Non-contact discrete angle detection device for electric flip driver

Abstract

The utility model discloses a non-contact discrete angle detection device for an electric flip driver. The angle detection device comprises a rotation signal disc which rotates along with an output shaft of the electric flip driver. At least two permanent magnets are arranged on the end face of the rotating signal panel, Hall sensors responding to changes of magnetic fields of the permanent magnets are arranged at the positions corresponding to the permanent magnets, the Hall sensors are installed on a PCB which judges the rotating angle of the rotating signal panel according to the changes of the magnetic fields, and the PCB is electrically connected with a motor control mainboard. The motor control mainboard is used for controlling the working state of the motor. According to the device, traditional angle detection gears and other assemblies can be omitted, the occupied space is effectively reduced, meanwhile, the accuracy and reliability of angle detection are guaranteed, and the overall performance and market competitiveness of products are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric flip cover driver detection, in particular to a non-contact discrete angle detection device for the electric flip cover driver. Background Art

[0002] With the continued economic development and significant improvements in people's living standards, demand for bathroom and household appliances is growing, with increasing expectations for product intelligence and automation. Driven by this market demand, smart home appliances such as smart toilets, smart dishwashers, smart sinks, and smart washing machines have emerged and gradually become mainstream. Among them, automatic lid functions, as a key embodiment of intelligence and automation, have gained widespread consumer favor.

[0003] Currently, there are a variety of electric flip-top actuators on the market that drive the lid. Their core components include a housing, a motor that provides power, a reduction gear assembly connected to the motor, and an output shaft. These electric flip-top actuators use a PCB to control the movement of the motor-reduction assembly, achieving automatic flapping of the lid, such as the lid and seat of a smart toilet.

[0004] However, in actual operation, the rotation angles of the seat cover and seat ring must be accurately detected and fed back to effectively control the motor's operating status. Currently, potentiometers are the primary method used for angle detection. While this method offers certain advantages, such as high accuracy and fast response, it requires numerous components, is cumbersome to install, and requires significant space, hindering compact product design and cost control.

[0005] Therefore, to address the shortcomings of the existing technology, the present invention provides a non-contact discrete angle detection device. This device can eliminate traditional angle detection gears and other components, effectively reducing space usage while ensuring the accuracy and reliability of angle detection, thereby improving the overall performance and market competitiveness of the product. Utility Model Content

[0006] In view of the problems existing in the prior art, the utility model provides a non-contact discrete angle detection device for an electric flip cover driver.

[0007] The present utility model is implemented as follows: a non-contact discrete angle detection device for an electric flip cover driver, the angle detection device comprising a rotating signal disk that rotates along with the output shaft of the electric flip cover driver; at least two permanent magnets are provided on the end face of the rotating signal disk; Hall sensors that respond to changes in the permanent magnet magnetic field are provided at corresponding positions of the permanent magnets; the Hall sensors are mounted on a PCB circuit board that determines the rotation angle of the rotating signal disk based on changes in the magnetic field; the PCB circuit board is electrically connected to a motor control main board, and the motor control main board is used to control the operating state of the motor.

[0008] Preferably, the permanent magnets are distributed on the same pitch circle and are arranged at equal intervals.

[0009] Preferably, a permanent magnet mounting hole is provided on the rotating signal disk; the permanent magnet is a columnar permanent magnet, and is fixedly mounted in the permanent magnet mounting hole of the rotating signal disk by interference fit or gluing.

[0010] Preferably, the rotating signal disk is a final output gear, that is, a mounting hole is provided on the end face of the final output gear, and a permanent magnet is installed in the mounting hole.

[0011] Preferably, the rotary signal disk is mounted on the power output shaft of the electric flip cover drive and rotates together with the power output shaft.

[0012] The advantages and technical effects of the present invention are as follows: the non-contact continuous angle detection device adopts the exquisite combination of permanent magnet and Hall sensor, and its advantages are particularly prominent compared with the traditional contact angle sensor.

[0013] Firstly, the non-contact design avoids direct friction between brushes and contact components such as carbon film resistors, significantly reducing wear and aging. This means the device can maintain high precision and stability over time, ensuring the accuracy of the flip cover's open and closed positions, greatly improving the device's operational accuracy and reliability.

