Motor protecting device based on electromagnetic attraction and turbid liquid limiting

Abstract

The invention provides a motor protecting device based on electromagnetic attraction and turbid liquid limiting, and relates to the technical field of motors. The device comprises a shell. The left side of the shell is movably connected with a gear. The right side of the gear is engaged with a sliding barrel. The inner wall of the left side of the sliding barrel is fixedly connected with two symmetrical positive plates. The inner wall of the right side of the sliding barrel is fixedly connected with two symmetrical negative plates. According to the motor protecting device based on electromagnetic attraction and turbid liquid limiting, a dielectric plate is used with the positive plates and the negative plates cooperatively, when glass rises and falls to a limit state, the sliding barrel slides to the top or the bottom, and at the moment, an electromagnet which is in the same direction of the sliding barrel generates magnetism, a movable block is moved towards the electromagnet by attracting a magnetic block, after the movable block moves to the same direction, the opposite area of the positive plates and the negative plates is decreased to the minimum by the dielectric plate, at this moment, the circuit voltage is smaller than the minimum circuit voltage of a resistor, a circuit is in an open state, a motor is effectively protected, and overwork of the motor is avoided.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a motor protection device based on electromagnetic attraction and suspension liquid limit. Background technique [0002] The motor refers to an electromagnetic device that realizes the conversion or transmission of electric energy according to the law of electromagnetic induction. Its main function is to generate driving torque as a power source for electrical appliances or various machines, effectively reducing labor force, and can also greatly improve Productivity is widely used in daily life. [0003] For example, there is a motor in the current automobile, and the glass of the car window is mostly driven by a motor, which makes the process of lifting the glass more convenient. However, when the current glass lifting motor is in use, it often encounters super In the case of load work, this is because when the glass is lifted to the limit position, the glass cannot continue to ...

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Problems solved by technology

[0003] For example, there is a motor in the current automobile, and the glass of the car window is mostly driven by a motor, which makes the process of lifting the glass more convenient. However, when the current glass lifting motor is in use, it often encounters super In the case of load work, this is because when the glass is lifted to the limit position, the glass cannot continue to move, but the motor is still in the energized state, but the motor cannot rotate, which causes the internal heat of the motor to rise, which leads to the overload of the motor. After time use, the motor will wear seriously, which greatly reduces the service life of the motor

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