissipation effect in the existing electric tools is poor, and long-term use may cause damage to the motor and other components in the tool housing. [0003] As a commonly used power tool for grinding and polishing, the sander is more and more popular. Structurally, the sander mainly includes: a housing, a motor, a transmission device and a bottom plate, wherein the transmission device drives the bottom plate to rotate or swing. According to the shape of the bottom plate, sanding machines generally include flat sanding machines, circular sanding machines and triangular sanding machines. [0004] However, the existing sanding machines are usually provided with a high-power motor with a larger size because of the need for larger output power, which wil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B23/02B24B55/00
CPCB24B23/02B24B55/00B25F5/008B24B23/03
Inventor 陈仕波徐谦陈武
Owner NANJING CHERVON IND