Magnetic Spring and Manufacturing Method

Abstract

The present application discloses a magnetic spring and a manufacturing method thereof. The magnetic spring includes: a hollow shaft tube, an end connection assembly, a filling body, a magnetic assembly, and a working piece. Among them, the end connection assembly is arranged at the corresponding ports of the hollow shaft tube to form an installation cavity; the filling body is arranged inside the hollow shaft tube; the magnetic assembly at least includes a first magnetic piece, a second magnetic piece, a third magnetic piece, and a fourth magnetic piece. The magnetic assembly is arranged in the installation cavity. The corresponding surfaces of the second magnetic piece and the third magnetic piece along the axial direction of the hollow shaft tube are bonded and magnetically repulsive, and the corresponding surfaces of the fourth magnetic piece and the first magnetic piece along the axial direction of the hollow shaft tube are bonded and magnetically repulsive. The surfaces of the second magnetic piece and the third magnetic piece perpendicular to the axial direction of the hollow shaft tube can be magnetically attracted to the corresponding surfaces of the fourth magnetic piece and the first magnetic piece; the working piece is movably arranged on the hollow shaft tube along the axial direction of the hollow shaft tube, and there is a magnetic interaction between the working piece and the magnetic piece. The magnetic spring provided by the present application has the advantages of high structural strength, long stroke, etc.

Description

Technical Field

[0001] This application relates to the technical field of magnetic springs, and particularly to a magnetic spring and a manufacturing method thereof. Background Art

[0002] With the continuous progress of precision machinery and automation technology, magnetic springs, as a new type of elastic element, have been widely used in application scenarios such as precision positioning, vibration isolation, and force transmission. However, limited by factors such as processing accuracy and material properties, traditional magnetic springs and their internal magnetic steel / permanent magnets often have problems of insufficient structural strength, limited volume or length of the magnetic steel / permanent magnet, and thus limited stroke of the magnetic spring. For long-stroke magnetic springs, on the one hand, the magnetization process cost of the long magnetic steel / permanent magnet used is high, and on the other hand, due to the insufficient structural strength of the long magnetic steel / permanent magnet, in industrial environments such as extreme temperature and pressure, long-term use, shock and vibration, it is easy to cause equipment performance degradation, shortened service life, etc., and even lead to safety accidents. Therefore, how to improve the structural strength through the structural improvement and process improvement of the magnetic spring, so as to ensure the reliable stability of the long-stroke magnetic spring in actual application and long-term use, has become an urgent problem to be solved. Summary of the Invention

[0003] In view of this, this application proposes a magnetic spring and a manufacturing method thereof. The magnetic spring has the advantages of being reliable and durable, having high structural strength, having a relatively long stroke and being extensible.

[0004] In a first aspect, this application proposes a magnetic spring, comprising:

[0005] A hollow shaft tube, the hollow shaft tube is axially provided with a first port and a second port;

[0006] An end connection assembly, the end connection assembly includes a first joint and a second joint, the first joint is installed at the first port, the second joint is installed at the second port, and the first joint, the second joint and the hollow shaft tube can cooperate to form an installation cavity;

[0007] A filling body, the filling body includes a first filling body, and the first filling body is arranged inside the hollow shaft tube and is close to the first port;

[0008] A magnetic component, the magnetic component at least comprising a first magnetic component, a second magnetic component, a third magnetic component and a fourth magnetic component, the magnetic component being arranged in the mounting cavity, the second magnetic component and the third magnetic component being bonded to corresponding surfaces along the axial direction of the hollow shaft tube and magnetically repelling each other, the fourth magnetic component and the first magnetic component being bonded to corresponding surfaces along the axial direction of the hollow shaft tube and magnetically repelling each other, and the surfaces of the second magnetic component and the third magnetic component perpendicular to the axial direction of the hollow shaft tube being able to magnetically attract the corresponding surfaces of the fourth magnetic component and the first magnetic component;

[0009] A working piece is arranged on the hollow shaft tube, wherein the working piece is movable along the axial direction of the hollow shaft tube, and the working piece can generate magnetic interaction with the magnetic component.

