A vibration energy harvesting device based on a pulley block reverse phase drive

Abstract

The utility model provides a kind of vibration energy collection device based on pulley block reverse-phase driving, comprising: frame, frame is installed on vibration source;Magnet device, magnet device is located on frame, and is slidably connected with frame;Coil assembly, coil assembly is located on frame, and at least part of structure of coil assembly is clamped in magnet device;At least one adjusting assembly, adjusting assembly is located on frame, and is connected coil assembly and magnet device, to maintain magnet device and coil assembly on the same horizontal plane.The technical problem solved by the utility model is: in the process of device operation, due to lack of effective support and adjusting structure, when device is installed on vibration source, vibration can cause the relative position of coil and magnet device to change;Make the coupling relationship between magnetic field and electric field become unstable, easily lead to the fluctuation of the electric energy collected, it is difficult to meet the requirement of energy stable supply in actual use.

Description

Technical Field

[0001] This utility model relates to the field of energy harvesting technology, and more specifically, to a vibration energy harvesting device based on the reverse-phase drive of a pulley system. Background Technology

[0002] In the field of electromagnetic energy harvesting, with the continuous development of modern electronic devices, the demand for harvesting energy by utilizing vibration energy in the environment through the principle of electromagnetic induction is increasing.

[0003] This vibration-based energy harvesting device has broad application prospects in many fields. For example, in scenarios such as small sensor devices that need to be self-powered, the vibration energy harvesting device can obtain electrical energy by means of vibration sources in the surrounding environment, providing the necessary energy support for the operation of the device.

[0004] However, the relevant technology has at least one of the following problems: during the operation of the device, due to the lack of effective support and adjustment structure, when the device is installed on the vibration source, the vibration will cause the relative position of the coil and the magnet to change; this makes the coupling relationship between the magnetic field and the electric field unstable, which easily leads to large fluctuations in the collected electrical energy and makes it difficult to meet the requirements for stable energy supply in actual use. Utility Model Content

[0005] The technical problem solved by this utility model is that during the operation of the device, due to the lack of effective support and adjustment structure, when the device is installed on a vibration source, the vibration will cause the relative position of the coil and the magnet to change; this makes the coupling relationship between the magnetic field and the electric field unstable, which easily leads to large fluctuations in the collected electrical energy and makes it difficult to meet the requirements for stable energy supply in actual use.

[0006] To address the aforementioned problems, this utility model provides a vibration energy harvesting device based on pulley block reverse drive. The vibration energy harvesting device includes: a frame mounted on a vibration source; a magnet device disposed on the frame and slidably connected to the frame; a coil assembly disposed on the frame, with at least a portion of the coil assembly sandwiched within the magnet device; and at least one adjusting component disposed on the frame and connected to the coil assembly and the magnet device to maintain the magnet device and the coil assembly on the same horizontal plane.

[0007] Compared with existing technologies, the technical effects achieved by this solution are as follows: Unlike related technologies where vibration causes changes in the relative positions of the coil and magnet, this invention provides an adjustment component on the frame. This component connects the coil and magnet components, ensuring they remain on the same horizontal plane after external vibration. This function guarantees the stability of the relative positions of the magnet and coil during operation, stabilizing the coupling between the magnetic and electric fields and ensuring stability and continuity in the energy harvesting process. Furthermore, the sliding connection between the magnet and the frame allows the magnet to flexibly respond to the vibration of the vibration source, thereby enhancing the relative motion with the coil component. At least a portion of the coil component is sandwiched within the magnet component. This arrangement allows the coil to more fully cut magnetic field lines during vibration, effectively improving electromagnetic induction efficiency and thus enhancing the electromagnetic energy harvesting effect.

[0008] In one embodiment of this utility model, a first rotating shaft is provided on the frame; the adjustment assembly includes: an adjustment plate, one end of which is disposed on the frame and rotatably connected to the first rotating shaft; and a connecting part, which is disposed on the adjustment plate and connects the coil assembly and the magnet device.

