Dual magnetic spring synchronization mechanism

Abstract

The utility model relates to the technical field of precision instrument, concretely relates to a double magnetic spring synchronous mechanism, include: at least a pair of magnetic force guiding structure, each pair of magnetic force guiding structure includes two opposite setting movement part, the magnetic pole opposite arrangement between two adjacent magnetic force guiding structures, to form the closed magnetic loop between adjacent structure, at least one adjusting device, set up in one side of magnetic force guiding structure with two movement parts in magnetic force guiding structure are connected, and adjusting device is configured as, drives two movement parts to carry out the synchronous opposite or apart movement to adjust the relative distance between two movement parts, and then adjusts the negative stiffness of overall structure.

Description

Technical Field

[0001] This utility model relates to the field of precision instrument technology, and in particular to a dual magnetic spring synchronization mechanism. Background Technology

[0002] In the rapid development of modern industry and technology, the importance of precision vibration isolation and vibration control technologies is becoming increasingly prominent. Many high-precision fields, such as semiconductor manufacturing, precision optical instruments, aerospace, and biomedical engineering, are extremely sensitive to environmental vibration disturbances.

[0003] Magnetic springs are gaining attention as a novel type of vibration isolation element. They utilize magnetic force to achieve elastic support, offering advantages such as contactless operation, frictionless operation, and long lifespan. However, a single magnetic spring isolation system can only isolate vibrations through magnetic repulsion. Magnetic attraction is characterized by negative stiffness, which is unstable and cannot function as a standalone isolation system. It needs to be connected in parallel with a positive stiffness airbag or other positive stiffness components to achieve near-zero or extremely low stiffness. The advantage of parallel positive and negative stiffness is extremely low stiffness, resulting in significantly better low-frequency vibration isolation than conventional mechanisms on the market.

[0004] Negative stiffness characteristics are of great significance in vibration isolation, as they allow a system to exhibit a lower natural frequency within certain frequency ranges, thereby widening the vibration isolation bandwidth and improving the isolation effect. However, due to limitations in its structure and magnetic field characteristics, a single magnetic spring can only produce a limited range of negative stiffness. For example, in some precision instruments and equipment with extremely high vibration isolation requirements, a wide range of negative stiffness adjustment is needed to adapt to vibration isolation requirements under different operating conditions. A single magnetic spring cannot provide a sufficiently large negative stiffness adjustment capability, making it difficult to meet the precision vibration isolation requirements in practical applications.

[0005] Therefore, this application develops a dual magnetic spring synchronization mechanism to solve the problems existing in the prior art. Utility Model Content

[0006] The purpose of this invention is to provide a dual-magnetic-spring synchronization mechanism to solve the problem of insufficient adjustment range of a single-magnetic-spring in the prior art. The technical solution of this utility model is: a dual magnetic spring synchronization mechanism, comprising: At least one pair of magnetically guided structures, each pair of magnetically guided structures including two oppositely arranged movable parts, with the magnetic poles of two adjacent magnetically guided structures arranged in opposite directions, thereby forming a closed magnetic circuit between adjacent structures; At least one adjustment device is disposed on one side of the magnetic guiding structure and connected to two of the moving parts in the magnetic guiding structure. The adjustment device is configured to drive the two moving parts to move synchronously toward or away from each other in order to adjust the relative distance between the two moving parts, thereby adjusting the negative stiffness of the overall structure.

[0007] Preferably, the magnetic guiding structure further includes a fixing part, which is fixedly disposed between a pair of moving parts. The moving part is provided with a mover, and the fixing part is provided with a stator. In each magnetic guiding structure, the mover and the stator are disposed opposite to each other and generate magnetic attraction.

[0008] Preferably, both of the moving parts are made of magnetically conductive material, so that magnetic lines of force can efficiently pass through the moving parts to form a closed loop, reducing magnetic leakage and thus reducing magnetic loss.

[0009] Preferably, there are two magnetic guiding structures, and each magnetic guiding structure has an independent adjustment device on one side. The adjustment device includes an adjustment rod, and the two ends of the adjustment rod are provided with threads in opposite directions of rotation. A pair of moving parts are rotatably connected to the adjustment rod through the threads, so that the pair of moving parts can move synchronously away from each other or towards each other.

[0010] Preferably, the magnetic guiding structure is provided with one and a corresponding adjustment device is configured. A pair of guide posts are arranged parallel to each other on both sides of the magnetic guiding structure to limit the movement trajectory of the moving part and prevent unexpected deviation when the adjustment device drives the moving part to change the spacing.

[0011] Preferably, the magnetic guiding structure is provided with a scale, which is used to visualize and quantify the position or spacing changes of the moving parts, so as to achieve precise adjustment of the distance between the two moving parts.

[0012] Preferably, the fixed part and the adjusting device are connected by a plurality of flexible hinges. The flexible hinges constrain the driving force generated by the adjusting device in the moving direction of the moving part through the directional deformation of their elastic thin walls, so that the two moving parts can only perform synchronous moving towards each other or moving away from each other without swaying.

