Non-contact continuous angle detection device and electric flip driver

Abstract

The utility model designs a non-contact continuous angle detection device and an electric flip driver, the angle detection device comprises a rotary signal panel, an arc groove is arranged on the end face of the rotary signal panel, and an arc permanent magnet with increased and / or decreased magnetic field intensity is embedded in the arc groove; the Hall sensor responds to the change of the magnetic field of the permanent magnet, the Hall sensor is arranged on a PCB (Printed Circuit Board) which judges the rotation angle and the rotation speed of the three-stage output bull gear according to the change of the magnetic field, and the PCB is arranged on the front end cover and is electrically connected with the motor controller. 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 continuous angle detection device. 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 continuous angle detection device. This device can eliminate traditional angle detection components such as gears, 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 continuous angle detection device.

[0007] The utility model is implemented as follows: a non-contact continuous angle detection device, characterized in that: the angle detection device includes a rotating signal disk, an arc groove is provided on the end face of the rotating signal disk, and an arc permanent magnet with increasing and / or decreasing magnetic field strength is embedded in the arc groove; a Hall sensor responds to changes in the magnetic field of the permanent magnet, the Hall sensor is installed on a PCB circuit board that determines the rotation angle and speed of the three-stage output gear according to the magnetic field changes, the PCB circuit board is installed on the front end cover, and the PCB circuit board is electrically connected to the motor controller.

[0008] Preferably, the thickness of the arc-shaped permanent magnet gradually increases from both ends to the middle.

[0009] Preferably, the arc-shaped permanent magnet is semicircular.

[0010] Preferably, the arc-shaped permanent magnet is fixedly installed in the arc-shaped slot by interference fit or gluing.

[0011] Preferably, an electric flip cover driver includes a housing, a drive motor, a reduction gear and an output shaft, and also includes an angle detection device for detecting the rotation angle of the output shaft, characterized in that the angle detection device adopts the above-mentioned non-contact continuous angle detection device.

[0012] 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.

[0013] Preferably, the rotating signal disk is mounted on a power output shaft of the electric flip cover driver and rotates together with the power output shaft.

[0014] The advantages and technical effects of the utility model are as follows: the non-contact continuous angle detection device adopts the ingenious combination of permanent magnets and Hall sensors, and particularly utilizes the principle of magnetic field changes. Compared with traditional positioner angle detection and fixed-point detection non-contact angle sensors, its advantages are particularly prominent and comprehensive.

[0015] First, the device demonstrates exceptional performance in terms of detection accuracy and stability. Utilizing the principle of magnetic field variation, the permanent magnet's magnetic field strength changes continuously and linearly with angle, enabling the Hall effect sensor to capture more precise and subtle angular variations. Compared to traditional positioners, it is unaffected by mechanical wear and aging, offering greater long-term stability and ensuring the accuracy of the flap's open and closed positions. Furthermore, compared to non-contact angle sensors that rely on fixed-point detection, this device enables continuous angle detection, eliminating the need for specific detection points and avoiding errors caused by improperly set detection points.

[0016] Secondly, the device also offers significant advantages in environmental adaptability. Traditional positioners are often affected by impurities such as dust and oil, resulting in reduced detection accuracy. Non-contact angle sensors for fixed-point detection can also be affected by harsh operating environments. However, the combination of permanent magnets and Hall sensors employed in this device enables it to maintain high sensitivity and stability in a variety of harsh operating environments. It operates stably in humid, high-temperature, and low-temperature environments, effectively extending its service life.

[0017] Furthermore, this device offers significant cost-effectiveness advantages. While traditional positioners may require a lower initial investment, they are susceptible to wear and aging, requiring regular replacement and maintenance, resulting in high long-term costs. While non-contact angle sensors for fixed-point detection offer improved accuracy, they require multiple detection points, increasing equipment complexity and manufacturing costs. In comparison, this device offers a more compact and simple structure, making it easier to install and maintain while significantly reducing both manufacturing and operating costs.