[0009] Compared with the existing technology, the technical effects achieved by adopting this technical solution are as follows: the first rotating shaft set on the frame provides a basis for the rotation of the adjustment plate. One end of the adjustment plate is rotatably connected to the first rotating shaft, so that the adjustment plate can rotate flexibly around the rotating shaft to adjust the relative position of the coil assembly and the magnet assembly. The connecting part is set on the adjustment plate, which can stably connect the coil assembly and the magnet device, ensuring that the anti-phase motion of the two during vibration is more balanced, and further stabilizing the electromagnetic coupling effect.

[0010] In one embodiment of this utility model, the end of the adjusting plate away from the first rotating shaft is provided with a connecting hole; the connecting part includes: a pulley, which is disposed in the connecting hole and rotatably connected to the adjusting plate; a connecting rope, which is disposed on the pulley; the connecting rope connects the coil assembly and the magnet device.

[0011] Compared with existing technologies, the technical effects achieved by this solution are as follows: the connecting rope is guided by pulleys, causing the magnet device and the coil assembly to move in opposite phases during vibration, which can double the relative speed at which the coil cuts magnetic field lines and enhance electromagnetic induction efficiency; in addition, the pulleys reduce the frictional loss of the connecting rope, making the vibration energy more efficiently converted into electromagnetic energy, thus improving mechanical efficiency.

[0012] In one embodiment of this utility model, the pulley and the adjusting plate cooperate to form a fixed pulley.

[0013] Compared with existing technologies, the technical effects achieved by this solution are as follows: the fixed pulley fixes the rope path, ensuring that the opposite motion trajectories of the magnet device and the coil assembly are strictly symmetrical, thus avoiding a decrease in coupling efficiency caused by motion deviation.

[0014] In one embodiment of this utility model, the adjusting plate is provided with a connecting groove; the frame is also provided with a locking member corresponding to the connecting groove; wherein, when the adjusting plate rotates in the first direction, the adjusting plate is fixed by the locking member to change the tension of the connecting rope.

[0015] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: by adjusting the length of the connecting rope by rotating the adjustment plate, the tension can be adjusted to adapt to vibration sources of different frequencies; and the tension can be dynamically adjusted according to the actual vibration intensity to avoid motion lag due to excessively loose tension or mechanical damage due to excessively tight tension.

[0016] In one embodiment of this utility model, a first slide rail is provided on the frame; the magnet device includes: a magnetic component, which is slidably connected to the first slide rail; and an elastic component, which is disposed on one side of the magnetic component and connected to the frame, for transmitting vibration to the magnetic component.

[0017] Compared with existing technologies, the technical effects achieved by this technical solution are as follows: the first slide rail restricts the movement trajectory of the magnetic component to a straight line, avoiding lateral deviation during vibration, ensuring that the relative positions of the magnet and the coil assembly are always aligned, and maintaining electromagnetic coupling accuracy; the elastic component connects the magnetic component and the frame, which can amplify the amplitude of the vibration source, while efficiently transferring vibration energy to the magnetic component, increasing the magnet's movement speed, and enhancing the electromagnetic induction intensity.

[0018] In one embodiment of this utility model, the magnetic component includes: a housing, one end of which is slidably connected to a first slide rail and the other end of which is connected to a connecting rope; an elastic component located on the side of the housing near the frame; a receiving groove located on the side of the housing away from the first slide rail; and placement positions are provided on both sides of the receiving groove; a magnet located in the placement position; and at least a portion of the structure of the coil assembly located in the receiving groove.

[0019] Compared with existing technologies, the technical effects achieved by this solution are as follows: the magnets on both sides of the receiving slot form a symmetrical magnetic field, and when the coil assembly cuts the magnetic field lines in the slot, the change in magnetic flux is more uniform, and the stability of the induced electromotive force is improved; the housing is connected to the slide rail, and the receiving slot integrates the magnet and coil assembly, reducing the size of the device and making it suitable for lightweight scenarios.