[0013] Compared with the prior art, the advantages of this utility model are: (1) The magnetic poles of adjacent magnetic guiding structures are arranged in opposite directions to form a closed magnetic circuit. The moving part is made of magnetically conductive material to provide a smooth transmission path for the magnetic lines of force, forming a complete and stable closed circuit, reducing magnetic leakage, enhancing the overall stiffness and stability of the structure, and maintaining a stable form and performance when subjected to complex external loads or disturbances. (2) Two magnetic guiding structures are set up and each is equipped with an adjustment device. The threads at both ends of the adjustment rod are opposite. Rotating the adjustment rod can make a pair of moving parts move synchronously away from each other or towards each other, ensuring that the moving parts are symmetrical and coordinated during the adjustment process, ensuring stable operation and consistent performance of the mechanism. Furthermore, the adjustment method of the adjustment rod can increase the adjustable range of the moving parts and increase the effect of negative stiffness. (3) Set a pair of guide columns to limit the movement trajectory of the moving part and prevent it from lateral swinging, tilting or other unexpected deviations during movement, so as to ensure the accuracy of movement. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram showing the positions of the adjusting device and the magnetic guiding structure in Embodiment 1 of this utility model; Figure 3 This is a front structural diagram of Embodiment 2 of the present invention; Figure 4 This is a schematic diagram of the structure on the back of Embodiment 2 of this utility model; Figure 5 This is a schematic diagram showing the positions of the adjusting device and the magnetic guiding structure in Embodiment 2 of this utility model; Figure 6 This is a schematic diagram of the magnetic lines of force of the two magnetic guiding structures described in this utility model.

[0015] The components include: 1. Magnetic guiding structure; 11. Moving part; 12. Fixed part; 13. Moving element; 14. Stator; 2. Adjusting device; 21. Adjusting rod; 3. Guide column; 4. Flexible hinge. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to specific embodiments: like Figure 1 As shown, a dual-magnetic-spring synchronization mechanism includes at least one pair of magnetically guided structures 1 and at least one adjusting device 2. Each pair of magnetically guided structures 1 includes two movable parts 11 arranged in relative positions, such as... Figure 6 As shown, in the overall layout, the magnetic poles of two adjacent magnetic guiding structures 1 are arranged in opposite ways, so that a closed magnetic circuit can be formed between the adjacent magnetic guiding structures 1.

[0017] The adjustment device 2 is located on one side of the magnetic guide structure 1, and the adjustment device 2 drives the two moving parts 11 to move synchronously towards each other or away from each other, thereby adjusting the relative distance between the two moving parts 11, and thus adjusting the negative stiffness of the entire double magnetic spring synchronization mechanism to meet the needs of actual application scenarios.

[0018] In this embodiment, the magnetic guiding structure 1 further includes a fixing part 12, which is disposed between a pair of moving parts 11 and serves as a support and positioning element. A mover 13 is disposed on the moving part 11, and a stator 14 is disposed on the fixing part 12. In each magnetic guiding structure 1, the mover 13 and the stator 14 are arranged in a relative positional relationship, and a magnetic attraction force is generated between the mover 13 and the stator 14. This effectively disperses and transmits various forces and torques generated during the movement, reduces structural vibration and deformation, and enhances the overall stiffness and stability of the structure. Even under complex external loads or interference, the magnetic guiding structure 1 can still maintain a relatively stable shape and performance, ensuring the normal operation of the dual magnetic spring synchronization mechanism and achieving stable operation of the overall structure.

[0019] Specifically, both moving parts 11 are made of magnetically conductive material, which can provide a smooth transmission path for magnetic lines of force. Since both moving parts 11 are made of magnetically conductive material, magnetic lines of force can pass through these two moving parts 11 without obstruction and efficiently, thereby forming a complete and stable closed loop between adjacent magnetic force guiding structures 1, effectively avoiding the disorderly diffusion of magnetic lines of force into the surrounding space, and greatly reducing the occurrence of magnetic leakage.

[0020] Example 1:

[0021] like Figure 1-2 As shown, two magnetic guiding structures 1 are provided. Each magnetic guiding structure 1 is equipped with an adjustment device 2 on one side. Each adjustment device 2 includes an adjustment rod 21. The two ends of the adjustment rod 21 are provided with threads in opposite directions of rotation. A pair of moving parts 11 are rotatably connected to the threads on the adjustment rod 21. When the adjustment rod 21 is rotated, since the threads at both ends are in opposite directions, the pair of moving parts 11 will be driven by opposite directions, thereby achieving synchronous separation or opposite movement. This ensures that the two moving parts 11 always maintain symmetry and coordination during the adjustment process, thereby ensuring the stable operation and consistent performance of the magnetic guiding structure 1 and the entire double magnetic spring synchronization mechanism.

[0022] Each magnetic guide structure 1 is equipped with an independent adjustment device 2. In order for the two moving parts 11 to move synchronously, the two adjustment devices 2 must be operated synchronously. Although the adjustment device 2 increases the moving distance of the moving part 11 and increases the adjustable range of negative stiffness, it also increases the difficulty of adjustment.

