Adjustable-speed noise reduction electric drill

Abstract

The invention discloses an adjustable-speed noise reduction electric drill, which comprises an electric drill body. An electric drill bit seat is arranged at the head of the electric drill body, and an electric drill bit is arranged on the electric drill bit seat. The adjustable-speed noise reduction electric drill is characterized in that the electric drill bit seat is connected with a rotating motor through a rotating shaft, the rotating motor is arranged inside the electric drill body and connected with a resistance-type rotary speed controller, the resistance-type rotary speed controller is connected with a control switch arranged on a handle of the electric drill body, a silencer connected with the rotating motor and the resistance-type rotary speed controller is further arranged inside the electric drill body, a cooling device connected with the rotating motor is further arranged at the tail of the electric drill body, and a protective cover is arranged outside the cooling device. The adjustable-speed noise reduction electric drill has the advantages that the drilling speed of the electric drill can be adjusted by the resistance-type rotary speed controller, engineering quality is improved, noise in high-speed rotation of the electric drill is reduced by the silencer, and a quieter working environment is created for people.

Description

technical field [0001] The invention relates to electric tools, in particular to a speed-adjustable sound-absorbing electric drill. Background technique [0002] In the past work, there was only one speed of the electric drill. When the electric drill drilled to the end, it was often necessary to drill the hole carefully. Otherwise, the depth of the drill hole would not match the original one, which would affect the quality of the project. Moreover, the electric drill In the case of high-speed operation, the noise is relatively large. In the hot summer, the irritating sound is likely to affect the operator's emotions. Moreover, the temperature of the motor and the drill bit is likely to rise when the electric drill rotates at high speed. In severe cases, sparks will appear. Jumping into the eyes of the operator will have serious consequences. The general motor cannot work at night, and it will also bring unnecessary trouble to the operator. [0003] Therefore, there is an u...

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Problems solved by technology

[0002] In the past work, there was only one speed of the electric drill. When the electric drill drilled to the end, it was often necessary to drill the hole carefully. Otherwise, the depth of the drill hole would not match the original one, which would affect the quality of the project. Moreover, the electric drill In the case of high-speed operation, the noise is relatively large. In the hot summer, the irritating sound is likely to affect the operator's emotions. Moreover, the temperature of the motor and the drill bit is likely to rise when the electric drill rotates at high speed. In severe cases, sparks will appear. Jumping into the eyes of the operator will have serious consequences. The general motor cannot work at night, and it will also bring unnecessary trouble to the operator.

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