[0020] In one embodiment of this utility model, the frame is further provided with a second slide rail, which is arranged relative to the first slide rail; the coil assembly includes: a connecting seat, which is disposed on the second slide rail and connected to a connecting rope; and an induction coil, which is disposed on the side of the connecting seat near the first slide rail and located in a receiving groove.

[0021] Compared with existing technologies, the technical effects achieved by this technical solution are as follows: the first and second slide rails are set in parallel to ensure that the magnet device and the coil assembly strictly reciprocate in a straight line when moving in opposite phases, avoiding magnetic field coupling failure caused by lateral swaying; the connecting seat is linked to the magnet device through the connecting rope, and the double slide rail support improves the synchronization of their opposite phase movements, further enhancing the efficiency of the induction coil in cutting magnetic field lines.

[0022] In one embodiment of this utility model, there are two adjustment components, which are arranged along the length of the frame.

[0023] Compared with existing technologies, the technical effects achieved by this technical solution are as follows: the two adjustment components are symmetrically distributed, making the tension distribution of the connecting rope more uniform, avoiding the off-center load problem caused by a single adjustment component, and improving the overall motion stability of the device; in addition, the two adjustment components can be redundant to each other, so even if one device fails, the other can still maintain the basic reverse motion function, reducing the probability of failure.

[0024] In one embodiment of this utility model, there are multiple placement positions, which are arranged along the height direction of the shell.

[0025] Compared with the existing technology, the technical effect achieved by adopting this technical solution is as follows: multiple placement positions are set along the height direction of the shell, and each placement position is equipped with a magnet. This allows the magnets to overlap, which can significantly increase the magnetic induction intensity of the induction coil cutting area and generate a larger induced electromotive force when the induction coil moves.

[0026] By adopting the technical solution of this utility model, the following technical effects can be achieved:

[0027] (1) The present invention provides an adjustment component on the frame, and the coil component and the magnet component are connected by the adjustment component so that the magnet device and the coil component remain on the same horizontal plane after being subjected to external vibration; this function ensures that the relative position of the magnet device and the coil device is stable during the operation of the vibration energy harvesting device, so that the coupling relationship between the magnetic field and the electric field is stable, ensuring the stability and continuity of the energy harvesting process; in addition, the magnet device is slidably connected to the frame, so that the magnet device can flexibly respond to the vibration of the vibration source, thereby enhancing the relative movement with the coil component; at least part of the structure of the coil component is sandwiched in the magnet device. This layout allows the coil to cut the magnetic field lines more fully during the vibration process, effectively improving the electromagnetic induction efficiency, thereby improving the electromagnetic energy harvesting effect;

[0028] (2) This utility model uses a fixed pulley to fix the rope path, ensuring that the opposite motion trajectories of the magnet device and the coil assembly are strictly symmetrical, and avoiding the decrease in coupling efficiency caused by motion deviation;

[0029] (3) The present invention adopts two symmetrically distributed adjustment components to make the tension distribution of the connecting rope more uniform, avoid the problem of unbalanced load caused by a single adjustment component, and improve the overall motion stability of the device; in addition, the two adjustment components can be redundant to each other, so even if one device fails, the other can still maintain the basic reverse motion function, reducing the probability of failure. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 A schematic diagram of the structure of a vibration energy harvesting device based on pulley block reverse drive provided for an embodiment of this utility model;

[0032] Figure 2 for Figure 1 A front view of the vibration energy harvesting device shown in the figure;

[0033] Figure 3 for Figure 1 Top view of the vibration energy harvesting device shown;

[0034] Figure 4 for Figure 3 A cross-sectional view along the AA direction;

[0035] Figure 5 for Figure 2 A schematic diagram of the adjusting plate shown in the figure;

[0036] Figure 6 for Figure 3 The diagram shows the structure of the shell.