[0018] In summary, non-contact angle detection devices, with their high precision, high stability, excellent environmental adaptability, and low cost, offer users a more intelligent, efficient, and reliable solution. Compared to traditional positioner-based angle detection and fixed-point detection non-contact angle sensors, they offer significant advantages in many areas. In applications such as electric clamshell actuators, they will undoubtedly provide users with a superior user experience. With the continuous development and improvement of technology, we believe that this type of non-contact angle detection device will be widely used and promoted in even more fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic structural diagram of the electric flip cover driver according to the first embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the electric flip cover drive structure with the end cover removed;

[0022] Figure 4 is a schematic diagram of the end cover structure;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the electric flip cover driver without the end cover;

[0024] Figure 6a This is a schematic diagram of the structure of an arc-shaped permanent magnet that is thick in the middle and thin on both sides;

[0025] Figure 6b This is a schematic diagram of the structure of an arc-shaped permanent magnet that is thin in the middle and thick on both sides;

[0026] Figure 7 It is a structural diagram of application embodiment 2.

[0027] In the figure, 1. Rotating signal disk; 1-1. Arc-shaped slot; 2. Arc-shaped permanent magnet; 3. Hall sensor; 4. Output shaft; 5. Housing; 6. Motor; 7. Speed ​​reduction device; 7-1. Final output gear. DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figure 1 , a non-contact continuous angle detection device, characterized in that: the angle detection device includes a rotating signal disk 1 connected to the output shaft 4, an arc groove 1-1 is provided on the end surface of the rotating signal disk, and an arc permanent magnet 2 with increasing and / or decreasing magnetic field strength is embedded in the arc groove; a Hall sensor 3-1 responds to changes in the permanent magnet's magnetic field, and the Hall sensor is installed on a PCB circuit board 3 that judges the rotation angle and speed of the rotating signal disk according to the change in the magnetic field, and the PCB circuit board is installed on the front end cover 8. The PCB circuit board is electrically connected to the motor controller, and the motor controller controls the motor 6 to drive the output shaft to rotate.

[0030] Preferably, the thickness of the arc-shaped permanent magnet gradually increases from both ends to the middle (see Figure 6a ) or the thickness of the arc-shaped permanent magnet gradually increases from the middle to the sides (see Figure 6b ).

[0031] Preferably, the arc-shaped permanent magnet is semicircular.

[0032] Preferably, the arc-shaped permanent magnet is fixedly installed in the arc-shaped slot by interference fit or gluing.

[0033] Preferably, see Figures 1 to 7 An electric flip cover driver includes a housing 5, a motor 6, a reduction gear 7 and an output shaft 4, and also includes an angle detection device for detecting the rotation angle of the output shaft, wherein the angle detection device adopts the above-mentioned non-contact continuous angle detection device.

[0034] Application Example 1, please refer to Figure 1 As shown in FIG6 , the rotating signal disk is the final output gear 7 - 1 of the reduction gear 7 , 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] Application Example 2, please refer to Figure 7 The rotating signal disk is mounted on the power take-off shaft of the electric clamshell actuator and rotates with it. This is equivalent to the final output gear being independently installed from the rotating signal disk, but rotating synchronously with the output shaft. The split design allows the rotating signal disk and final output gear to be maintained or replaced separately, reducing maintenance difficulty and cost. Easy to upgrade and modify: As technology advances, if the angle detection device needs to be upgraded or modified, the split design makes this process simpler and faster.

[0041] Working principle of non-contact continuous angle detection device:

[0042] In modern automated and intelligent equipment, non-contact continuous angle detection devices play a vital role. In particular, their application in electric flap actuators significantly improves operational accuracy and reliability. This article details the operating principle of a non-contact continuous angle detection device.

[0043] This non-contact continuous angle detection device primarily consists of key components: a rotating signal disk, an arc-shaped permanent magnet, a Hall effect sensor, and a printed circuit board (PCB). The rotating signal disk is tightly connected to the output shaft and rotates synchronously with it. A specially designed arc-shaped slot is embedded within the end face of the rotating signal disk, housing a custom-designed arc-shaped permanent magnet. The magnetic field strength of this permanent magnet gradually increases from the ends toward the center, creating a unique magnetic field distribution.

[0044] The Hall effect sensor, a sensitive element for magnetic field changes, is cleverly mounted on a printed circuit board (PCB). This board not only houses the Hall effect sensor but also determines the rotation angle and speed of the rotating signal disk based on changes in the magnetic field. As the rotating signal disk rotates the arc-shaped permanent magnet, the magnetic field generated by the permanent magnet also changes. The Hall effect sensor senses these magnetic field changes in real time and converts them into electrical output signals.

[0045] The PCB, the core of the signal processing, further amplifies, filters, and processes the electrical signals output by the Hall effect sensors. The processed signals are accurately transmitted to the motor controller, which precisely controls the motor's rotation based on the received signals, driving the output shaft to rotate at a predetermined angle and speed.

