Electric window opener protection mechanism

Abstract

The utility model relates to an electric window opener protection mechanism which comprises a motor driver and a driving motor, the motor driver is electrically connected with the driving motor, a first integrated voltage stabilizing circuit and a second integrated voltage stabilizing circuit are arranged between the motor driver and the driving motor, a first integrated circuit is connected with the driving motor through a first relay protection circuit, and a second integrated circuit is connected with the driving motor through a second relay protection circuit. The second integrated voltage stabilizing circuit is connected with the driving circuit through a second relay protection circuit, the first relay protection circuit and the second relay protection circuit are connected with any two items of the driving motor, and the relay serves as a component of which a contact can be closed only when a relay coil is powered on. According to the electric window opener, the relay can be switched on only when the electric window opener works electrically, the relay is switched off automatically after the electric operation is finished, and the first relay protection circuit and the second relay protection circuit protect the motor driver from being damaged by current and voltage generated by high-speed rotation of the window motor in a manual power-off state.

Description

Technical Field

[0001] The utility model relates to the technical field of electric window openers, in particular to a protection mechanism for an electric window opener. Background Art

[0002] The main function of the electric window opener is to open and close the windows automatically and intelligently to improve the efficiency of ventilation, smoke exhaust and safety. By automatically adjusting the opening and closing degree of the windows, the electric window opener can help achieve natural ventilation in the room and effectively improve the indoor air quality. For some high windows or windows that are not easy to operate manually, the electric window opener provides a convenient and safe opening method to avoid the dangers caused by human operation. Some electric window openers, such as chain window openers, can be built into the window frame, which not only saves space, but also keeps the window simple and beautiful.

[0003] The publication number is: CN210363774U. It discloses an overload protection system for an electric window opener, including a current detection device and a controller. The current signal sending end of the current detection device is connected to the current signal receiving end of the controller, and the control signal sending end of the controller is connected to the speed control end of the drive motor of the electric window opener. The current detection device is used to detect the current in the main circuit of the drive motor of the electric window opener, and send a current signal indicating the current size to the controller. The controller receives the current signal and compares the detected current with the preset current. If the detected current is greater than the preset current, the drive motor is controlled to stop working, effectively preventing the electric window opener from overloading. The electric window opener protection system does not provide further protection for the motor. The existing electric window openers on the market have manual and automatic integrated functions. When the window sash is manually pushed to open or close, the window belt gear box rotates and drives the motor to rotate at high speed. When the motor rotates passively, a higher voltage and current will be generated, which is easy to damage the motor driver. Therefore, this technology still has a certain room for modification. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide an electric window opener protection mechanism in view of the deficiencies of the above-mentioned prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an electric window opener protection mechanism, including a motor driver and a drive motor, wherein the motor driver is electrically connected to the drive motor, and is characterized in that a first integrated voltage stabilizing circuit and a second integrated voltage stabilizing circuit are provided between the motor driver and the drive motor, the first integrated circuit is connected to the drive motor by setting a first relay protection circuit, and the second integrated voltage stabilizing circuit is connected to the drive circuit by setting a second relay protection circuit.

[0006] By adopting the above technical scheme, when the power supply voltage fluctuates or the current is too large, the first integrated voltage stabilizing circuit and the second integrated voltage stabilizing circuit can stabilize the output voltage to prevent the power supply voltage from damaging the drive motor and the motor driver. The first relay protection circuit and the second relay protection circuit are connected to any two of the drive motors. The relay is a component whose contacts can only be closed when the relay coil is energized, so that the electric window opener can turn on the relay during electric operation and automatically disconnect the relay after the electric operation ends. The first relay protection circuit and the second relay protection circuit protect the window belt gearbox from rotating when the power is manually turned off, and the current and voltage generated by driving the motor to rotate at high speed will not cause damage to the motor driver.

[0007] The above-mentioned electric window opener protection mechanism can be further configured as follows: the first relay protection circuit includes a relay KA1, one end of the relay KA1 contact is connected to the first integrated voltage stabilizing circuit, the other end of the relay KA1 contact is connected to any one of the drive motors, the other end of the relay KA1 is connected to an external power supply, and the relay KA1 is connected in parallel with a first protection component.