[0037] Explanation of reference numerals in the attached figures:

[0038] 100. Vibration energy harvesting device; 10. Frame; 11. First slide rail; 12. Second slide rail; 13. First horizontal plane; 14. First rotating shaft; 15. Locking element; 20. Magnet device; 21. Magnetic element; 211. Housing; 212. Receiving groove; 213. First magnet; 214. Second magnet; 215. Placement position; 22. Elastic element; 30. Coil assembly; 31. Connecting seat; 32. Induction coil; 40. Adjustment assembly; 41. Adjustment plate; 411. Connecting hole; 412. Connecting groove; 42. Connecting part; 421. Pulley; 422. Connecting rope. Detailed Implementation

[0039] The embodiments of this utility model will now be described in detail. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0042] See Figure 1 , Figure 1 A schematic diagram of a vibration energy harvesting device based on vibration is provided for an embodiment of this utility model; combined with Figures 2 to 6 A vibration-based vibration energy harvesting device 100 is mounted on a vibration source. The vibration energy harvesting device 100 includes: a frame 10, a magnet device 20, a coil assembly 30, and at least one adjusting component 40. The frame 10 is mounted on the vibration source. The magnet device 20 is disposed on the frame 10 and slidably connected to the frame 10. The coil assembly 30 is disposed on the frame 10, and at least a portion of the structure of the coil assembly 30 is sandwiched within the magnet device 20. The adjusting component 40 is disposed on the frame 10 and connects the coil assembly 30 and the magnet device 20 to maintain the magnet device 20 and the coil assembly 30 on the same horizontal plane.

[0043] Preferably, the magnet device 20 and the coil assembly 30 are located on the first horizontal plane 13.

[0044] Please refer to the following information based on actual usage. Figure 2When the vibration energy harvesting device 100 is installed on the vibration source, the vibration is transmitted along the frame 10 to the magnet device 20, and the magnet device 20 moves up and down relative to the frame 10. When the magnet device 20 moves upward relative to the first horizontal plane 13, the coil assembly 30 moves downward under the action of the adjusting component 40. When the magnet device 20 moves to the highest point, it will move downward relative to the frame 10 to the vicinity of the first horizontal plane 13 under the action of gravity and vibration, and then continue to move downward below the first horizontal plane 13. Meanwhile, the coil assembly 30 moves upward relative to the frame 10 to the vicinity of the first horizontal plane 13 under the action of the adjusting component 40, and then continues to move upward above the first horizontal plane 13. That is, the coil assembly 30 and the moving component complete one phase-reversed movement. At this time, the coil assembly 30 and the magnet device 20 cooperate to complete the movement of cutting magnetic field lines. Since the vibration is continuous, after the previous stage of movement ends, the magnet assembly and the coil assembly 30 continue to complete the phase-reversed movement through the adjusting component 40 until the vibration disappears.

[0045] For further information, please refer to [link / reference]. Figure 2 The frame 10 is provided with a first rotating shaft 14; the adjustment assembly 40 includes an adjustment plate 41 and a connecting part 42; wherein, one end of the adjustment plate 41 is provided on the frame 10 and is rotatably connected to the first rotating shaft 14; the connecting part 42 is provided on the adjustment plate 41 and connects the coil assembly 30 and the magnet device 20.

[0046] Furthermore, the end of the adjusting plate 41 away from the first rotating shaft 14 is provided with a connecting hole 411; the connecting part 42 includes: a pulley 421 and a connecting rope 422, wherein the pulley 421 is disposed in the connecting hole 411 and is rotatably connected to the adjusting plate 41; the connecting rope 422 is disposed on the pulley 421; the connecting rope 422 connects the coil assembly 30 and the magnet device 20.

[0047] Furthermore, pulley 421 and adjusting plate 41 cooperate to form fixed pulley 421.