[0010] In a second aspect, the present application provides a method for manufacturing a magnetic spring, which is used to prepare the magnetic spring in any embodiment of the present application, comprising:

[0011] Installing a connector in the terminal assembly to a corresponding port of the hollow shaft tube;

[0012] The magnetic component is arranged in the hollow shaft tube, and after the hollow shaft tube is provided with the magnetic component, at least one installation cavity can be formed;

[0013] placing the filling body in the installation cavity;

[0014] Install another connector in the terminal assembly to the corresponding port of the hollow shaft tube.

[0015] The magnetic spring and manufacturing method proposed in the present application can effectively increase the total length of the magnetic assembly while ensuring the structural strength through the combined layout of multiple magnetic parts in the magnetic assembly, overcoming the problem that the traditional magnetic spring relies on one-piece molded magnetic steel and is limited by the physical limitations of the material and the limited structural strength, and cannot further extend the stroke of the magnetic spring. The filler body is cleverly used in the magnetic spring product and the manufacturing method. While effectively preventing the magnetic assembly from shifting inside the hollow shaft tube, it can also play a role in tightening the internal bonding structure strength of the magnetic assembly through the process, thereby further enhancing the durability and reliability of the magnetic spring.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0018] Figure 1 Structural schematic diagram of the magnetic spring from the first perspective in an embodiment of the present application;

[0019] Figure 2 Explosion diagram of the magnetic spring in an embodiment of the present application;

[0020] Figure 3 Cross-sectional structural schematic diagram of the magnetic spring in an embodiment of the present application;

[0021] Figure 4 Partial component structural schematic diagram of the magnetic spring in an embodiment of the present application;

[0022] Figure 5 Structural schematic diagram of the magnetic component in an embodiment of the present application;

[0023] Figure 6 Schematic flow chart of the steps of the manufacturing method for producing the magnetic spring in an embodiment of the present application;

[0024] Figure 7 Cross-sectional structural schematic diagram of the magnetic spring in an embodiment of the present application.

[0025] Explanation of reference numerals:

[0026] 100, magnetic spring; 11, hollow shaft tube; 11a, first port; 11b, second port; 11c, installation cavity; 12, end connection component; 12a, first joint; 12b, second joint; 12c, installation hole; 13, magnetic component; 13a, first magnetic part; 13b, second magnetic part; 13c, third magnetic part; 13d, fourth magnetic part; 13f, connection surface; 14, working part; 15, filling body; 15a, first filling body; 15b, second filling body; 16, riveting groove; 17, riveting part.

[0027] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0029] The flowcharts shown in the accompanying drawings are only illustrative examples, and do not necessarily include all the contents and operations / steps, nor do they necessarily need to be executed in the described order. For example, some operations / steps can also be decomposed, combined, or partially merged. Therefore, the actual execution order may change according to the actual situation.

[0030] It should also be understood that the terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application.

[0031] It should be understood that all the directional indications (such as up, down, left, right, front, rear...) in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0032] It should also be understood that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as "connected to" another element, it can be directly connected to the other element or can also be indirectly connected to the other element through an intermediate element.

[0033] The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. For example, the descriptions involving "first", "second", etc. in the present application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0034] It should also be further understood that the term "and / or" used in the specification and appended claims of the present application refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0035] With the rapid development of high-tech industries such as batteries, photovoltaics, and semiconductors, motor modules are widely adopted by production lines in various industries to improve production automation, ensure production efficiency and process quality. However, for production lines with high requirements for the accuracy and stability of processes such as machining and assembly, the buffer mechanisms such as mechanical springs used in traditional motor modules may tend to have problems such as fatigue and elastic attenuation during long-term use. The magnetic spring does not rely on mechanical contact and spring expansion and contraction to generate elastic force, so it has better reliability and durability. It can output stable, reliable, and easy-to-control buffer force as part of the buffer mechanism while effectively protecting the mechanical structure and components of the motor module.

