TWM573803U - Electromagnetic brake structure - Google Patents

Abstract

The present invention relates to an electromagnetic brake structure, which comprises a power supply unit; an electromagnetic brake is electrically connected to the power supply unit by a coil end; a voltage stabilizing unit is electrically connected to the power supply unit and the electromagnetic brake; The unit is a parallel electromagnetic brake; and an oscillation control unit is electrically connected to the electromagnetic brake through a switch unit, and the oscillation control unit adjusts the output waveform frequency and the pulse width to control the clamping force and the switching period of the electromagnetic brake. The linear braking force of the electromagnetic brake is achieved.

Description

Electromagnetic brake structure

The present invention relates to an electromagnetic brake structure, in particular to an adjustment of the waveform frequency and the pulse width by adjusting the oscillation control unit to control the braking force and the switching period of the electromagnetic brake.

Brake can be roughly divided into mechanical brakes, electromagnetically actuated brakes and fluid actuated brakes according to the braking method; the brake generates a braking force to reduce the rotating speed or stop the rotating object, generally the general public The brakes that are more commonly in contact, usually the brakes on the vehicle, can also be called brakes. When the brake pedal is stepped on, if the vehicle uses a disc brake, the hydraulic pipeline will act to drive the sheet and The brake disc is clamped to cause friction, that is, the braking force, and the rotating wheel is stopped or decelerated by the braking force, and the brake is a mechanical brake.

Furthermore, in addition to the aforementioned mechanical brakes, there are also brakes that are electromagnetically driven. The electromagnetic brakes are further divided into contact type and non-contact type; if they are contact type electromagnetic brakes, the magnets are magnetized after being excited by the coils. The film is driven to drive the piece to generate or release the braking force; if it is a non-contact type electromagnetic brake, after the coil is excited, an eddy current is generated in the opposite direction to the rotating object, and the reverse braking force is used. The rotating object stops.

The Republic of China Patent Publication No. TW I557339 "Electromagnetic Brake" provides a non-excited actuated electromagnetic brake capable of eliminating abnormal sounds. The specification describes that when the electromagnetic coil is in a non-energized state, the brake spring causes the armature disc to turn the inner disc toward the end disc. When the side is pressed, this state is the braking state, and when the electromagnetic coil is in the energized state, the armature disk will be attracted to the yoke side, and the brake is released to make the inner disk form a free state. The Chinese Patent Publication No. CN 107869538A "Electromagnetic Brake" also provides an electromagnetic brake which generates a magnetic field when the coil is energized to move the armature in the direction of the brake stator structure, and the armature and the friction plate are separated.

However, the current general electromagnetic brake can only generate or disable the braking force by energizing or de-energizing, and can not linearly control the electromagnetic brake, and can not further control the magnitude and actuation period of the braking force; thus, how to provide a kind of The brake mode of the electromagnetic brake is improved, so that the electromagnetic brake can achieve the control of the braking force and the actuation cycle, which becomes the direction that the creator thinks.

Nowadays, the creator is still in the light of the indefatigable spirit of the above-mentioned existing electromagnetic brake structure, and it is improved by its rich professional knowledge and years of practical experience. And based on this research and creation of this creation.

The main purpose of this creation is to provide an electromagnetic brake structure. The oscillation control unit in the circuit structure outputs a waveform to control the switching period of the electromagnetic brake, and the oscillation control unit can adjust the waveform frequency and the pulse width to further control the braking force of the electromagnetic brake. Achieve linear control.

In order to achieve the above-mentioned implementation purpose, an electromagnetic brake structure is provided, which comprises a power supply unit; an electromagnetic brake is electrically connected to the power supply unit by a coil end; and a voltage stabilizing unit is electrically connected to the power supply unit and the electromagnetic The brake unit is a parallel electromagnetic brake; and an oscillation control unit is electrically connected to the electromagnetic brake through a switch unit, and the oscillation control unit adjusts the pulse width of the output waveform to make the electromagnetic brake generate a rapid pulsation clutch.

In one embodiment of the present invention, the voltage stabilizing unit is connected to one end of a Zener diode in series with a Zener diode, and the second voltage body is connected in parallel with a first voltage stabilizing capacitor. At the other end, a second voltage stabilizing capacitor and a counter-countercurrent diode are connected in series.

In an embodiment of the present invention, the filtering unit is a filter resistor connected in parallel with a filter capacitor.

