Handpiece having direct cooling type slimmed driving part

Abstract

The handpiece includes; an outer housing of a bar shape; a cylindrical core inserted into the outer housing and having an air hole and a water hole; pipes respective inserted into the air hole and the water hole of the core; a rotor made with a cylindrical magnetic material and inserted into the core; cylindrical support rings forcedly fit to both sides of transfer shafts of the rotor; a pair of bearings respectively disposed at the front side and the rear side of the support rings; a coupling disposed in front of the rotor; a front housing joined to the front of the outer housing; a front cap disposed at the rear of the core; a rear cap disposed at the rear of the front cap and having a power supply terminal disposed at one side thereof; and a rear housing joined to the rear of the outer housing.

Description

technical field [0001] The present invention relates to a handpiece with a direct-cooling light-duty driving part, and more particularly relates to a through hole formed through the engine stator by combining water and air pipes for inflowing water and air in order to cool the heat generated by the engine when the engine is running inside the handpiece , thus, the heat generated from the engine can be effectively cooled, and by combining the pipes with the through holes of the stator, the handpiece with the direct cooling type lightweight drive section can be reduced in size and light in weight . Background technique [0002] Generally, handpieces are used in dental crafts such as cutting or grinding teeth in dentistry, nail art used in manicures at nail salons, fine work such as processing gemstones, etc., and are mainly used in fields that require precision machining. [0003] At this time, the handpiece is provided with a high-speed engine that supplies power and runs at...

AI Technical Summary

Problems solved by technology

[0005] However, in the conventional method of using salt water as described above, the pipes for supplying salt water are formed outside the stator, and the pipes formed outside indirectly cool the heat generated from the high-speed engine, so the cooling effect on the heat of the high-speed engine is very small. , there is also the disadvantage of continuously injecting brine, and the structure of the electrical method is complicated, and the cooling effect on the heat generated from the high-speed engine is also reduced

[0006] Moreover, the existing way of using air can only cool the space around the rotating impeller due to the unsmooth flow of the air, but cannot cool the interior of the handpiece and the high-speed engine as a whole

[0007] Therefore, in the past, the heat generated when the high-speed engine of the handpiece was running could not be effectively cooled, and there was a problem of vibration and noise when the high-speed engine of the handpiece was running.

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