[0036] With the industrial upgrading of manufacturing industries such as aerospace, ship power, and construction machinery, traditional automation equipment also puts forward higher requirements for the range and load capacity of its motor modules and buffer mechanisms. However, due to the physical limitations of permanent magnets such as integral magnetic steel inside the magnetic spring and limited structural strength, when increasing the total stroke of the magnetic spring, it is easy to cause the reduction of the mechanical structure strength of the permanent magnet itself, thereby reducing the load capacity of the magnetic spring and affecting the reliability and durability of the buffer mechanism and even the overall motor module. Moreover, the process difficulty and cost of manufacturing this permanent magnet will be increased. How to effectively improve the range, load capacity, and reliability of the magnetic spring by improving manufacturing methods, improving structural design, etc. has become a problem that needs to be solved.

[0037] After extending the length of the magnetic steel and permanent magnet inside the magnetic spring, problems such as low adhesive bonding strength in the manufacturing process or structural design of the traditional magnetic spring will be exposed due to the change of the internal structure and the improvement of strength requirements. Therefore, in industrial environments such as extreme temperature and pressure, long-term use, and shock and vibration, how to improve its structural strength through structural improvement and process improvement to ensure the reliable stability of the long-stroke magnetic spring during actual application and long-term use has become an urgent problem to be solved.

[0038] In particular, traditional magnetic springs often directly bond the end connection components to the corresponding ports of the hollow shaft tube of the magnetic spring. Once the bonding points are affected by factors such as physical weathering and chemical corrosion, problems such as loosening of the connection part will occur, which will easily lead to situations such as reduced stability and insufficient durability in scenarios such as long-term use and extreme loads, and even cause negative consequences such as debonding and loosening of the end connection components, reducing production efficiency and affecting safety production.

[0039] Please refer toFigures 1 to 4 , such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an embodiment of the present application provides a magnetic spring 100. Among them, the magnetic spring 100 may include a hollow shaft tube 11, an end connection assembly 12, a magnetic assembly 13, and a working piece 14. Among them, the hollow shaft tube 11 may be axially provided with a first port 11a and a second port 11b. The end connection assembly 12 may include a first joint 12a and a second joint 12b. The first joint 12a is press-ring riveted to the first port 11a, and the second joint 12b is press-ring riveted to the second port 11b. The first joint 12a, the second joint 12b, and the hollow shaft tube 11 can cooperate to form an installation cavity 11c.

[0040] The magnetic assembly 13 may be disposed in the installation cavity 11c, and the magnetic assembly 13 may include a plurality of magnetic members.

[0041] Exemplarily, the first joint 12a is installed at the first port 11a by press-ring riveting, adhesive connection, or a combination of both. Alternatively, the second joint 12b is installed at the second port 11b by press-ring riveting, adhesive connection, or a combination of both.

[0042] It can be understood that the press-ring riveting connection method, as a physical connection, is more reliable and durable than traditional adhesives, saves material and process costs, and can indirectly facilitate the installation of the hollow shaft tube 11 without additionally setting connection components such as external threads and buckles at the ends, saving material and process costs.

[0043] It can be further understood that the riveting portion 17 on the hollow shaft tube 11 can be used as an installation portion to facilitate the installation of the magnetic spring 100 and the assembly of related mechanisms, devices, and equipment applied to the magnetic spring 100. For example, the riveting portion 17 can be used as an installation portion to connect to a load, a base, and / or a limiting member.

[0044] The working piece 14 may be disposed on the hollow shaft tube 11. Among them, the working piece 14 is axially movable along the hollow shaft tube 11. An installation portion is provided on the working piece 14, and the installation portion can be used to connect to a load, a fixed seat, and / or a limiting member. The working piece 14 can generate a magnetic interaction with the magnetic member.

[0045] In some embodiments, the magnetic spring 100 may include a hollow shaft tube 11, an end connection assembly 12, a magnetic assembly 13, a working piece 14, and a filling body 15. Among them, the hollow shaft tube 11 may be axially provided with a first port 11a and a second port 11b.

[0046] In some embodiments, external threads may also be provided at the first port 11a and / or the second port 11b formed along the axial direction of the hollow shaft tube 11 for connecting to the fixed seat or the load.