[0008] By adopting the above technical solution, any one of the drive motors is connected to the relay KA1, one end of the contact of the relay KA1 is connected to the first integrated voltage stabilizing circuit, and the other end of the contact is connected to any one of the drive motors. In the power use state, the first integrated voltage stabilizing circuit can stabilize the input voltage to ensure that the drive motor obtains a stable power supply. The relay KA1 contact is energized to drive the motor to work. In the manual state, the window belt gearbox rotates, and drives the motor to rotate at high speed, which will generate a certain current and voltage. The relay KA1 is in an open state, and the current generated by the drive motor will not flow to the motor driver to cause damage, thereby protecting the motor driver of the electric window opener. The first protection component is connected in parallel with the relay KA1 to prevent the power supply voltage from being reversed and the current from being reversed, making the circuit more stable.

[0009] The above-mentioned electric window opener protection mechanism can be further configured as follows: the second relay protection circuit includes a relay KA2, the relay KA2 is connected in parallel with a second protection component, one end of the relay KA2 is connected to an external power supply, one end of the relay KA2 contact is connected to the second voltage stabilizing circuit, and the other end of the relay KA2 is connected to any one of the drive motors.

[0010] By adopting the above technical scheme, the second voltage-stabilizing drive circuit connected to relay KA2 can cut off the circuit in time when the power supply voltage of the electric window opener is unstable or the driving motor is overloaded in the electrical working state, thereby protecting the normal operation of the electric window opener. At the same time, in the manual state, since relay KA2 is not energized and the contacts are not closed, the current and voltage generated by the rotation of the motor driven by the windowsill will not damage the motor driver. The setting of the second protection component further protects relay KA2 and the electric window opener, and improves the service life of the electric window opener. Relay KA1 and relay KA2 can use relays of the same specifications or relays of different specifications. Therefore, the second relay protection circuit and the first relay protection circuit can use different component layouts. This application uses the same component layout to greatly save production design costs.

[0011] The above-mentioned electric window opener protection mechanism can be further configured as follows: the first integrated voltage-stabilizing circuit includes a voltage-stabilizing transistor Q1, the base of the voltage-stabilizing transistor Q1 is connected to a resistor R1, the other end of the resistor R1 is connected to any end of the motor driver, a resistor R2 and a filter capacitor C1 are connected in parallel between the base of the voltage-stabilizing transistor Q1 and the generating electrode, the collector of the voltage-stabilizing transistor Q1 is connected to an external power supply, the collector of the voltage-stabilizing transistor Q1 is also connected to one end of the contact of the relay KA1, and the voltage-stabilizing transistor Q1 is also provided with a first status display component for displaying the working status.

[0012] By adopting the above technical solution and setting a voltage-stabilizing transistor Q1, a stable power supply for the motor driver can be achieved. Resistors R1 and R2 divide the voltage of the circuit. Filter capacitor C1 can filter and stabilize the voltage of the circuit. Relay KA1 can control the switch of the circuit to turn the motor on and off. A first state component is provided at the collector of the voltage-stabilizing transistor Q1, which makes it easier to observe the working state of the circuit during use.

[0013] The above-mentioned electric window opener protection mechanism can be further configured as follows: the second integrated voltage-stabilizing circuit includes a voltage-stabilizing transistor Q2, a resistor R3 and a filter capacitor C2 are connected in parallel between the base and emitter of the voltage-stabilizing transistor Q2, a resistor R4 is provided at the other end of the filter capacitor C2, the resistor R4 is connected to any end of the motor driver, the collector of the voltage-stabilizing transistor Q2 is connected to one end of the contact of the relay KA2, the collector of the voltage-stabilizing transistor Q2 is also provided with a second status display component, and the second status display component is connected to an external power supply.

