A self-generating control device based on permanent magnet swing

Abstract

The utility model discloses a kind of self-power generation control devices based on permanent magnet swing, applicable to remote controller, wall switch and the like scene.Its core is constituted by main body shell, magnetic conduction component, permanent magnet component, driving component, air core coil, PCB board and button, without built-in battery or external power supply.Magnetic conduction component and permanent magnet component form efficient magnetic field passage, and pressing button can drive rocker arm to drive permanent magnet component reciprocating swing, so that air core coil cuts magnetic induction line to produce induced current, power supply for PCB board and transmit control signal.The device uses symmetrical magnetic conduction structure to reduce magnetic leakage, and double torsional spring and U-shaped clamp spring ensure stable swing reset, reliable limit.The device is energy saving and environmental protection, low in use cost, compact structure, convenient to assemble and maintain, suitable for a variety of control scenes, effectively solve the power supply defects and installation limitations of traditional control device.

Description

Technical Field

[0001] This utility model belongs to the field of self-generated power control, and in particular relates to a self-generated power control device based on permanent magnet oscillation. Background Technology

[0002] In daily life and production, various control devices such as remote controls, wall switches, and passive sensors are widely used. However, the power supply methods of existing control devices have significant drawbacks: most rely on built-in batteries, which not only require users to replace them regularly, increasing operating costs, but also cause pollution to soil and water sources due to discarded batteries, which is inconsistent with environmental protection principles; some control devices use external power cords, which require pre-drilling and wiring during installation, making the construction process cumbersome and limiting the flexibility of installation due to wiring location restrictions, thus failing to meet the diverse needs of users. Therefore, designing a control device that requires no batteries or external wiring and generates its own power is key to solving the pain points of existing technologies. Utility Model Content

[0003] The purpose of this invention is to provide a self-generating power control device based on permanent magnet oscillation, aiming to solve the problems existing in the background art. To achieve this purpose, the technical solution adopted by this invention is:

[0004] A self-generating control device based on permanent magnet oscillation includes a main shell, a magnetic conductive component, a permanent magnet component, a drive component, a hollow coil, a PCB board, and buttons. The components work together to achieve self-generating and control functions.

[0005] The magnetic conductive component, as the core of the magnetic field path, includes a U-shaped iron and a main iron plate. The main iron plate is fixed in the middle of the U-shaped iron, forming a symmetrical magnetic conductive structure, which provides a stable and efficient conduction path for the magnetic field and reduces magnetic field loss. The permanent magnet component is arranged opposite to the magnetic conductive component and includes a permanent magnet and upper and lower iron plates. The upper and lower iron plates are fixedly connected to the upper and lower ends of the permanent magnet, respectively. They are made of magnetically conductive material and have an area larger than the end face area of ​​the permanent magnet, which can enhance the magnetic field concentration, reduce the leakage rate, and improve the magnetic field utilization rate.

[0006] The drive assembly is responsible for driving the permanent magnet assembly, including an up-and-down swing arm, a double torsion spring, and a U-shaped retaining ring. The up-and-down swing arm is rotatably mounted inside the main body housing. The double torsion spring is sleeved on both sides of the swing arm's rotation axis, with its two ends abutting against the main body housing and the up-and-down swing arm, respectively, providing elastic force for the swing arm to return to its original position. The U-shaped retaining ring is an elastic metal component fixed to the main body housing, with its open end abutting against the side wall of the up-and-down swing arm, enabling bidirectional limiting of the swing stroke, preventing excessive swing of the swing arm from damaging the components, and buffering the impact force during swing.

[0007] The hollow coil is wound on the outside of the main iron plate and electrically connected to the PCB board. The induced current generated by the coil cutting the magnetic field lines can be directly transmitted to the PCB board to provide power for the PCB board's signal processing and command output. The button is independently fixed on the surface of the main body shell, and its lower end corresponds to the drive end of the upper and lower swing arms. Pressing the button can directly drive the upper and lower swing arms to rotate, thereby driving the permanent magnet component to reciprocate relative to the magnetic conductive component.

[0008] Furthermore, the distance between the two ends of the U-shaped iron and the upper and lower iron plates of the permanent magnet is equal, and the distance is controlled within the range of 0.5-2mm. This distance setting can ensure the magnetic field switching efficiency and maximize the power generation effect.