[0047] It can be understood that the hollow shaft tube 11 may also be provided with other ports to facilitate the electrical, hydraulic or pneumatic connection between the internal components of the hollow shaft tube 11 and external devices.

[0048] Among them, the terminal assembly 12 may include a first joint 12a and a second joint 12b.

[0049] Exemplarily, the first joint 12a may be installed at the first port 11a, the second joint 12b may be installed at the second port 11b, and the first joint 12a, the second joint 12b and the hollow shaft tube 11 can cooperate to form an installation cavity 11c.

[0050] In some embodiments, a riveting groove 16 may be provided on the first joint 12a, and the first joint 12a may be riveted to the hollow shaft tube 11 through the riveting groove 16; and / or, a riveting groove 16 may be provided on the second joint 12b, and the second joint 12b may be riveted to the hollow shaft tube 11 through the riveting groove 16.

[0051] Exemplarily, the hollow shaft tube 11 may be provided with a riveting portion 17, a riveting groove 16 may be provided on the circumferential side of the terminal assembly 12, the riveting groove 16 may correspond to the riveting portion 17 of the hollow shaft tube 11, and the riveting groove 16 of the terminal assembly 12 may be riveted to the riveting portion 17 of the hollow shaft tube 11 through a press ring riveting process.

[0052] It can be understood that riveting the terminal assembly 12 to the hollow shaft tube 11 through the riveting groove 16 can avoid problems such as limited connection strength, unstable properties, and easy weathering and falling off at the connection caused by bonding the terminal assembly 12 to the hollow shaft tube 11 in traditional technical solutions.

[0053] It can be further understood that the terminal assembly 12 can be installed at the corresponding port of the hollow shaft tube 11 through riveting processes such as press ring riveting, rivet connection, and hot riveting.

[0054] In some embodiments, mounting holes 12c may be provided on the first joint 12a and / or the second joint 12b, and the mounting holes 12c can be used to connect to the load, the fixed seat or the limiting member.

[0055] The magnetic component 13 may be disposed in the installation cavity 11c, and the magnetic component 13 includes a plurality of magnetic members.

[0056] In some embodiments, the magnetic component 13 includes at least a first magnetic member 13a and a second magnetic member 13b, and the corresponding surfaces of the first magnetic member 13a and the second magnetic member 13b perpendicular to the axial direction of the hollow shaft tube 11 are bonded and / or magnetically attracted to each other.

[0057] In some embodiments, the magnetic assembly 13 may at least include a first magnetic member 13a, a second magnetic member 13b, a third magnetic member 13c, and a fourth magnetic member 13d, and the magnetic assembly 13 may be disposed in the mounting cavity 11c.

[0058] In some embodiments, please additionally refer to Figure 5 , such as Figures 1 to 5 shown, the first magnetic member 13a and the fourth magnetic member 13d may be bonded to the corresponding surfaces along the axial direction of the hollow shaft tube 11 and magnetically repel each other, and the second magnetic member 13b and the third magnetic member 13c may be bonded to the corresponding surfaces along the axial direction of the hollow shaft tube 11 and magnetically repel each other.

[0059] Exemplarily, the corresponding surfaces where the first magnetic member 13a and the fourth magnetic member 13d magnetically repel each other along the axial direction of the hollow shaft tube 11 may be bonded by a magnet adhesive such as epoxy magnetic steel adhesive or acrylic magnetic steel adhesive.

[0060] Exemplarily, the corresponding surfaces where the second magnetic member 13b and the third magnetic member 13c magnetically repel each other along the axial direction of the hollow shaft tube 11 may be bonded by a magnet adhesive such as epoxy magnetic steel adhesive or acrylic magnetic steel adhesive.

[0061] It can be understood that by connecting the magnetically repulsive surfaces, on the one hand, the shape and position of the magnetic assembly 13 can be maintained stable, enhancing the overall stiffness of the magnetic assembly 13, and on the other hand, the magnetic field distribution can be optimized to form a stable force field, so that the magnetic spring 100 can provide a stable and strong reaction force when subjected to an external force.