[0014] By adopting the above technical solution, a second status display component is provided at the collector of the voltage-stabilizing transistor Q3, which can facilitate users to understand the working conditions of the line. The resistor R3 connected in parallel between the base and the emitter of the voltage-stabilizing transistor Q3, the filter capacitor C2 and the resistor R4 connected in series with the filter capacitor C2 can produce filtering and voltage division effects. The connected relay KA2 provides a safe working voltage to control the conduction or closing of the line.

[0015] The above-mentioned electric window opener protection mechanism may be further configured as follows: the first protection component and the second protection component are a reverse-connected diode D1 and a reverse-connected diode D2.

[0016] By adopting the above technical solution, the reverse diode D1 and the reverse diode D2 are used as protection components to prevent the circuit from being damaged due to the wrong current direction. When the power supply voltage is reversed, the reverse diode can be turned on to conduct the reverse current into the ground wire, thereby protecting the circuit from damage. In addition, the reverse diode can also be used for applications such as filtering and voltage stabilization to improve the stability and reliability of the circuit.

[0017] The above-mentioned electric window opener protection mechanism can be further configured as follows: the first status display component includes a light-emitting diode LED1, one end of the light-emitting diode LED1 is connected to the collector of the voltage-stabilizing transistor Q1, the other end of the light-emitting diode LED1 is connected in series with a resistor R5, and the other end of the resistor R5 is connected to an external power supply.

[0018] By adopting the above technical solution, the working status of the circuit can be displayed in real time by setting the light-emitting diode LED1 as the first status display. When the circuit works normally, the light-emitting diode LED1 will light up, indicating that the circuit is in a normal state. The resistor R5 can limit the current and protect the light-emitting diode LED1. This design can improve the reliability of the circuit and the user experience.

[0019] The above-mentioned electric window opener protection mechanism can be further configured as follows: the second status display component includes a light-emitting diode LED2, one end of the light-emitting diode LED2 is connected to the collector of the voltage-stabilizing transistor Q2, the other end of the light-emitting diode LED2 is connected in series with a resistor R6, and the other end of the resistor R5 is connected to an external power supply.

[0020] With the above technical solution, when the circuit works normally, the light emitting diode LED2 will light up, indicating that the circuit is in a normal state, and the resistor R6 acts as a protection device to protect the LED2 to work normally.

[0021] The above-mentioned electric window opener protection mechanism can be further configured as follows: the motor driver includes a single-chip microcomputer chip MUC, the resistors R1 and R2 are connected to any interface of the single-chip microcomputer, and the single-chip microcomputer is also provided with an overvoltage detection unit.

[0022] By adopting the above technical solution, the single-chip microcomputer MUC serves as the control unit of the motor driver to achieve precise control of the motor. The single-chip microcomputer MUC has powerful computing and control capabilities, can implement complex control algorithms and logical judgments, can improve the intelligence and flexibility of the motor driver, and meet the needs of different application scenarios. The purpose of setting the overvoltage protection unit is to prevent the motor from being damaged due to overload. When the motor load is too large, the motor current will exceed the rated value, causing the motor to overheat, burn out and other faults. By setting the overvoltage protection unit, the power supply can be automatically cut off when the motor load exceeds the rated value to protect the motor from damage.

[0023] The above-mentioned electric window opener protection mechanism can be further configured as follows: the driving motor is a brushless motor.

[0024] By adopting the above technical solution, since the brushless motor has no brushes and commutator, it can reduce mechanical friction and energy loss and improve the efficiency of the motor. The design of the brushless motor enables it to produce higher power output while occupying less space, with a relatively simple structure, a low failure rate and high reliability.

[0025] The beneficial effects of the utility model are as follows: the first relay protection circuit, the second relay protection circuit are connected to any two of the drive motors; the relay is a component whose contacts can only be closed when the relay coil is energized, so that the electric window opener can turn on the relay only when it is electrically working, and automatically disconnect the relay after the electric operation ends; the first relay protection circuit and the second relay protection circuit protect the window drive motor from causing damage to the motor driver when the current and voltage generated by the high-speed rotation in the manual non-powered state. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A circuit diagram of the utility model;

[0027] Figure 2 It is a system flow chart of the utility model;