[0048] Preferably, the connecting rope 422 is connected to the coil assembly 30 and the magnet device 20 via a hexagonal bolt with a hole at the head.

[0049] Specifically, the adjusting component 40 connects the magnet device 20 and the coil assembly 30 via a connecting rope 422, which is connected to a pulley 421 mounted on the adjusting plate 41. At this time, the pulley 421, the adjusting plate 41, and the connecting rope 422 form a pulley 421 group. When the magnet device 20 is vibrated and moves upward toward the first horizontal plane 13, the coil assembly 30 moves downward toward the first horizontal plane 13 under the action of gravity. Under the action of the pulley 421 group, the movement lengths of the magnet device 20 and the coil assembly 30 are equal.

[0050] To further explain the above content using principles of physics, in vibration-based energy harvesting, according to Faraday's law of electromagnetic induction, the relative velocity of the coil cutting magnetic field lines directly determines the magnitude of the induced electromotive force. This invention connects the magnet device 20 and the coil assembly 30 via a pulley group 421, achieving an anti-phase motion mechanism that doubles the relative velocity. Specifically, the pulley 421 and connecting rope 422 connect the magnet device 20 and the coil assembly 30, creating an anti-phase motion relationship: when the magnet device 20 moves upward, the coil assembly 30 is pulled downward via the connecting rope 422, at which point both move away from the first horizontal plane 13. Assuming the vibration source drives the magnet device 20 to move upward at velocity V, the rope, guided by the pulley 421, drives the coil assembly 30 to move downward at velocity V. At this time, the velocity of the coil assembly 30 relative to the magnet device 20 is the sum of their velocities, i.e.:

[0051] V 相对 =V 磁铁装置向上 +V 线圈组件向下 =V+V=2V;

[0052] Therefore, the relative speed is increased to twice the speed, and the induced electromotive force is also increased to twice the speed. In addition, in terms of energy conversion, since power is proportional to the square of speed, the reverse motion enables the theoretical energy conversion scheme to be four times higher than the traditional same-direction motion scheme. The specific derivation will not be explained in detail.

[0053] The function of the fixed pulley 421 is further explained here. The fixed pulley 421 changes the direction of the tension in the connecting rope 422, causing the magnet device 20 and the coil assembly 30 to produce opposite-phase motions under the same vibration source. For example, when the vibration source pushes the magnet device 20 upward, the rope passes around the pulley 421, transmitting the tension to the coil assembly 30, causing it to move downward; the low-friction characteristics of the pulley 421 reduce energy loss, ensuring that vibrational energy is effectively converted into relative motion.

[0054] For further information, please refer to [link / reference]. Figure 2 and Figure 5 The adjusting plate 41 is provided with a connecting groove 412; the frame 10 is also provided with a locking member 15 corresponding to the connecting groove 412; wherein, when the adjusting plate 41 rotates in the first direction, the adjusting plate 41 is fixed by the locking member 15 to change the tension of the connecting rope 422.

[0055] Specifically, when the frequency of the vibration source changes, the effective length of the connecting rope 422 is changed by rotating the adjusting plate 41 around the first rotating shaft 14 in the first direction, thereby adjusting the tension of the connecting rope 422. Therefore, when the adjusting plate 41 rotates in the first direction, the connecting rope 422 is tightened. The tension of the connecting rope 422 can ensure that the movement of the coil assembly 30 and the magnet device 20 is strictly synchronized, avoiding the decrease in efficiency of cutting magnetic field lines caused by phase difference.

[0056] Preferably, the first direction is clockwise.

[0057] For further information, please refer to [link / reference]. Figure 3 , Figure 4 and Figure 6 The frame 10 is provided with a first slide rail 11; the magnet device 20 includes a magnetic element 21 and an elastic element 22; wherein the magnetic element 21 is slidably connected to the first slide rail 11; the elastic element 22 is provided on one side of the magnetic element 21 and is connected to the frame 10, and is used to transmit vibration to the magnetic element 21.