[0062] In some embodiments, the surfaces of the first magnetic member 13a and the fourth magnetic member 13d perpendicular to the axial direction of the hollow shaft tube 11 can magnetically attract the corresponding surfaces of the third magnetic member 13c and the second magnetic member 13b.

[0063] It can be understood that by magnetically attracting the surfaces of the first magnetic member 13a and the fourth magnetic member 13d perpendicular to the axial direction of the hollow shaft tube 11 to the corresponding surfaces of the third magnetic member 13c and the second magnetic member 13b, the magnet steel formed integrally in the traditional way can be split into multiple small pieces of magnet steel along the surface perpendicular to the axial direction of the hollow shaft tube 11, so that the volume of the magnet steel raw material can be smaller. On the one hand, the raw material cost is reduced and the resource consumption in production, processing, transportation and other links is reduced. On the other hand, problems such as structural embrittlement and limited strength caused by the physical and chemical properties of the magnet steel material when the volume of the magnet steel is too large are also alleviated, improving the overall reliability and durability of the magnetic spring 100.

[0064] It can be further understood that by improving the arrangement and bonding method of the magnetic components in the magnetic assembly 13, the magnetic spring 100 can have good linear force-displacement characteristics, improving the performance of the magnetic spring 100.

[0065] In some embodiments, the second magnetic component 13b and the first magnetic component 13a are close to the second port 11b, the third magnetic component 13c and the fourth magnetic component 13d are far from the second port 11b, the lengths of the first magnetic component 13a and the third magnetic component 13c along the axial direction of the hollow shaft tube 11 are equal, and the lengths of the second magnetic component 13b and the fourth magnetic component 13d along the axial direction of the hollow shaft tube 11 are equal.

[0066] Among them, the fact that the first magnetic component 13a and the second magnetic component 13b are close to the second port 11b can be understood as that the positions of the first magnetic component 13a and the second magnetic component 13b are closer to the second port 11b relative to the third magnetic component 13c and the fourth magnetic component 13d.

[0067] Furthermore, the fact that the third magnetic component 13c and the fourth magnetic component 13d are far from the second port 11b can be understood as that the positions of the third magnetic component 13c and the fourth magnetic component 13d are farther from the second port 11b relative to the first magnetic component 13a and the second magnetic component 13b.

[0068] In some embodiments, the sum of the lengths of the first magnetic component 13a and the fourth magnetic component 13d along the axial direction of the hollow shaft tube 11 is equal to the sum of the lengths of the third magnetic component 13c and the second magnetic component 13b along the axial direction of the hollow shaft tube 11.

[0069] In some embodiments, at least one surface of the first magnetic component 13a and the second magnetic component 13b perpendicular to the axial direction of the hollow shaft tube 11 is flush, and at least one surface of the third magnetic component 13c and the fourth magnetic component 13d perpendicular to the axial direction of the hollow shaft tube 11 is flush.

[0070] It can be understood that by making the total length of the magnetic assembly 13 equal and / or making the surfaces of the magnetic assembly 13 flush, it is possible to ensure a uniform magnetic field distribution, facilitate electromechanical control and maintenance, facilitate the user of the magnetic spring 100 to perform design calculations and simulation verification, and ensure the performance of the magnetic spring 100.

[0071] In some embodiments, the length of the first magnetic component 13a and the third magnetic component 13c along the axial direction of the hollow shaft tube 11 can be greater than the length of the second magnetic component 13b and the fourth magnetic component 13d along the axial direction of the hollow shaft tube 11.

[0072] It can be understood that through the cross-stacked arrangement method, the structural rigidity of the magnetic component 13 can be further improved, and the overall reliability, durability and safety of the magnetic force spring 100 product can be improved, avoiding problems such as deformation of the magnetic component 13 caused by uneven stress and damage to the buffering performance of the magnetic force spring 100.

[0073] It can be further understood that the cross-stacked arrangement method and the bonding method of the magnetic parts, including but not limited to the arrangement of only four magnetic parts, can also be further expanded according to this method, by changing the total length and / or outer diameter of the magnetic component to adapt to the user needs of different stroke lengths and / or different magnetic force magnitudes.