[0028] Reference numerals: 1-motor driver, 2-driving motor. DETAILED DESCRIPTION

[0029] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0030] like Figure 1The utility model provides the following technical solution: a protection mechanism for an electric window opener, including a motor driver 1 and a drive motor 2, wherein the motor driver 1 is electrically connected to the drive motor 2, and is characterized in that: a first integrated voltage stabilizing circuit and a second integrated voltage stabilizing circuit are arranged between the motor driver 1 and the drive motor 2, the first integrated circuit is connected to the drive motor 2 by setting a first relay protection circuit, and the second integrated voltage stabilizing circuit is connected to the drive circuit by setting a second relay protection circuit. When the power supply voltage fluctuates or the current is too large, the first integrated voltage stabilizing circuit and the second integrated voltage stabilizing circuit can stabilize the output voltage to prevent the power supply voltage from damaging the drive motor 2 and the motor driver 1. The first relay protection circuit and the second relay protection circuit are connected to any two of the drive motor 2. The relay is a component whose contacts can only be closed when the relay coil is energized, so that the electric window opener can turn on the relay when it is working electrically, and automatically disconnect the relay after the electric operation ends. The first relay protection circuit and the second relay protection circuit protect the window belt gear box from rotating when the power is not turned on manually, and the current and voltage generated by the high-speed rotation of the motor will not damage the motor driver 1. The first relay protection circuit includes a relay KA1, one end of the contact of the relay KA1 is connected to the first integrated voltage stabilizing circuit, the other end of the contact of the relay KA1 is connected to any one of the drive motors 2, the other end of the relay KA1 is connected to an external power supply, and the relay KA1 is connected in parallel with a first protection component. Any one of the drive motors 2 is connected to the relay KA1, one end of the contact of the relay KA1 is connected to the first integrated voltage stabilizing circuit, and the other end of the contact is connected to any one of the drive motors 2. In the state of electrical use, the first integrated voltage stabilizing circuit can stabilize the input voltage to ensure that the drive motor 2 obtains a stable power supply. The contact of the relay KA1 is closed to drive the motor 2 to work. In the manual state, the window belt gear box rotates, and drives the motor to rotate at high speed to generate a certain current and voltage. The contact of the relay KA1 is in an open state, and the current generated by the drive motor 2 will not flow to the motor driver 1 in the direction to cause damage, thereby protecting the motor driver 1 of the electric window opener. The first protection component is connected in parallel with the relay KA1 to prevent the power supply voltage from flowing back and the current from flowing back, making the circuit more stable. The second relay protection circuit includes a relay KA2, the relay KA2 is connected in parallel with a second protection component, one end of the relay KA2 is connected to an external power supply, one end of the contact of the relay KA2 is connected to the second voltage stabilizing circuit, and the other end of the relay KA2 is connected to any one of the drive motors 2.The second voltage-stabilizing drive circuit connected to relay KA2 can cut off the circuit in time when the power supply voltage of the electric window opener is unstable or the drive motor 2 is overloaded in the electrical working state, thereby protecting the normal operation of the electric window opener. At the same time, in the manual state, since relay KA2 is not energized and the contact is not closed, the current and voltage generated by the window sill driving the motor to rotate will not damage the motor driver 1. The setting of the second protection component further protects relay KA2 and the electric window opener, and improves the service life of the electric window opener. Relay KA1 and relay KA2 can use relays of the same specifications or relays of different specifications. Therefore, the second relay protection circuit and the first relay protection circuit can use different component layouts. The application uses the same component layout to greatly save production design costs. ,