[0058] Preferably, the first slide rail 11 extends along the height direction of the frame 10.

[0059] Specifically, the magnetic component 21 is mounted on the first slide rail 11 of the frame 10. This restricts the movement of the magnetic component 21 to the first slide rail 11 after receiving vibrations transmitted from the elastic component 22. In other words, the movement trajectory of the magnetic component 21 is restricted to a straight line in the height direction of the frame 10, preventing lateral deviation during vibration and ensuring that the relative position of the magnetic component and the coil assembly 30 remains accurate, thus maintaining electromagnetic coupling accuracy. Furthermore, the elastic component 22 connects the magnetic component 21 to the frame 10, which can amplify the amplitude of the vibration source and efficiently transmit vibration energy to the magnetic component 21 to enhance electromagnetic induction intensity.

[0060] For further information, please refer to [link / reference]. Figure 3 , Figure 4 and Figure 6 The magnetic component 21 includes a housing 211, a receiving groove 212, and a magnet. One end of the housing 211 is slidably connected to the first slide rail 11, and the other end is connected to the connecting rope 422. The elastic component 22 is located on the side of the housing 211 near the frame 10. The receiving groove 212 is located on the side of the housing 211 away from the first slide rail 11. Placement positions 215 are provided on both sides of the receiving groove 212. The magnet is placed in the placement position 215. At least a portion of the structure of the coil assembly 30 is located in the receiving groove 212.

[0061] Furthermore, there are multiple placement positions 215, which are arranged along the height direction of the housing 211.

[0062] Preferably, two placement positions 215 are provided on both sides of the receiving groove 212; the two placement positions 215 provided on the same side are arranged along the height direction of the shell 211.

[0063] Preferably, each of the placement positions 215 is provided with a magnet.

[0064] For further information, please refer to [link / reference]. Figure 3 , Figure 4 and Figure 6 The frame 10 is also provided with a second slide rail 12, which is arranged relative to the first slide rail 11; the coil assembly 30 includes a connecting seat 31 and an induction coil 32; wherein the connecting seat 31 is disposed on the second slide rail 12; and the connecting seat 31 is connected to the connecting rope 422; the induction coil 32 is disposed on the side of the connecting seat 31 near the first slide rail 11 and is located in the receiving groove 212.

[0065] In one example, please refer to Figure 3 The receiving groove 212 is provided with a first magnet 213 and a second magnet 214 on both sides to form a symmetrical and uniform strong magnetic field region. Compared with the combination of induction coil 32 and a single magnet, the magnetic flux density of induction coil 32 sandwiched between the first magnet 213 and the second magnet 214 is greater than the magnetic flux density of induction coil 32 and a single magnet. Furthermore, the arrangement of the two magnets makes the magnetic field gradient distribution more uniform, and the rate of change of magnetic flux when induction coil 32 cuts magnetic field lines is more stable, which can reduce the fluctuation of induced electromotive force.

[0066] Furthermore, the dual magnets balance the attraction or repulsion forces on the coil, preventing the induction coil 32 from shifting due to the unilateral magnetic force of a single magnet, and ensuring that the induction coil 32 is always located in the region of strongest magnetic field. The symmetrical arrangement of the dual magnets and the induction coil 32 ensures that the magnet device 20 and the coil assembly 30 are subjected to uniform force during opposite-phase movement. Combined with the dual slide rail guide, the movement trajectory of the magnet device 20 and the coil assembly 30 is more precise, avoiding movement jamming or deviation caused by uneven force.

[0067] In another example, please refer to Figure 4 and Figure 6 When two placement positions 215 are provided on both sides of the receiving groove 212, and the two placement positions 215 on the same side are arranged along the height direction of the housing 211, in the vibration-based electromagnetic energy harvesting process, the vibration source drives the frame 10 to move, and the magnet module and the coil assembly 30 form an anti-phase motion with the help of the adjustment component 40; the double magnets stacked on top of each other can make full use of the superimposed magnetic field or gradient magnetic field when the induction coil 32 shuttles back and forth between the two magnets. Whether it is to increase the electromotive force of a single cut or to ensure the stability of continuous cutting, it is more advantageous than a single magnet in the same direction or a double magnet arranged in a dispersed manner.