[0074] In some embodiments, each magnetic part in the magnetic component 13 is a cylinder. Among them, a connecting surface 13f can be arranged on the circumferential side of the cylinder, which can be attracted and / or bonded to the corresponding connecting surface 13f of other magnetic parts.

[0075] Exemplarily, the end face of the cylinder of the magnetic part can be semi-circular, wherein the cylindrical surface corresponding to the straight edge of the semi-circle is the installation surface, and the cylindrical surface corresponding to the arc edge of the semi-circle can be attached to the inner wall of the hollow shaft tube 11.

[0076] It can be understood that each magnetic part in the magnetic component 13 is provided with a connecting surface 13f, and each magnetic part is a cylinder, which can facilitate the bonding, attraction, production and assembly of the magnetic component 13, and is beneficial to improving the overall structural strength of the magnetic component 13 and enhancing the reliability and durability of the magnetic force spring 100.

[0077] The filling body 15 can include a first filling body 15a, and the first filling body 15a can be arranged inside the hollow shaft tube 11 and close to the first port 11a.

[0078] Among them, the first filling body 15a being close to the first port 11a can be understood as that the position of the first filling body 15a is closer to the first port 11a relative to the second port 11b. For example, the filling body 15 can also include an elastomer and / or a colloid.

[0079] Exemplarily, a filling body 15 can be formed in the hollow shaft tube 11 by using a filling glue such as resin and polyurethane; and / or, an elastomer such as rubber and TPE can be used for filling, so as to prevent the magnetic component 13 from shifting during the use of the magnetic force spring 100.

[0080] It can be understood that by arranging the first filling body 15a and arranging the filling body 15 inside the hollow shaft tube 11, the magnetic component 13 can be prevented from vibrating or shifting during the use of the magnetic force spring 100.

[0081] In some embodiments, please supplement and refer to Figure 7 , such as Figure 3 andFigure 7 As shown, the filling body 15 may further include a second filling body 15b, wherein one end of the second filling body 15b may abut or be connected to the termination component 12, and the other end of the second filling body 15b may abut or be connected to the magnetic component 13.

[0082] It can be understood that by providing the second filling body 15b, it becomes possible to adjust the relative position of the magnetic component 13 in the total stroke of the magnetic spring 100, which is beneficial for the user to reasonably design the magnetic field distribution according to simulation or calculation, and further improve the performance of the magnetic spring 100.

[0083] The working part 14 may be provided on the hollow shaft tube 11.

[0084] Wherein, the working part 14 is axially movable along the hollow shaft tube 11, and the working part 14 can generate a magnetic interaction with the magnetic component 13.

[0085] In some embodiments, the working part 14 may include a magnetic material, so as to generate a magnetic attraction interaction with the magnetic component 13.

[0086] In some embodiments, the working part 14 may include a magnetic material, so as to generate a magnetic repulsive interaction with the magnetic component 13.

[0087] It can be understood that through the magnetic attraction interaction or magnetic repulsive interaction, functions such as buffering, control, positioning, and vibration reduction of the magnetic spring 100 are realized.

[0088] An embodiment of the present application provides a manufacturing method of a magnetic spring 100, which can be used to prepare the magnetic spring 100 in any embodiment of the present application. Please supplement and refer to Figure 6 , such as Figure 3 and Figure 6 As shown, the manufacturing method of the magnetic spring 100 may specifically include steps S101 to S104.

[0089] S101. Install one joint in the termination component 12 at the corresponding port of the hollow shaft tube 11.

[0090] Exemplarily, the first joint 12a may be installed at the first port 11a by a crimping riveting process, an adhesive process, or a combination of the two. Alternatively, the second joint 12b may be installed at the second port 11b by a crimping riveting process, an adhesive process, or a combination of the two.

[0091] It can be understood that installing the terminal assembly 12 at the corresponding port of the hollow shaft tube 11 through a caulking process, an adhesive process, or a combination of both can improve the firmness of the connection point between the terminal assembly 12 and the hollow shaft tube 11. In particular, installing the terminal assembly 12 at the corresponding port of the hollow shaft tube 11 through a caulking process or a combination of an adhesive process and a caulking process. On the one hand, physical caulking can have better anti-corrosion and anti-weathering properties compared to chemical adhesion, and can still maintain good firmness at the connection in environments such as long-term use, temperature and pressure changes, and vibration and shock, thereby improving the overall mechanical strength, reliability, durability, accuracy, and other performance of the magnetic spring 100.