[0009] Furthermore, the main body shell has a positioning groove inside, through which the magnetic conductive components and PCB board are fixedly assembled, which can precisely control the position accuracy of each component and ensure the stability of magnetic field switching; the button is fixed to the preset mounting hole on the surface of the main body shell to ensure the matching accuracy with the rocker arm drive end when pressed, and avoid drive failure or jamming.

[0010] The beneficial effects of this utility model are:

[0011] The collaborative design of "magnetic guide component + permanent magnet component + drive component + PCB board + independent button" achieves the following technical effects: Solving the power supply dependency problem: No built-in battery or external power cord is needed. The permanent magnet component is driven by mechanically pressing the button, allowing the coil to cut magnetic field lines and generate its own electricity, saving energy and reducing user costs; Improving structural flexibility and reliability: The PCB board and button are independently set up. The PCB board can focus on power reception and signal processing, while the button focuses on mechanical drive. Failure of either will not affect the other, facilitating future maintenance and replacement; Optimizing power generation and operating efficiency: The symmetrical magnetic guide structure, combined with the permanent magnet component, reduces magnetic leakage and ensures efficient magnetic field switching, meeting the instantaneous power supply needs of the PCB board; The double torsion spring and U-shaped retaining spring of the drive component ensure stable swing reset and reliable limit, extending the device's service life; Strong adaptability: The compact structure and simple assembly require no complex construction and can be flexibly installed in various control scenarios, making it widely applicable. Attached Figure Description

[0012] Figure 1 This is an overall schematic diagram of an embodiment of the present utility model;

[0013] Figure 2 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0014] Figure 3 This is an exploded view of the overall structure provided in an embodiment of the present utility model;

[0015] Figure 4 A schematic cross-sectional view of the overall structure provided for an embodiment of this utility model.

[0016] The following are the labeling elements in the figure:

[0017] 1. Main body shell;

[0018] 2. Magnetic conductive assembly; 21. U-shaped iron; 22. Main iron sheet;

[0019] 3. Permanent magnet assembly; 31. Permanent magnet; 32. Upper iron plate of permanent magnet; 33. Lower iron plate of permanent magnet;

[0020] 4. Drive assembly; 41. Upward and downward swing arm; 42. Double torsion spring; 43. U-shaped retaining ring;

[0021] 5. Air coil;

[0022] 6. PCB board;

[0023] 7. Buttons. Detailed Implementation

[0024] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element present. Conversely, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations. The terms "upper end," "lower end," "left side," "right side," "front end," "rear end," and similar expressions used herein refer to the positional relationship with reference to the accompanying drawings.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0028] like Figure 1-4 As shown, the core of this utility model lies in constructing a self-generating core collaborative system of "magnetic conductive component - permanent magnet component - drive component - coil - PCB board - button", which fundamentally realizes the mechanical self-generating function without batteries or external power supply. It is suitable for control scenarios with simple structure and basic power supply requirements (such as simple wireless switches and small remote controls).

[0029] The magnetic conductive component (2) serves as the core carrier of the magnetic field path. Both the U-shaped iron (21) and the main iron plate (22) are made of DT4 electrical pure iron material, which has high magnetic permeability and low hysteresis loss, thus maximizing the magnetic field conduction efficiency. The thickness of the U-shaped iron (21) is set to 3-5mm, and the opening width matches the height of the permanent magnet component (3) (8-12mm). The depth of the groove in the middle is 2-3mm, which is just right to match the thickness of the main iron plate (22) (2-3mm). During assembly, after the main iron plate (22) is embedded into the groove in the middle of the U-shaped iron (21), it is fixed by silver brazing. The welding temperature is controlled at 850-900℃ to ensure that the weld is full and free of pores. After welding, the overall flatness error of the magnetic conductive component is ≤0.1mm, with no deformation or warping. This design can avoid magnetic leakage due to connection gaps, making the magnetic field path more stable and laying the foundation for subsequent high-efficiency power generation.