[0023] Example 2:

[0024] like Figures 3-5As shown, only one magnetic guiding structure 1 is provided, and a corresponding adjustment device 2 is configured. In order to avoid the moving part 11 from deviating during the movement due to the adjustment device 2, a pair of guide posts 3 are arranged in parallel on both sides of the magnetic guiding structure 1. When the adjustment device 2 is activated and drives the moving part 11 in the magnetic guiding structure 1 to change the spacing, the moving part 11 will generate relative movement under the force of the adjustment device 2. At this time, the guide posts 3 restrict the movement trajectory of the moving part 11. No matter whether the moving part 11 moves towards each other or away from each other, the guide posts 3 can ensure that it moves along the predetermined straight line direction, effectively preventing the moving part 11 from deviating unexpectedly during the movement, such as lateral swinging or tilting, thereby ensuring the accuracy and stability of the movement of the moving part 11.

[0025] In addition, a scale mark is set on the magnetic guide structure 1. When the two moving parts 11 are adjusted to change the distance between them, the change in the position or distance of the moving parts 11 can directly correspond to the scale value on the magnetic guide structure 1. By reading these scale marks, the position or distance change of the moving parts 11 can be presented in a visual and quantitative form in an intuitive and accurate manner. Then, the distance between the two moving parts 11 can be adjusted very precisely according to the scale information.

[0026] To prevent vibrations other than those in the direction of motion from occurring during the movement of the moving part 11, multiple flexible hinges 4 are used to connect the fixed part 12 and the adjusting device 2. When the adjusting device 2 is activated and generates driving force, the elastic thin wall of the flexible hinge 4 will undergo directional deformation. In other directions that may cause the moving part 11 to wobble, the amount of deformation is extremely small or even negligible. This ensures that the two moving parts 11, driven by the adjusting device 2, can only move synchronously towards or away from each other without wobble along a predetermined straight line, thereby ensuring the accuracy and stability of the mechanism's movement.

[0027] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A dual magnetic spring synchronization mechanism, characterized in that, include: At least one pair of magnetic guiding structures (1), each pair of magnetic guiding structures (1) includes two oppositely arranged moving parts (11), and the magnetic poles between two adjacent magnetic guiding structures (1) are arranged oppositely, thereby forming a closed magnetic circuit between adjacent structures; At least one adjustment device (2) is disposed on one side of the magnetic guiding structure (1) and connected to the two moving parts (11) in the magnetic guiding structure (1). The adjustment device (2) is configured to drive the two moving parts (11) to move synchronously towards each other or away from each other in order to adjust the relative distance between the two moving parts (11) and thereby adjust the negative stiffness of the overall structure.

2. The dual magnetic spring synchronization mechanism according to claim 1, characterized in that: The magnetic guiding structure (1) further includes a fixing part (12), which is fixedly disposed between a pair of moving parts (11). A moving part (13) is disposed on the moving part (11), and a stator (14) is disposed on the fixing part (12). In each magnetic guiding structure (1), the moving part (13) and the stator (14) are disposed opposite to each other and generate magnetic attraction.

3. The dual magnetic spring synchronization mechanism according to claim 2, characterized in that: Both of the moving parts (11) are made of magnetically conductive material so that magnetic lines of force can efficiently pass through the moving parts (11) to form a closed loop, reducing magnetic leakage and thus reducing magnetic loss.

4. The dual magnetic spring synchronization mechanism according to claim 2, characterized in that: Two magnetic guiding structures (1) are provided, and each magnetic guiding structure (1) has an independent adjustment device (2) on one side. The adjustment device (2) includes an adjustment rod (21). The two ends of the adjustment rod (21) are provided with threads with opposite rotation directions. A pair of moving parts (11) are rotatably connected to the adjustment rod (21) through the threads, so that the pair of moving parts (11) can move synchronously away from each other or towards each other.

5. A dual magnetic spring synchronization mechanism according to claim 2, characterized in that: A magnetic guiding structure (1) is provided and a corresponding adjustment device (2) is configured. A pair of guide posts (3) are arranged parallel to each other on both sides of the magnetic guiding structure (1) to limit the movement trajectory of the moving part (11) and prevent unexpected deviation when the adjustment device (2) drives the moving part (11) to change the spacing.

6. The dual magnetic spring synchronization mechanism according to claim 5, characterized in that: The magnetic guiding structure (1) is provided with a scale, which is used to visualize and quantify the position or spacing changes of the moving part (11) so as to achieve precise adjustment of the spacing between the two moving parts (11).

7. A dual magnetic spring synchronization mechanism according to claim 4 or 5, characterized in that: The fixed part (12) is connected to the adjustment device (2) by a plurality of flexible hinges (4). The flexible hinges (4) constrain the driving force generated by the adjustment device (2) in the moving direction of the moving part (11) by the directional deformation of their elastic thin walls, so that the two moving parts (11) can only perform synchronous opposite or opposite movements without swaying.

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