[0092] S102. Dispose the magnetic component 13 inside the hollow shaft tube 11. After the magnetic component 13 is disposed in the hollow shaft tube 11, at least one installation cavity can be formed.

[0093] Exemplarily, the magnetic component 13 can be disposed in the installation cavity 11c close to the second port 11b.

[0094] It can be understood that before disposing the magnetic component 13 in the installation cavity 11c close to the second port 11b, if the first filler 15a is an elastomer, the first filler 15a can be disposed inside the hollow shaft tube 11 and close to the first port 11a.

[0095] It can be further understood that the magnetic component 13 can also be first disposed in the installation cavity 11c close to the second port 11b and the magnetic component 13 can be abutted against the second joint 12b, and then the first filler 15a can be disposed in the formed installation cavity.

[0096] S103. Dispose the filler 15 in the installation cavity.

[0097] In some embodiments, please refer additionally to Figure 7 , such as Figure 3 , Figure 6 and Figure 7 shown, the filler 15 can include a first filler 15a, and the first filler 15a can be disposed inside the hollow shaft tube 11 and close to the first port 11a.

[0098] Furthermore, the filler 15 can further include a second filler 15b.

[0099] Wherein, one end of the second filler 15b can be abutted against or connected to the terminal assembly 12, and the other end of the second filler 15b can be abutted against or connected to the magnetic component 13.

[0100] It can be understood that the first filling body 15a and the second filling body 15b can be arranged in the same installation cavity. If multiple installation cavities can be formed after the magnetic component 13 is arranged on the hollow shaft tube 11, the second filling body 15b can be arranged in a different installation cavity from the first filling body 15a.

[0101] It can be further understood that by arranging the filling body 15, the displacement of the magnetic component 13 can be prevented and its structural strength can be improved.

[0102] S104. Install another connector in the end connection component 12 at the corresponding port of the hollow shaft tube 11.

[0103] Exemplarily, the first connector 12a is installed at the first port 11a by a press ring riveting process, an adhesive process or a combination of both. Or, the second connector 12b is installed at the second port 11b by a press ring riveting process, an adhesive process or a combination of both.

[0104] Exemplarily, a pressure along the axial direction of the hollow shaft tube 11 is applied to the magnetic component 13 and the filling body 15 through the first connector 12a, and the first connector 12a is installed at the first port 11a by a press ring riveting process; or,

[0105] A pressure along the axial direction of the hollow shaft tube 11 is applied to the magnetic component 13 and the filling body 15 through the second connector 12b, and the second connector 12b is installed at the second port 11b by a press ring riveting process.

[0106] It can be understood that by applying pressure, the magnetic component 13 and the magnetic component 13 and the filling body 15 can be made more compact, which helps to improve the air drying and consolidation of the colloid contained in the filling body 15 and the magnetic component 13 and the structural strength of the entire assembled magnetic spring 100.

[0107] It can be further understood that the press ring riveting process can utilize the force-displacement law of the magnetic spring 100 to maintain the pressure applied during the manufacturing process by riveting, further ensuring the tightness inside the magnetic component 13 and between the magnetic component 13 and the filling body 15, thereby improving the mechanical structural strength of the magnetic spring 100 and enhancing the use performance such as the reliability, durability and stability of the magnetic spring 100.

[0108] The embodiment of the present application provides a buffer mechanism, which can include the magnetic spring 100 in any embodiment of the present application.

[0109] The embodiment of the present application provides an electric motor module, which can include the buffer mechanism in any embodiment of the present application and / or the magnetic spring 100 in any embodiment of the present application.