[0014] Secondly, thanks to the combination of permanent magnets and Hall sensors, the device can demonstrate excellent performance in a variety of harsh operating environments. It is unaffected by impurities such as dust and oil, and can operate stably in extreme conditions such as humidity, high temperatures, and low temperatures, effectively extending its service life.

[0015] Furthermore, the non-contact continuous angle detection device has a more compact structure and is easier to install and maintain. This not only reduces manufacturing costs but also makes it easier for users to perform maintenance and upkeep during use, further reducing operating costs.

[0016] In summary, the non-contact continuous angle detection device, with its high precision, high stability, excellent environmental adaptability, and low cost, provides users with a more intelligent, efficient, and reliable solution. In applications such as electric clamshell actuators, it has demonstrated excellent technical results, providing users with a superior user experience. With the continuous development and improvement of technology, it is expected that the non-contact continuous angle detection device will be widely used and promoted in even more fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the internal structure of the electric flip cover driver according to Example 1 of the present utility model;

[0018] Figure 2 This is a schematic diagram of the structure with the end cover removed on the output shaft side;

[0019] Figure 3 It is a PCB circuit board according to the structural diagram;

[0020] Figure 4 It is a structural schematic diagram of embodiment 2 of the present utility model.

[0021] In the figure, 1. Housing; 2. Motor; 3. Speed ​​reduction device; 3-1. Final output gear; 4. Output shaft; 4-1. Carbon film resistor; 5. Non-contact discrete angle detection device; 5-1. Rotating signal disk; 5-10. Permanent magnet mounting hole; 5-2. Permanent magnet; 5-3. Hall sensor; 5-4. PCB circuit board. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] Example 1, please refer to Figures 1 to 3 An electric flip-top actuator comprises a housing 1, a drive motor 2, a reduction gear 3, and an output shaft 4. The output shaft extends from the housing end cap 1-1. The actuator also includes a non-contact discrete angle detection device 5 for detecting the output shaft's rotation angle. The inclusion of this angle detection device is crucial in the design of electric flip-top actuators. This device, cleverly mounted on the output shaft inside the front end cap, accurately detects the drive shaft's rotation angle. Electrically connected to the control motherboard, the angle detection device not only transmits real-time position information about the drive shaft but also provides crucial feedback on the motor's operating status.

[0024] The non-contact discrete angle detection device includes a rotating signal disk 5-1 that rotates with the output shaft of the electric flip cover driver; at least two permanent magnets 5-2 are arranged on the end face of the rotating signal disk, and Hall sensors 5-3 that respond to changes in the permanent magnet magnetic field are provided at the corresponding permanent magnet positions. The Hall sensors are installed on a PCB circuit board 5-4 that determines the rotation angle of the rotating signal disk according to changes in the magnetic field. The PCB circuit board is electrically connected to the motor control main board, and the motor control main board is used to control the working state of the motor.

[0025] Preferably, the permanent magnets are distributed on the same pitch circle and are arranged at equal intervals.

[0026] Preferably, the rotating signal disk is provided with permanent magnet mounting holes 5-10; the permanent magnets are columnar permanent magnets, which are fixedly mounted in the permanent magnet mounting holes of the rotating signal disk by interference fit or gluing.

[0027] In this embodiment, the rotating signal disk 5-1 is the final output gear 3-1, that is, a mounting hole is provided on the end face of the final output gear, and a permanent magnet is installed in the mounting hole. This technical feature brings the following technical effects:

[0028] Integrated Design: The rotating signal disc and the final output gear are combined into one, achieving structural integration. This design not only reduces the number of components and simplifies the transmission chain, but also saves valuable installation space and makes the overall design more compact.

[0029] Improved detection accuracy: Because the rotating signal disc is directly connected to the final output gear, it can more directly and accurately reflect the rotation angle of the power output. This design eliminates the errors that may be introduced by multi-component transmission and improves the accuracy of angle detection.

[0030] Enhanced system stability: By reducing the number of transmission links, system instability caused by wear or loosening of transmission components is reduced. At the same time, the stability of the permanent magnet also ensures the continuous and accurate output of the angle signal, thereby enhancing the stability of the entire system.

