Magnetic spring and manufacturing method

Abstract

The invention discloses a magnetic spring and a manufacturing method, the magnetic spring comprises a hollow shaft tube, an end connection assembly, a filling body, a magnetic assembly and a working piece, the end connection assembly is arranged at a corresponding port of the hollow shaft tube to form a mounting cavity; the filling body is arranged in the hollow shaft tube; the magnetic assembly at least comprises a first magnetic part, a second magnetic part, a third magnetic part and a fourth magnetic part, the magnetic assembly is arranged in the mounting cavity, the second magnetic part and the third magnetic part are bonded along the axial corresponding surfaces of the hollow shaft tube and are repellent in magnetism, and the fourth magnetic part and the first magnetic part are bonded along the axial corresponding surfaces of the hollow shaft tube and are repellent in magnetism; the surfaces, perpendicular to the axial direction of the hollow shaft tube, of the second magnetic part and the third magnetic part can magnetically attract the corresponding surfaces of the fourth magnetic part and the first magnetic part; the working piece is movably arranged on the hollow shaft pipe in the axial direction of the hollow shaft pipe, and the working piece and the magnetic piece have magnetic interaction. The magnetic spring has the advantages of being high in structural strength, long in stroke and the like.

Description

Technical Field

[0001] The present application relates to the technical field of magnetic springs, and in particular to a magnetic spring and a manufacturing method thereof. Background Art

[0002] With the continuous advancement 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, due to the limitations of processing accuracy, material properties and other factors, traditional magnetic springs and their internal magnetic steel / permanent magnets often have the problem of insufficient structural strength, and the volume or length of the magnetic steel / permanent magnet is limited, which leads to the limited travel 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, it is easy to cause equipment performance degradation, shortened service life, and even cause safety accidents in industrial environments such as extreme temperature and pressure, long-term use, impact and vibration. Therefore, how to improve the structural strength of magnetic springs through structural improvements and process improvements, so as to ensure the reliability and stability of long-stroke magnetic springs in practical applications and long-term use, has become an urgent problem to be solved. Summary of the invention

[0003] In view of this, the present application proposes a magnetic spring and a manufacturing method, which has the advantages of being reliable and durable, having high structural strength, having a long stroke and being expandable and extendable.

[0004] In a first aspect, the present application provides a magnetic spring, comprising: 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 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.

[0005] 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: 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.

[0006] 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.

[0007] 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

[0008] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0009] Figure 1 This is a schematic structural diagram of a magnetic spring from a first perspective in one embodiment of the present application; Figure 2 This is an exploded schematic diagram of a magnetic spring in one embodiment of the present application; Figure 3 This is a schematic cross-sectional structural diagram of a magnetic spring in one embodiment of the present application; Figure 4 This is a schematic diagram of the structure of partial components of a magnetic spring in one embodiment of the present application; Figure 5is a schematic structural diagram of a magnetic component in an embodiment of the present application; Figure 6 This is a schematic diagram of the steps of a manufacturing method for producing a magnetic spring in one embodiment of the present application; Figure 7 It is a schematic diagram of the cross-sectional structure of a magnetic spring in one embodiment of the present application.

[0010] Description of reference numerals: 100, magnetic spring; 11, hollow shaft tube; 11a, first port; 11b, second port; 11c, mounting cavity; 12, termination assembly; 12a, first joint; 12b, second joint; 12c, mounting hole; 13, magnetic assembly; 13a, first magnetic part; 13b, second magnetic part; 13c, third magnetic part; 13d, fourth magnetic part; 13f, connecting surface; 14, working part; 15, filling body; 15a, first filling body; 15b, second filling body; 16, rivet groove; 17, riveting part.

[0011] 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. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0013] The flowcharts shown in the accompanying drawings are only examples and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may also be decomposed, combined or partially merged, so the actual execution order may change according to actual conditions.

[0014] It should also be understood that the terms used in this application specification are only for describing specific realities. In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0015] It should be understood that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0016] It should also be understood that when an element is referred to as being "fixed" 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 being "connected" to another element, it can be directly connected to the other element or it can be indirectly connected to the other element through an intermediate element.

[0017] The terms used in this 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 of "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 number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0018] It should be further understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0019] With the rapid development of high-tech industries such as batteries, photovoltaics, and semiconductors, motor modules are being widely used in production lines in various industries to improve the degree of production automation and ensure production efficiency and process quality. However, for production lines that have high requirements for the accuracy and stability of machining, assembly and other processes, the buffer mechanisms such as mechanical springs used in traditional motor modules may often experience problems such as fatigue and elastic attenuation during long-term use. Magnetic springs do not rely on mechanical contact and spring expansion to generate elastic force, so they have better reliability and durability. On the basis of effectively protecting the mechanical structure and components of the motor module, they can output stable, reliable, and easy-to-control buffer force as part of the buffer mechanism.

[0020] With the industrial upgrading of aerospace, ship power, engineering machinery and other manufacturing industries, traditional automation equipment has also put forward higher requirements for the range and load capacity of its motor modules and buffer mechanisms. However, due to the physical limitations of the materials and limited structural strength of permanent magnets such as the integrated magnetic steel inside the magnetic spring, increasing the total stroke of the magnetic spring will easily cause the mechanical structural strength of the permanent magnet itself to decrease, thereby reducing the load capacity of the magnetic spring, affecting the reliability and durability of the buffer mechanism and even the motor module as a whole, and the process difficulty and cost of producing and processing the permanent magnet will be increased. How to effectively improve the range, load capacity and reliability of magnetic springs by improving manufacturing methods and improving structural design has become a problem that needs to be solved.