[0110] Without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0111] As described above, it is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

[0112] The above disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure of this application, the components and settings of specific examples are described above. Of course, they are only examples and are not intended to limit this application. In addition, this application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0113] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A magnetic spring, characterized in that: include: A hollow shaft tube, wherein the hollow shaft tube is provided with a first port and a second port along the axial direction; A terminal assembly, the terminal assembly comprising a first joint and a second joint, the first joint being mounted on the first port, the second joint being mounted on the second port, the first joint, the second joint and the hollow shaft tube being able to cooperate to form a mounting cavity; A filling body, the filling body comprising a first filling body, the first filling body is disposed in the hollow shaft tube and close to the first port; A magnetic component, the magnetic component at least comprising a first magnetic component, a second magnetic component, a third magnetic component and a fourth magnetic component, the magnetic component being arranged in the mounting cavity, the second magnetic component and the third magnetic component being bonded to corresponding surfaces along the axial direction of the hollow shaft tube and magnetically repelling each other, the fourth magnetic component and the first magnetic component being bonded to corresponding surfaces along the axial direction of the hollow shaft tube and magnetically repelling each other, and the surfaces of the second magnetic component and the third magnetic component perpendicular to the axial direction of the hollow shaft tube being able to magnetically attract the corresponding surfaces of the fourth magnetic component and the first magnetic component; A working piece, wherein the working piece is arranged on the hollow shaft tube, wherein the working piece is movable along the axial direction of the hollow shaft tube, the working piece can generate magnetic interaction with the magnetic component, the third magnetic piece and the fourth magnetic piece are close to the second port, the second magnetic piece and the first magnetic piece are far away from the second port, the second magnetic piece and the fourth magnetic piece have the same length along the axial direction of the hollow shaft tube, the third magnetic piece and the first magnetic piece have the same length along the axial direction of the hollow shaft tube, and the second magnetic piece and the fourth magnetic piece have a shorter length along the axial direction of the hollow shaft tube than the third magnetic piece and the first magnetic piece.

2. The magnetic spring according to claim 1, characterized in that: The first joint is provided with a rivet groove, and the first joint is riveted to the hollow shaft tube through the rivet groove; and / or, The second joint is provided with a rivet groove, and the second joint is riveted to the hollow shaft tube through the rivet groove.

3. The magnetic spring according to claim 1, characterized in that: The filling body further includes a second filling body, wherein one end of the second filling body abuts or is connected to the terminal assembly, and the other end of the second filling body abuts or is connected to the magnetic assembly.

4. The magnetic spring according to any one of claims 1 to 3, characterized in that: The first joint and / or the second joint is provided with a mounting hole, and the mounting hole can be used to connect a load, a fixing seat or a limiting member.

5. The magnetic spring according to any one of claims 1 to 3, characterized in that: Each magnetic component in the magnetic assembly is a column, wherein a connection surface is provided on the circumference of the column and can be attracted and / or bonded to a corresponding connection surface of another magnetic component.

6. A method for manufacturing a magnetic spring, for preparing the magnetic spring as claimed in any one of claims 1 to 5, characterized in that: include: Installing a connector in the terminal assembly to a corresponding port of the hollow shaft tube; The magnetic component is arranged in the hollow shaft tube, and after the hollow shaft tube is provided with the magnetic component, at least one installation cavity can be formed; placing the filling body in the installation cavity; Install another connector in the terminal assembly to the corresponding port of the hollow shaft tube.

7. The manufacturing method according to claim 6, characterized in that: The step of installing a connector in the terminal assembly on a corresponding port of the hollow shaft tube comprises: The first connector is mounted on the first port by a compression ring riveting process, an adhesive process or a combination of the two; or, The second connector is installed on the second port by means of a pressure ring riveting process, a gluing process or a combination of the two.

8. The manufacturing method according to claim 6, characterized in that: The step of installing another connector in the terminal assembly on a corresponding port of the hollow shaft tube comprises: Applying pressure along the axial direction of the hollow shaft tube to the magnetic assembly and the filling body through the first joint, and installing the first joint on the first port through a pressure ring riveting process; or, The second joint applies pressure along the axial direction of the hollow shaft tube to the magnetic component and the filling body, and the second joint is installed on the second port through a pressure ring riveting process.

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