[0031] Simplified maintenance: The integrated design of the rotating signal disc and the final output gear simplifies maintenance or replacement. Maintenance personnel only need to focus on the status of this integrated assembly, rather than checking and handling multiple individual components.

[0032] Lower manufacturing costs: Although the integrated design may increase manufacturing difficulty initially, in the long run, it reduces the number of components and simplifies the transmission chain, which helps reduce overall manufacturing costs. At the same time, by reducing potential failure points, it also reduces subsequent maintenance costs.

[0033] Example 2, please refer to Figure 4 The rotating signal disc is mounted on the power take-off shaft of the electric flip drive and rotates with the shaft. The split design allows the rotating signal disc and the final output gear to be maintained or replaced separately, reducing maintenance difficulty and cost.

[0034] Easy to upgrade and modify: With the development of technology, if the angle detection device needs to be upgraded or modified, the split design makes this process easier and faster.

[0035] This angle detection device operates on the principle of fixed-point discrete angle detection. Specifically, it uses the final output gear as a rotating signal disk, with permanent magnets placed on its end faces. These permanent magnets generate a changing magnetic field as the gear rotates.

[0036] A Hall effect sensor is a component that responds to changes in magnetic field. When a permanent magnet approaches or moves away from the sensor as the gear rotates, the sensor outputs a corresponding electrical signal. These Hall effect sensors are mounted on a printed circuit board (PCB), which uses the electrical signals output by the Hall effect sensors to determine the rotation angle of the final output gear. Specifically, the processing circuitry on the PCB decodes and processes the Hall effect sensor output signals to determine the current position, or rotation angle, of the gear.

[0037] For example, if five permanent magnets are placed within a ±120° rotation angle range, with adjacent permanent magnets at a 30° center angle, each permanent magnet will approach and trigger its corresponding Hall effect sensor as the gear rotates. This allows the circuit board to detect the gear's rotation angle with a 30° resolution and achieve precise angular control.

[0038] Finally, the PCB is electrically connected to the motor control motherboard, transmitting the detected angle information to the motherboard. The motor control motherboard then controls the motor's operating state based on this information, ensuring that the flip cover can flip to the set angle.

[0039] The importance of the angle detection device 5 lies first in its precise control of the lid's flapping motion. The lid of a smart toilet must strictly adhere to a set angle to ensure the desired effect with every use. The angle detection device is the guardian of this process, constantly monitoring the rotation of the drive shaft to ensure that the lid flips into place accurately at the set angle. This means that no matter when the user uses the smart toilet, the lid's flapping motion remains smooth and stable, providing a more comfortable and convenient user experience.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A non-contact discrete angle detection device for an electric flip cover actuator, characterized by: The angle detection device includes a rotating signal disk that rotates along with the output shaft of the electric flip cover driver; at least two permanent magnets are arranged on the end face of the rotating signal disk, and Hall sensors that respond to changes in the permanent magnet magnetic field are provided at the corresponding positions of the permanent magnets. The Hall sensors are mounted on a PCB circuit board that determines the rotation angle of the rotating signal disk based on changes in the magnetic field. The PCB circuit board is electrically connected to a motor control main board, which is used to control the working state of the motor.

2. The non-contact discrete angle detection device for an electric flip cover actuator according to claim 1, characterized in that: The permanent magnets are distributed on the same pitch circle and are arranged at equal intervals.

3. The non-contact discrete angle detection device for an electric flip cover actuator according to claim 2, characterized in that: The rotating signal disk is provided with a permanent magnet mounting hole; the permanent magnet is a columnar permanent magnet, which is fixedly mounted in the permanent magnet mounting hole of the rotating signal disk by interference fit or gluing.

4. The non-contact discrete angle detection device for an electric flip cover actuator according to claim 1, characterized in that: The rotating signal disk is the final output gear, that is, a mounting hole is provided on the end face of the final output gear, and a permanent magnet is installed in the mounting hole.

5. The non-contact discrete angle detection device for an electric flip cover actuator according to claim 1, characterized in that: The rotating signal disk is mounted on the power output shaft of the electric flip cover driver and rotates along with the power output shaft.

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