[0031] like Figure 1 -2 shows an electric window opener protection mechanism, the first integrated voltage stabilizing circuit includes a voltage stabilizing transistor Q1, the base of the voltage stabilizing transistor Q1 is connected to a resistor R1, the other end of the resistor R1 is connected to any end of the motor driver 1, a resistor R2 and a filter capacitor C1 are connected in parallel between the base of the voltage stabilizing transistor Q1 and the generating electrode, the collector of the voltage stabilizing transistor Q1 is connected to an external power supply, the collector of the voltage stabilizing transistor Q1 is also connected to one end of the contact of the relay KA1, and the voltage stabilizing transistor Q1 is also provided with a first state display component for displaying the working state, the voltage stabilizing transistor Q1 is set, the stable power supply to the motor driver 1 can be realized, the resistor R1 and the resistor R2 divide the circuit, the filter capacitor C1 can filter the circuit to stabilize the voltage, the relay KA1 can control the switch of the circuit to realize the opening and closing of the motor, and the collector of the voltage stabilizing transistor Q1 is provided with a first state component, which can make it easier to observe the working state of the circuit when in use, The second integrated voltage stabilizing circuit includes a voltage stabilizing transistor Q2, a resistor R3 and a filter capacitor C2 are connected in parallel between the base and emitter of the voltage stabilizing transistor Q2, a resistor R4 is provided at the other end of the filter capacitor C2, and the resistor R4 is connected to any end of the motor driver 1, the collector of the voltage stabilizing transistor Q2 is connected to one end of the contact of the relay KA2, and the collector of the voltage stabilizing transistor Q2 is also provided with a second state display component, and the second state display component is connected to an external power supply. The second state display component is provided at the collector of the voltage stabilizing transistor Q3 to facilitate users to understand the working conditions of the line. The resistor R3 connected in parallel between the base and emitter of the voltage stabilizing transistor Q3, the filter capacitor C2, and the resistor R4 connected in series with the filter capacitor C2 can produce filtering and voltage division effects, and the connected relay KA2 provides a safe working voltage to control the conduction or closing of the line. The first protection component and the second protection component are a reverse diode D1 and a reverse diode D2. Reverse diode D1 and reverse diode D2 are used as protection components to prevent the circuit from being damaged due to the wrong current direction. When the power supply voltage is reversed, the reverse diode can be turned on to conduct the reverse current into the ground wire, thereby protecting the circuit from damage. In addition, the reverse diode can also be used for filtering and voltage stabilization to improve the stability and reliability of the circuit. The first state display component includes a light-emitting diode LED1, one end of the light-emitting diode LED1 is connected to the collector of the voltage-stabilizing transistor Q1, and the other end of the light-emitting diode LED1 is connected in series with a resistor R5, and the other end of the resistor R5 is connected to an external power supply. By setting the light-emitting diode LED1 as the first state display, the working state of the circuit can be displayed in real time. When the circuit is working normally, the light-emitting diode LED1 will light up, indicating that the circuit is in a normal state. The resistor R5 can limit the current and protect the light-emitting diode LED1. This design can improve the reliability of the circuit and user experience.The second state display component includes a light-emitting diode LED2, one end of the light-emitting diode LED2 is connected to the collector of the voltage-stabilizing transistor Q2, the other end of the light-emitting diode LED2 is connected in series with a resistor R6, and the other end of the resistor R5 is connected to an external power supply. When the circuit is working normally, the light-emitting diode LED2 will light up, indicating that the circuit is in a normal state. The resistor R6 is used as a protection device to protect the normal operation of LED2. The motor driver 1 includes a single-chip microcomputer chip MUC. The resistors R1 and R2 are connected to any interface of the single-chip microcomputer. The single-chip microcomputer is also provided with an overvoltage detection unit. The single-chip microcomputer MUC serves as a control unit of the motor driver 1 and can realize precise control of the motor. The function of setting the overvoltage protection unit is to prevent the motor from being damaged due to overload. When the motor load is too large, the motor current will exceed the rated value, thereby causing the motor to overheat, burn out and other faults. By setting the overvoltage protection unit, the power supply can be automatically cut off when the motor load exceeds the rated value to protect the motor from damage. The drive motor 2 is a brushless motor. Since brushless motors have no brushes and commutators, they can reduce mechanical friction and energy loss and improve the efficiency of the motor. The design of brushless motors enables them to produce higher power output while occupying less space. They have a relatively simple structure, a low failure rate, and high reliability.