[0030] The hollow coil (5) is made of oxygen-free copper enameled wire with a diameter of 0.1-0.15mm and is wound on the outside of the main iron sheet (22). The winding density is strictly controlled at 15-20 turns per centimeter, with a total of 100-150 turns, to ensure that sufficient induced electromotive force can be generated when the magnetic field cuts. The lead length at both ends of the coil is reserved at 8-10cm. It is insulated and wrapped with heat shrink tubing with a diameter of 1-2mm. The heat shrink temperature is 120-150℃. After wrapping, the insulation resistance of the lead is ≥100MΩ, which effectively prevents short circuit faults. The PCB board (6) is made of FR-4 epoxy fiberglass board with a thickness of 1.6mm. Signal processing chips (such as MCU microcontrollers), voltage regulator modules, wireless transmission interfaces and other components are pre-welded. After welding, the continuity needs to be tested point by point with a multimeter to ensure that there are no poor solder joints or incorrect solder joints and that the functions are complete. The coil leads are soldered to the power input terminal of the PCB board (6) using a soldering process. The soldering temperature is 260-280℃, and the tensile force of the soldering point is ≥2N to ensure stable current transmission without attenuation.

[0031] The permanent magnet (31) of the permanent magnet assembly (3) is made of N35-N42 grade neodymium iron boron permanent magnet with a remanence of 1.2-1.3T and a coercivity of ≥800kA / m, which can provide a strong and stable magnetic field. The upper iron sheet (32) and the lower iron sheet (33) of the permanent magnet are made of silicon steel sheets with a thickness of 0.5-1mm. The silicon steel sheets have low iron loss and high magnetic permeability, and the area is 10%-15% larger than the end face of the permanent magnet (31), which can further concentrate the magnetic field and reduce the leakage magnetic rate to below 5%. During assembly, epoxy resin AB glue is used to fix the upper and lower iron sheets of the permanent magnet to both ends of the permanent magnet. The glue thickness is controlled at 0.05-0.1mm to ensure that the iron sheet and the end face of the permanent magnet are completely attached, with a fitting error of ≤0.1mm and no offset or bubbles. After bonding, it needs to be cured at room temperature for 24 hours. After curing, the bonding strength is ≥5MPa. Then, the permanent magnet component (3) is snapped into the middle installation position of the upper and lower swing rocker arm (41). The snapping gap is ≤0.2mm to ensure that the permanent magnet component can move synchronously when the rocker arm swings, without relative displacement, and to ensure the continuity of magnetic field switching.

[0032] The rocker arm (41) of the drive assembly (4) is made of PA66+30% glass fiber material. This material has high strength and good wear resistance and can withstand frequent swinging without deformation. The double torsion spring (42) is made of 65Mn spring steel with a diameter of φ0.8-1.2mm, a free length of 15-20mm, and a stiffness coefficient of 1.5-2N / mm. When installed, it is sleeved on both sides of the rocker arm rotation shaft, with the two ends facing the inner wall of the main body shell (1) and the side wall of the rocker arm, respectively. In its natural state, there is no preload. When the rocker arm is pressed, it can evenly accumulate elastic potential energy. After the rocker arm is assembled on the rotating shaft seat of the main body shell (1), it needs to rotate flexibly with a rotation resistance of ≤5N. After 100,000 swing tests, there is no jamming or wear. The U-shaped retaining ring (43) is made of SUS304 stainless steel with a thickness of 0.3-0.5mm, an opening width of 8-10mm, and an elastic modulus of ≥200GPa. After being installed in the slot of the main body shell, the opening end fits tightly against the side wall of the rocker arm, and the limit stroke is controlled at 5-8mm. This can prevent the rocker arm from swinging excessively and damaging the permanent magnet component or coil, and can also buffer the impact force during swinging and extend the service life of the component.

[0033] As the basic mechanical drive component, the button (7) is made of silicone with a Shore hardness of 50-60A, which is soft and comfortable to the touch. The drive post is made of ABS engineering plastic with a diameter of 2-3mm and a length of 5-8mm. The button is fixed in the button mounting hole of the main body shell (1) by a snap-fit ​​method. The snap-fit ​​insertion and removal force is ≥3N to ensure that it is firmly fixed and does not loosen. The alignment error between the drive post at the bottom of the button and the drive end of the upper and lower swing rocker arm (41) is ≤0.3mm. When pressed, the drive post can smoothly push the rocker arm to rotate. The button feedback force is controlled at 8-12N and the pressing stroke is 3-5mm, which is precisely matched with the swing stroke of the rocker arm. After being released, the button resets itself by its own silicone elasticity. The reset time is ≤0.5s. After 100,000 press tests, the reset performance has not decayed and there is no jamming phenomenon.

