Negative pressure type dust suction electric drill

Abstract

The invention discloses a negative pressure type dust suction electric drill. The negative pressure type dust suction electric drill comprises an electric drill body, a negative pressure cover and a negative pressure generating device, wherein the electric drill body comprises a drill rod, a sleeve and a driving device; the drill rod and the sleeve form a transverse shaft part perpendicular to a working surface, and the driving device is arranged below the transverse shaft part and is positioned at the position close to the working surface to form a longitudinal shaft part; the drill rod is provided with an axial hollow channel, an inlet of the hollow channel penetrates through the electric drill body in the sleeve and communicates external air, and an outlet of the hollow channel is located at a drill bit of the drill rod; and the negative pressure cover is arranged on the electric drill body, and used for enclosing the drilling working surface during drilling, the negative pressure generating device enables the negative pressure cover to generate negative pressure on the drilling working surface during the drilling, so that the negative pressure cover can adsorb the drilling working surface, the external air passes through the electric drill body, the hollow channel of the drill rod and the drill bit in sequence, and then enters an exhaust channel to be discharged to form convection so as to discharge dust. The negative pressure type dust suction electric drill solves the problems that an existing electric drill is poor in drilling precision, difficult to control, large in the dust, high in labor intensity and the like.

Description

Technical field [0001] The invention relates to the technical field of electric drills, in particular to a negative pressure dust-absorbing electric drill. Background technique [0002] Electric drill is one of the most commonly used tools. After decades of continuous improvement, although there are many changes, there are still many problems: [0003] 1. The center of gravity of the electric drill is very high. Due to the high center of gravity, its control is relatively difficult and it is difficult to accurately align the drilled position. [0004] 2. There is basically no dust absorption protection for electric drills, especially when the wall is hit, the dust is very large. For example, the Chinese invention patent application with the publication number CN106312129A and the Chinese invention patent with the authorized announcement number CN2582795Y disclose electric drills with dust collection function, but the practical value is not great and the practical feasibility is low....

AI Technical Summary

Problems solved by technology

[0003] 1. The center of gravity of the electric drill is very high. Due to the high center of gravity, its control is relatively difficult, and it is difficult to accurately align the drilled position.

[0004] 2. The electric drill basically has no dust protection, especially when hitting the wall, the dust is very large

For example, the Chinese invention patent application whose publication number is CN106312129A and the Chinese invention patent whose authorization announcement number is CN2582795Y disclose an electric drill with a dust-absorbing function, but the practical value is not large, and the actual feasibility is low

[0005] 3. When adding force to the drill bit, it is basically controlled by hand. It is difficult to control the force, especially when hitting wall bricks, it is easy to crack or knock off the wall bricks. Broken etc.

[0006] 4. The labor intensity of drilling operation is high, especially when drilling high-altitude walls or roofs, the labor intensity is particularly high

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