In an embodiment of the present invention, the oscillation control unit has a first logic gate connected to one end of the oscillation capacitor, and the other end of the oscillation capacitor is further connected in parallel with a first variable resistor and a first oscillation diode, a second variable resistor and a second oscillating diode, an oscillating resistor and a second logic gate.

In one embodiment of the present invention, the oscillation control unit is a microcomputer single-chip circuit.

In one embodiment of the present invention, the switching unit is a Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET).

In one embodiment of the present invention, the drain of the switch unit (Drain, D) is electrically connected to the electromagnetic brake.

The purpose of this creation and its structural and functional advantages will be explained in accordance with the structure shown in the following figure, in conjunction with specific examples, so that the review committee can have a deeper and more specific understanding of the creation.

Referring to the first figure and the second figure, an electromagnetic brake structure is provided, which comprises a power supply unit (1); an electromagnetic brake (2) is electrically connected to the power supply unit by a coil end (21) (1) a voltage stabilizing unit (3) is electrically connected to the power supply unit (1) and the electromagnetic brake (2), and the voltage stabilizing unit (3) can be one end of a Zener diode connected in series with a voltage stabilizing resistor. The first diode is connected in parallel with a first voltage-stabilizing capacitor, and the other end of the voltage-stabilizing resistor is connected in series with a second voltage-stabilizing capacitor and a counter-current diode, or a 7805 single-chip circuit as a voltage stabilizing unit. (3); a filtering unit (4), which is a parallel electromagnetic brake (2), and the filtering unit (4) has a filter resistor connected in parallel with a filter capacitor;

And an oscillating control unit (5) electrically connecting the electromagnetic brake (2) through a drain of a switching unit (6), wherein the oscillating control unit (5) adjusts the pulse width of the output waveform, and the switch unit (6) It can be a Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) switch or a transistor switch; wherein the oscillation control unit (5) has a first logic gate connected in series with an oscillation capacitor One end, the other end of the oscillating capacitor is further connected in parallel with a first variable resistor and a first oscillating diode, a second varistor and a second oscillating diode, an oscillating resistor and a second logic gate. Or a microcomputer single-chip circuit as the oscillation control unit (5).

In addition, the scope of the present invention may be further limited by the following specific embodiments, but is not intended to limit the scope of the present invention in any way.

Please continue to refer to the first figure and the second figure. The electromagnetic brake structure of the present invention mainly supplies the electric power of the electromagnetic brake (2) by the power supply unit (1), and the voltage stabilizing unit (3) provides stable electric power and signals to the electromagnetic brake. (2); when the power supply unit (1) is turned on, the coil end (21) of the electromagnetic brake (2) is excited, and the magnetic coil end (21) will be opposite to the coil end (21). The magnetic element (22) at the other end is attracted to generate braking force or release braking force, as shown in the third figure.

This creation can not only generate or release the braking force of the electromagnetic brake (2), but also control the switching period of the electromagnetic brake (2) and the generated braking force through the oscillation regulating unit (5); the first logic gate is connected in series One end of the oscillating capacitor, the other end of the oscillating capacitor is electrically connected to a first variable resistor, a first oscillating diode, a second varistor, a second oscillating diode, an oscillating resistor and a first a second logic gate, wherein the first variable resistor and the first oscillating diode are connected in parallel with the second varistor and the second oscillating diode, the second varistor and the second oscillating diode are further parallel oscillating resistor and Two logic gates to form an oscillation control unit (5);

The oscillation control unit (5) outputs a waveform signal to the switch unit (6). In this embodiment, the switch unit (6) is described by a metal oxide semiconductor field effect transistor (MOSFET) switch, that is, the gate of the MOSFET. (Gate, G), when the waveform is high, the switching unit (6) can be biased and turned on, and the switching unit (6) will output an electrical signal from the drain, and the electromagnetic brake (2) The coil end (21) is energized to adsorb the magnetic element (22), so that the function of controlling the switching period of the electromagnetic brake (2) can be achieved; when the structure of the electromagnetic controller of the present invention is applied to the brake of the mobile machine, it can be increased. The handling of the implements allows for better linear resistance control.

Furthermore, the oscillation control unit (5) can also adjust the waveform pulse width, that is, the time for controlling the square wave to be at a high potential and the time for the low potential, and the first variable resistor and the second variable resistor are used to change the output waveform. The width ratio is high. When the pulse width of the high potential is wide, the excitation time of the coil end (21) representing the electromagnetic brake (2) is longer, and the average value of the electric power is higher, and the pulse width of the low potential is higher. When it is wide, it means that the coil end (21) of the electromagnetic brake (2) has a longer non-exciting time, which will cause the average value of the power to be lower. Thus, the electromagnetic brake can be controlled by using the change of the average value of the electric power (2) The amount of braking force generated.