[0034] In terms of working principle, when the button (7) is pressed, the button drive column applies force to the rocker arm (41) which swings up and down. The rocker arm swings down against the elastic force of the double torsion spring (42), which drives the permanent magnet assembly (3) to move. This causes the relative positions of the upper and lower iron plates (32, 33) of the permanent magnet and the two ends of the U-shaped iron (21) to change, and the magnetic field path is switched for the first time. After the button (7) is released, the button resets on its own. The double torsion spring (42) releases the accumulated elastic potential energy, which drives the rocker arm to reset upward. The permanent magnet assembly (3) moves in the opposite direction, and the magnetic field path is switched again. During the reciprocating swing of the permanent magnet assembly (3), the hollow coil (5) continuously cuts the magnetic field lines, generating an instantaneous induced current with a peak current of about 50-100mA and a peak voltage of about 3-5V. The current is transmitted to the PCB board (6) through the lead wire. The voltage regulator module on the PCB board converts the unstable induced voltage into a stable 3.3V operating voltage. At the same time, the signal processing chip recognizes the instructions triggered by the button (such as the "switch" signal) and transmits the instructions to the controlled device through the wireless transmission interface, realizing the control function without power supply.

[0035] In summary, this utility model optimizes structural division of labor and maintenance convenience by independently setting up the PCB board and buttons, while retaining the core advantage of self-generating power. It eliminates the need for batteries and external power supplies, solving the environmental and convenience issues of existing control devices; its compact structure, simple assembly, high power generation efficiency, and stable operation make it suitable for various control scenarios and have broad application prospects.

[0036] The above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, all equivalent technical solutions also fall within the scope of the present utility model. The patent protection scope of the present utility model should be defined by the claims.

Claims

1. A self-generating power control device based on permanent magnet oscillation, characterized in that: The device includes a main body shell, a magnetic conductive assembly, a permanent magnet assembly, a drive assembly, a hollow coil, a PCB board, and a button. The permanent magnet assembly and the magnetic conductive assembly are installed inside the main body shell and are arranged opposite to each other. The hollow coil is mounted on the magnetic conductive assembly. The drive assembly is rotatably connected to the front side of the main body shell. The PCB board is connected to the magnetic conductive assembly, and the button is connected to the main body shell. The magnetic conductive assembly includes a U-shaped iron and a main iron sheet. The main iron sheet is fixed in the middle of the U-shaped iron to form a symmetrical magnetic conductive structure. The distance between the two ends of the U-shaped iron and the upper and lower iron sheets of the permanent magnet is equal.

2. The self-generating power control device based on permanent magnet oscillation according to claim 1, characterized in that: The permanent magnet assembly includes a permanent magnet, an upper permanent magnet sheet, and a lower permanent magnet sheet. The upper and lower permanent magnet sheets are fixedly connected to the upper and lower ends of the permanent magnet, respectively, and are arranged opposite to the magnetic conductive assembly. The distance between the two ends of the U-shaped iron and the upper and lower permanent magnet sheets is equal.

3. The self-generating power control device based on permanent magnet oscillation according to claim 2, characterized in that: The drive assembly includes an up-and-down swing arm, a double torsion spring, and a U-shaped retaining spring. The up-and-down swing arm is rotatably mounted inside the main body housing. The double torsion spring is sleeved on both sides of the rotation axis of the up-and-down swing arm. The U-shaped retaining spring is fixed to the main body housing and is used to limit the maximum swing stroke of the swing arm. The two ends of the double torsion spring abut against the main body housing and the up-and-down swing arm, respectively, to provide elastic force for the swing arm to return to its original position.

4. The self-generating power control device based on permanent magnet oscillation according to claim 3, characterized in that: The button is fixed to the surface of the main body shell. Pressing the button can drive the up-and-down swing arm to make the permanent magnet component reciprocate relative to the magnetic conductive component, so that the hollow coil cuts the magnetic field lines to generate electrical energy.

5. The self-generating power control device based on permanent magnet oscillation according to claim 4, characterized in that: The upper and lower iron plates of the permanent magnet are made of magnetically conductive material, and their area is larger than the end face area of ​​the permanent magnet.

6. The self-generating power control device based on permanent magnet oscillation according to claim 5, characterized in that: The U-shaped retaining spring is an elastic metal component, and its open end abuts against the side wall of the up-and-down swinging arm to achieve bidirectional limitation of the swing stroke.

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