[0046] The working state of applying the above electric flap driver to the smart toilet is that an electric flap driver is installed on the left and right sides of the toilet lid, and the maximum opening angle of the toilet lid is 90 to 120 degrees:

[0047] Closed state:

[0048] When the toilet lid is in the closed state, we can set a reference angle, such as 0 degrees. At this time, the magnetic field sensed by the Hall sensor corresponds to this reference position.

[0049] One of the electric flap actuators rotates 110 degrees clockwise:

[0050] The motor controller receives a signal from the PCB, instructing the motor to rotate the output shaft (the toilet lid's rotating axis) 110 degrees clockwise. The Hall effect sensor senses changes in the magnetic field in real time and converts these changes into electrical signals to ensure the accuracy of the rotation angle.

[0051] Another electric clamshell drive rotates 110 degrees counterclockwise:

[0052] Similarly, the motor controller receives the corresponding signal and instructs the motor to rotate 110 degrees counterclockwise. The Hall sensor is also responsible for monitoring the magnetic field changes to ensure the accuracy of the rotation angle.

[0053] Other angle controls:

[0054] In addition to 110-degree rotation, the system can also set other specific rotation angles, such as 45, 90, and 120 degrees, to meet different usage needs. For example, the user may want the toilet lid to be opened only slightly. At this time, the motor controller will receive the corresponding signal and accurately control the motor to rotate to the specified angle.

[0055] It's worth noting that the arc-shaped permanent magnet design plays a key role in improving detection accuracy and stability. Its unique design, with thickness gradually increasing from the ends to the center, creates a continuous, smooth curve for the magnetic field during rotation. This design not only improves detection sensitivity but also effectively reduces errors caused by sudden changes in the magnetic field.

[0056] Furthermore, the arc-shaped permanent magnets are fixed in place within the arc-shaped slots via an interference fit or adhesive bonding, ensuring stability and reliability during rotation. This installation method not only simplifies the assembly process but also effectively prevents the permanent magnets from loosening or falling off during rotation.

[0057] The application of this non-contact continuous angle detection device in electric clamshell actuators demonstrates its remarkable technical effectiveness. It accurately detects the output shaft's rotational angle and speed in real time, ensuring precise control of the clamshell's open and closed positions. Furthermore, its non-contact design avoids the accuracy degradation and reliability issues associated with traditional contact sensors due to wear and aging. This not only improves the equipment's operational accuracy and reliability, but also effectively extends its service life.

[0058] In summary, the electric flip-top actuator with a non-contact continuous angle detection device offers users a more intelligent, efficient, and reliable bathroom appliance experience thanks to its high precision, high stability, long life, and excellent environmental adaptability. As technology continues to develop and improve, we believe this non-contact continuous angle detection device will be widely applied and promoted in even more fields, bringing more accurate and efficient automation and intelligent solutions to various industries.

[0059] 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 continuous angle detection device, characterized in that: The angle detection device includes a rotating signal disk, an arc-shaped groove is provided on the end face of the rotating signal disk, and an arc-shaped permanent magnet with increasing and / or decreasing magnetic field strength is embedded in the arc-shaped groove; a Hall sensor responds to changes in the magnetic field of the permanent magnet, and the Hall sensor is installed on a PCB circuit board that determines the rotation angle and speed of the three-stage output gear according to the magnetic field changes. The PCB circuit board is installed on the front end cover, and the PCB circuit board is electrically connected to the motor controller.

2. The non-contact continuous angle detection device according to claim 1, characterized in that: The thickness of the arc-shaped permanent magnet gradually increases from both ends to the middle, or the thickness of the arc-shaped permanent magnet gradually increases from the middle to both sides.

3. The non-contact continuous angle detection device according to claim 1, characterized in that: The arc-shaped permanent magnet is semicircular.

4. The non-contact continuous angle detection device according to claim 1, characterized in that: The arc-shaped permanent magnet is fixedly installed in the arc-shaped slot by interference fit or gluing.

5. An electric flip cover driver, comprising a housing, a drive motor, a reduction gear, and an output shaft, and also comprising an angle detection device for detecting the rotation angle of the output shaft, characterized in that: The angle detection device adopts the non-contact continuous angle detection device described in any one of claims 1 to 4 above.

6. The electric flip-cover driver according to claim 5, 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.

7. The electric flip-cover driver according to claim 5, 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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