Unlock instant, AI-driven research and patent intelligence for your innovation.

Power tools

A technology of electric tools and tools, which is applied in the direction of manufacturing tools, portable motorized devices, metal processing equipment, etc., and can solve problems such as difficulty in sufficient cooling

Active Publication Date: 2005-07-13
MAKITA CORP
View PDF1 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] If the above cooling technology is used, although a certain degree of cooling effect can be obtained, it is difficult to sufficiently cool, and there is still room for improvement.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Power tools
  • Power tools
  • Power tools

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment

[0019] Below, refer to Figure 1 ~ Figure 3 , the first embodiment of the present invention will be described in detail. In this embodiment, a portable electric disc grinder used for grinding or grinding of various workpieces such as metal, concrete, and stone will be described as an example of an electric tool. exist figure 1 In , the overall structure of the electric disc grinder 101 is shown in longitudinal section. In addition, in figure 2 In FIG. 2 , the overall structure of the electric disc grinder 101 is shown in a partial sectional view with the rear side cut away. image 3 It is a partially enlarged view showing the second channel for introducing outside air.

[0020] As shown in the figure, the electric disc grinder 101 has the longitudinal direction as the front-rear direction (the left-right direction in the drawing), and has an outer shell formed by a main body 103 composed of a motor case 105 and a gear box 107 . The above-mentioned main body portion 103 c...

no. 2 Embodiment

[0033] Below, refer to Figure 4 and Figure 5 , a portable electric disc grinder 101 according to a second embodiment of the present invention will be described. The second embodiment is a modified example of the settings of the second channels 231 and 233 of the first embodiment described above. Except for this point, the configuration is the same as that of the first embodiment, and the same reference numerals are attached, and the description thereof is omitted.

[0034] In the second embodiment, the second passages 241 and 243 are provided on the upper side and the lower side of the main body 103 respectively on the discharge side (downstream side) of the cooling fan 217 . The second passages 241 and 243 correspond to the "second cooling air circulation path" of the present invention.

[0035] The second passages 241 , 243 are composed of external air inlets 241 a , 243 a formed on the outside of the wind deflector 221 and communication passages 241 b , 243 b formed on ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides a cooling technique that is very effective in improving the cooling effect of electric tools. The present invention provides an electric tool, comprising a driving motor (201); a working tool (313) for performing a predetermined processing operation on a material to be processed; a power transmission part (301) for transmitting the output of the driving motor to the working tool; The tool body (103) of the motor and the power transmission part; the cooling fan (217) arranged in the tool body; the tool body has: the first cooling air circulation path (299) through which the cooling fan circulates the cooling air in the tool body A second cooling air flow path (231, 233) that introduces outside air through the flow of cooling air in the first cooling air flow path and mixes the outside air with the cooling air.

Description

technical field [0001] The invention relates to the cooling technology of electric tools. Background technique [0002] As an example of technology for cooling an electric tool, JP-A-10-201205 (Patent Document 1) discloses a technology for cooling a portable electric disc grinder. In the technique disclosed above, a cooling fan driven to rotate the motor is arranged in the motor case, and the cooling air sucked in from the rear end of the motor case is circulated forward by the rotation of the cooling fan, and then connected to the motor case. The exhaust port near the gear box is discharged to the outside, thereby forming a structure for cooling the drive motor, motor casing, power transmission part, gear box, etc. [0003] If the above-mentioned cooling technology is adopted, although a certain degree of cooling effect can be obtained, sufficient cooling is difficult, and there is still room for improvement. [0004] [Patent Document 1] Japanese Unexamined Patent Publica...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B24B23/02B25F5/00B25F5/02
CPCB24B23/028B25F5/008B25F5/02
Inventor 沼田文年砂冢亮
Owner MAKITA CORP