[0068] Preferably, there are two adjustment components 40, which are arranged along the length of the frame 10.

[0069] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A vibration energy harvesting device based on pulley block reverse drive, characterized in that, include: A frame (10) is mounted on a vibration source; A magnet device (20) is disposed on the frame (10) and slidably connected to the frame (10); A coil assembly (30) is disposed on the frame (10), and at least a portion of the structure of the coil assembly (30) is sandwiched in the magnet device (20); At least one adjustment component (40) is disposed on the frame (10) and connected to the coil assembly (30) and the magnet device (20) to maintain the magnet device (20) and the coil assembly (30) on the same horizontal plane.

2. The vibration energy harvesting device according to claim 1, characterized in that, The frame (10) is provided with a first rotating shaft (14); The adjustment component (40) includes: Adjustment plate (41), one end of which is disposed on the frame (10) and rotatably connected to the first rotating shaft (14); A connecting part (42) is provided on the adjusting plate (41) and connects the coil assembly (30) and the magnet device (20).

3. The vibration energy harvesting device according to claim 2, characterized in that, The adjusting plate (41) has a connecting hole (411) at one end away from the first rotating shaft (14). The connecting part (42) includes: A pulley (421) is provided in a connecting hole (411) and is rotatably connected to the adjusting plate (41); A connecting rope (422) is provided on the pulley (421); the connecting rope (422) connects the coil assembly (30) and the magnet device (20).

4. The vibration energy harvesting device according to claim 3, characterized in that, The pulley (421) and the adjusting plate (41) cooperate to form a fixed pulley (421).

5. The vibration energy harvesting device according to claim 3, characterized in that, The adjusting plate (41) is provided with a connecting groove (412); The frame (10) is also provided with a locking element (15) corresponding to the connecting groove (412); When the adjusting plate (41) rotates in the first direction, the adjusting plate (41) is fixed by the locking member (15) to change the tension of the connecting rope (422).

6. The vibration energy harvesting device according to any one of claims 3 to 5, characterized in that, The frame (10) is provided with a first slide rail (11); The magnet device (20) includes: A magnetic component (21) is slidably connected to the first slide rail (11); An elastic element (22) is disposed on one side of the magnetic element (21) and connected to the frame (10) for transmitting vibration to the magnetic element (21).

7. The vibration energy harvesting device according to claim 6, characterized in that, The magnetic component (21) includes: The housing (211) has one end slidably connected to the first slide rail (11) and the other end connected to the connecting rope (422); the elastic element (22) is located on the side of the housing (211) near the frame (10); The receiving groove (212) is located on the side of the housing (211) away from the first slide rail (11); and the receiving groove (212) has placement positions (215) on both sides. A magnet, wherein the magnet is disposed in the placement position (215); At least a portion of the structure of the coil assembly (30) is disposed in the receiving groove (212).

8. The vibration energy harvesting device according to claim 7, characterized in that, The frame (10) is also provided with a second slide rail (12), which is arranged relative to the first slide rail (11); The coil assembly (30) includes: A connecting seat (31) is provided on the second slide rail (12); and the connecting seat (31) is connected to the connecting rope (422); An induction coil (32) is disposed on the side of the connecting seat (31) near the first slide rail (11) and located in the receiving groove (212).

9. The vibration energy harvesting device according to any one of claims 1 to 5, characterized in that, There are two adjustment components (40), and the two adjustment components (40) are arranged along the length direction of the frame (10).

10. The vibration energy harvesting device according to claim 7, characterized in that, There are multiple placement positions (215), which are arranged along the height direction of the housing (211).

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