Vacuum cleaner having brush motor using deceleration rate

Abstract

A vacuum cleaner includes: a main body; a suction brush configured to draw particulates into the main body; a motor installed at the main body; and a decelerating unit configured to connect a driving shaft of the motor with an impeller to transfer a rotation force of the driving shaft to the impeller and to set the rotation speed of the driving shaft lower than that of the impeller.

Description

CROSS-REFERENCE TO RELATED APPLICATION [0001] This application claims the benefit of priority under 35 U.S.C. § 119 to Korean Patent Application No. 2005-84139, filed on Sep. 09, 2005, the entire contents of which are incorporated herein by reference. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to a vacuum cleaner with a brush motor. More particularly, the invention relates to a vacuum cleaner with a brush motor using a deceleration rate, which can produce improved suction force by stabilizing the motor by setting the rotation speed of the impeller higher than that of the motor and rotating an impeller at a high speed. [0004] 2. Description of the Related Art [0005] In general, a vacuum cleaner uses a brush motor to generate suction force. Referring to FIG. 1, the brush motor 1 generates rotation force in an armature 4 and rotates an impeller 5 connected to a driving shaft 3 to suck dirt and air when electrical power is applied t...

AI Technical Summary

Benefits of technology

"The present invention provides a vacuum cleaner with a brush motor that uses a deceleration rate to improve suction force. This is achieved by rotating the impeller at a high speed and stabilizing the motor by setting the rotation speed of the impeller higher than that of the motor. The invention also provides a deceleration unit that connects the driving shaft of the motor with the impeller to transfer the rotation force. The invention is cost-effective as it employs a low-priced brush motor that uses a deceleration rate."

Problems solved by technology

However, this causes the rotation speed of the motor to increase.

This can cause an increase in the number of sparks generated between a commutator 2 and a carbon brush 8, and may eventually damage the motor.

Generally, the reduced life span of the motor leads to a shorter life span of the vacuum cleaner.

However, the BLDC motor or the single-phase SR motor is not used widely for vacuum cleaners due to its high price.

The high price of the motor in turn leads to a high price of the vacuum cleaner, and the high price of the vacuum cleaner lowers its price competitiveness.

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