Motor underwater starting switch and dust collector employing motor underwater starting switch

Abstract

The invention discloses a motor underwater starting switch, comprising a circuit board provided with a drive circuit, a microcontroller, a pull-down resistor and a filter capacitor. The signal input terminal of the drive circuit is electrically connected with the microcontroller, and the microcontroller is electrically connected with a first conductor, the first conductor is electrically connected to one end of the pull-down resistor, the pull-down resistor is electrically connected to the filter capacitor, and the filter capacitor is electrically connected to the first conductor; the first conductor and a second conductor are arranged at an interval, the second conductor is electrically connected to the positive pole of a power supply, and two pins of a motor are electrically connected to the positive pole of the power supply and the signal output terminal of the drive circuit. In addition, the invention also provides an underwater dust collector which employs the motor underwater starting switch, the underwater dust collector comprises a casing, a circuit board and a power supply, a motor with a waterproof shell is arranged in the casing, a motor driven output shaft is connected with a water wheel and is sheathed with a sealing element, and a first conductor and a second conductor are provided at the rear of the sealing element. The invention has the advantages that the underwater starting and out-of-water stopping of the motor can be achieved, so that the sealing element on the motor output shaft is protected.

Description

technical field [0001] The invention relates to an underwater switch and its application products, in particular to a switch for a motor and a vacuum cleaner using the technology, specifically a switch for starting a motor entering water and a vacuum cleaner using a switch for starting a switch for entering water with a motor. Background technique [0002] In the prior art, some underwater devices are suitable to be opened underwater and closed when leaving the water surface, so manual switches are not suitable, such as underwater vacuum cleaners. [0003] There are two types of underwater cleaning equipment. One is that the motor is installed on the shore, and only the cleaning head goes deep into the water. The host of this cleaning equipment does not directly contact the water, and the requirements for liquid sealing protection are not high; the other is the underwater cleaning equipment. Cleaning equipment is a full-equipment immersion vacuum cleaner. Its motor usually h...

AI Technical Summary

Problems solved by technology

[0004] However, there is a problem in the prior art that has not been solved, that is: the seal set on the output shaft is easily damaged and loses good sealing effect

However, if the underwater vacuum cleaner starts before entering the water, the heat generated by the friction between the output shaft and the seal is difficult to dissipate through the air

[0006] In addition, if the underwater vacuum cleaner is started before it enters the water, it will also cause splashes and noises when the water wheel beats the water surface when it is immersed in the water; the air in the water inlet chamber in front of the water wheel is also hindered. Larger than water, the water wheel needs time to exhaust the air in the water chamber to create enough negative pressure to suck in the water

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