In addition, referring to the fourth figure, the microcomputer single-chip circuit is used as an embodiment of the oscillation control unit (5). The oscillation control unit (5) comprises a microcomputer single chip (CPU) and an electrical connection microcomputer. The digital data control unit of the chip, since the microcomputer single chip needs to use a digital signal, it needs to be controlled by the data of the digital signal to adjust the waveform frequency and the pulse width.

It can be seen from the above description that the present creation has the following advantages compared with the prior art:

1. The oscillation control unit of the electromagnetic brake structure of the present invention can output a waveform signal to control the switching period and the pulse width ratio of the electromagnetic brake with the high potential of the waveform and the low potential signal, so that the electromagnetic brake generates a fast pulsating clutch when applied to the mobile When the machine is used, it can effectively increase the smoothness and linear control of the mobile machine.

2. The oscillation control unit of the electromagnetic brake structure of the present invention can also adjust the pulse width of the waveform signal, so that the power received by the coil end of the electromagnetic brake is divided into high and low, and the braking force generated by the electromagnetic brake is changed with different electric power. Improve the problem that the conventional electromagnetic brake cannot adjust the braking force.

3. The structure of the electromagnetic brake can also be constructed by a single-chip controlled circuit to form a voltage stabilizing unit or an oscillating control unit, or a non-single-chip controlled circuit to form a voltage stabilizing unit or an oscillating control unit. The voltage unit can use a 7805 single-chip circuit, and the oscillation control unit can use a microcomputer single-chip circuit to control the operation of the electromagnetic brake in various aspects.

In summary, the electromagnetic brake structure of the present invention can achieve the intended use effect by the above disclosed embodiments, and the creation has not been disclosed before the application, and has fully complied with the requirements and requirements of the patent law. . If you apply for a new type of patent in accordance with the law, you are welcome to review it and grant a patent.

However, the illustrations and descriptions disclosed above are only preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention; those who are familiar with the skill are otherwise characterized by the scope of the creation. Equivalent changes or modifications shall be considered as not departing from the design of this creation.

(1)‧‧‧Power supply unit

(2)‧‧‧Electromagnetic brake

(21)‧‧‧ coil end

(22)‧‧‧ Magnetic components

(3) ‧ ‧ voltage regulator unit

(4) ‧‧‧Filter unit

(5) ‧‧‧Oscillation control unit

(6)‧‧‧Switch unit

First Figure: An architectural block diagram of a preferred embodiment of the present invention.

Second figure: Schematic diagram of the circuit structure of the preferred embodiment of the present invention.

Third: A schematic view of the appearance of an electromagnetic brake of the preferred embodiment of the present invention.

Fourth figure: Schematic diagram of the circuit structure of another embodiment of the present creation.

Claims (7)

An electromagnetic brake structure, comprising: a power supply unit; an electromagnetic brake electrically connected to the power supply unit by a coil end; a voltage stabilizing unit electrically connecting the power supply unit and the electromagnetic brake; a filter unit is connected in parallel with the electromagnetic brake; and an oscillation control unit is electrically connected to the electromagnetic brake through a switch unit, wherein the oscillation control unit adjusts the output waveform frequency and the pulse width, so that the electromagnetic brake generates a fast pulsation clutch . The electromagnetic brake structure of claim 1, wherein the voltage stabilizing unit is connected to one end of a voltage stabilizing resistor by a Zener diode, and the second pole body is further connected in parallel to the first stable state. The piezoelectric capacitor, the other end of the voltage stabilizing resistor is connected in series with a second stabilizing capacitor and a counter-reverse diode. The electromagnetic brake structure of claim 1, wherein the filtering unit is a filter resistor connected in parallel with a filter capacitor. The electromagnetic brake structure of claim 1, wherein the oscillation control unit has a first logic gate connected to one end of an oscillation capacitor, and the other end of the oscillation capacitor is further connected in parallel with a first variable resistor and a first An oscillating diode, a second variable resistor and a second oscillating diode, an oscillating resistor and a second logic gate. The electromagnetic brake structure of claim 1, wherein the oscillation control unit is a microcomputer single-chip circuit. The electromagnetic brake structure of claim 1, wherein the switching unit is a Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET). The electromagnetic brake structure of claim 1, wherein the drain (Drain, D) of the switch unit is electrically connected to the electromagnetic brake.