[0032] The beneficial effects of the utility model are as follows: the first relay protection circuit, the second relay protection circuit are connected to any two of the drive motor 2. The relay is a component whose contacts can only be closed when the relay coil is energized, so that the electric window opener can turn on the relay only when it is electrically working, and automatically disconnect the relay after the electric operation ends. The first relay protection circuit and the second relay protection circuit protect the current and voltage generated by the high-speed rotation of the window drive motor in the manual non-powered state, and will not cause damage to the motor driver 1.

Claims

1. An electric window opener protection mechanism, comprising a motor driver and a drive motor, wherein the motor driver is electrically connected to the drive motor, and characterized in that: A first integrated voltage stabilizing circuit and a second integrated voltage stabilizing circuit are provided between the motor driver and the drive motor. The first integrated voltage stabilizing circuit is connected to the drive motor by setting a first relay protection circuit, and the second integrated voltage stabilizing circuit is connected to the drive circuit by setting a second relay protection circuit.

2. The electric window opener protection mechanism according to claim 1, characterized in that: The first relay protection circuit includes a relay KA1, one end of the relay KA1 contact is connected to the first integrated voltage stabilizing circuit, the other end of the relay KA1 contact is connected to any one of the drive motors, the other end of the relay KA1 is connected to an external power supply, and the relay KA1 is connected in parallel with a first protection component.

3. The electric window opener protection mechanism according to claim 1, characterized in that: The second relay protection circuit includes a relay KA2, and the relay KA2 is connected in parallel with a second protection component. One end of the relay KA2 is connected to an external power supply, one end of the contact of the relay KA2 is connected to a second voltage stabilizing circuit, and the other end of the relay KA2 is connected to any one of the drive motors.

4. The electric window opener protection mechanism according to claim 1, characterized in that: The first integrated voltage-stabilizing circuit includes a voltage-stabilizing transistor Q1, the base of the voltage-stabilizing transistor Q1 is connected to a resistor R1, the other end of the resistor R1 is connected to any end of the motor driver, a resistor R2 and a filter capacitor C1 are connected in parallel between the base of the voltage-stabilizing transistor Q1 and the generating electrode, the collector of the voltage-stabilizing transistor Q1 is connected to an external power supply, the collector of the voltage-stabilizing transistor Q1 is also connected to one end of the contact of the relay KA1, and the voltage-stabilizing transistor Q1 is also provided with a first status display component for displaying the working status.

5. The electric window opener protection mechanism according to claim 1, characterized in that: The second integrated voltage-stabilizing circuit includes a voltage-stabilizing transistor Q2, a resistor R3 and a filter capacitor C2 are connected in parallel between the base and the emitter of the voltage-stabilizing transistor Q2, a resistor R4 is provided at the other end of the filter capacitor C2, the resistor R4 is connected to either end of the motor driver, the collector of the voltage-stabilizing transistor Q2 is connected to one end of the contact of the relay KA2, the collector of the voltage-stabilizing transistor Q2 is also provided with a second status display component, and the second status display component is connected to an external power supply.

6. The electric window opener protection mechanism according to claim 2, characterized in that: The first protection component and the second protection component are a reverse-connected diode D1 and a reverse-connected diode D2.

7. The electric window opener protection mechanism according to claim 4, characterized in that: The first status display component includes a light emitting diode LED1, one end of the light emitting diode LED1 is connected to the collector of the voltage stabilizing transistor Q1, the other end of the light emitting diode LED1 is connected in series with a resistor R5, and the other end of the resistor R5 is connected to an external power supply.

8. The electric window opener protection mechanism according to claim 5, characterized in that: The second state display component includes a light emitting diode LED2, one end of the light emitting diode LED2 is connected to the collector of the voltage stabilizing transistor Q2, the other end of the light emitting diode LED2 is connected in series with a resistor R6, and the other end of the resistor R6 is connected to an external power supply.

9. The electric window opener protection mechanism according to claim 4, characterized in that: The motor driver comprises a single-chip microcomputer chip MUC, the resistors R1 and R2 are connected to any interface of the single-chip microcomputer, and the single-chip microcomputer is also provided with an overvoltage detection unit.

10. An electric window opener protection mechanism according to any one of claims 1 to 5, characterized in that: The driving motor is a brushless motor.

Images