[0021] After extending the length of the magnetic steel and permanent magnet inside the magnetic spring, problems such as low assembly strength of adhesive connections in the traditional magnetic spring manufacturing process or structural design will be revealed due to changes in the internal structure and increased strength requirements. As a result, how to improve its structural strength through structural and process improvements in industrial environments such as extreme temperature and pressure, long-term use, impact and vibration, so as to ensure the reliability and stability of long-stroke magnetic springs in actual applications and long-term use, has become an urgent problem to be solved.

[0022] In particular, traditional magnetic springs often directly bond the terminal 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 loose connections will occur, which can easily lead to decreased stability and insufficient durability under long-term use and extreme load scenarios, and even cause negative consequences such as debonding and loosening of the terminal components, reducing production efficiency and affecting safe production.

[0023] See also Figures 1 to 4 ,like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the embodiment of the present application proposes a magnetic spring 100. The magnetic spring 100 may include a hollow shaft tube 11, a termination assembly 12, a magnetic assembly 13 and a working piece 14. The hollow shaft tube 11 may be provided with a first port 11a and a second port 11b along the axial direction. The termination assembly 12 may include a first joint 12a and a second joint 12b, the first joint 12a is riveted to the first port 11a by a pressure ring, the second joint 12b is riveted to the second port 11b by a pressure ring, and the first joint 12a, the second joint 12b and the hollow shaft tube 11 can cooperate to form an installation cavity 11c.

[0024] The magnetic assembly 13 may be disposed in the mounting cavity 11 c , and the magnetic assembly 13 may include a plurality of magnetic members.

[0025] Exemplarily, the first connector 12a is installed on the first port 11a by press ring riveting, adhesive connection or a combination of the two, or the second connector 12b is installed on the second port 11b by press ring riveting, adhesive connection or a combination of the two.

[0026] It can be understood that the compression ring riveting connection method, as a physical connection, is more reliable and durable than traditional gluing, saves material and process costs, and can indirectly facilitate the installation of the hollow shaft tube 11 without having to set additional connecting components such as external threads and snaps at the end, saving material and process costs.

[0027] It can be further understood that the riveted portion 17 on the hollow shaft tube 11 can be used as a mounting 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 riveted portion 17 can be used as a mounting portion to be connected to a load, a base and / or a limit member.

[0028] The working piece 14 can be arranged on the hollow shaft tube 11, wherein the working piece 14 is movable along the axial direction of the hollow shaft tube 11, and a mounting portion is provided on the working piece 14, which can be used to connect a load, a fixed seat and / or a limit piece, and the working piece 14 can generate magnetic interaction with the magnetic piece.

[0029] In some embodiments, the magnetic spring 100 may include a hollow shaft tube 11, a terminal assembly 12, a magnetic assembly 13, a working piece 14, and a filling body 15. The hollow shaft tube 11 may be provided with a first port 11a and a second port 11b along its axial direction.

[0030] In some embodiments, the first port 11 a and / or the second port 11 b opened along the axial direction of the hollow shaft tube 11 may also be provided with external threads for connecting to a fixing seat or a load.

[0031] It is understandable that the hollow shaft tube 11 may also be provided with other ports to facilitate electrical, liquid or gas communication between the internal components of the hollow shaft tube 11 and external devices.

[0032] The termination assembly 12 may include a first connector 12a and a second connector 12b.

[0033] Exemplarily, the first joint 12a can be installed on the first port 11a, the second joint 12b can be installed on the second port 11b, and the first joint 12a, the second joint 12b and the hollow shaft tube 11 can cooperate to form a mounting cavity 11c.

[0034] In some embodiments, a rivet 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 rivet groove 16; and / or, a rivet 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 rivet groove 16.

[0035] Exemplarily, the hollow shaft tube 11 may be provided with a riveted portion 17, and the circumferential side of the termination assembly 12 may be provided with a rivet groove 16, which may correspond to the riveted portion 17 of the hollow shaft tube 11, and the rivet groove 16 of the termination assembly 12 may be riveted to the riveted portion 17 of the hollow shaft tube 11 through a pressure ring riveting process.

[0036] It is understandable that riveting the termination assembly 12 to the hollow shaft tube 11 through the rivet groove 16 can avoid the problems of limited connection strength, unstable properties, easy weathering and falling off caused by bonding the termination assembly 12 to the hollow shaft tube 11 in the traditional technical solution.

[0037] It can be further understood that the termination assembly 12 can be installed on the corresponding port of the hollow shaft tube 11 by riveting processes such as pressure ring riveting, rivet connection, and hot riveting.

[0038] In some embodiments, a mounting hole 12c may be provided on the first joint 12a and / or the second joint 12b, and the mounting hole 12c may be used to connect a load, a fixing seat or a limiting member.

[0039] The magnetic assembly 13 may be disposed in the mounting cavity 11 c , and the magnetic assembly 13 includes a plurality of magnetic members.

[0040] In some embodiments, the magnetic assembly 13 includes at least a first magnetic member 13 a and a second magnetic member 13 b , and the first magnetic member 13 a and the second magnetic member 13 b are bonded and / or magnetically attracted to corresponding surfaces perpendicular to the axial direction of the hollow shaft tube 11 .

[0041] In some embodiments, the magnetic assembly 13 may include at least a first magnetic component 13a, a second magnetic component 13b, a third magnetic component 13c, and a fourth magnetic component 13d, and the magnetic assembly 13 may be disposed in the mounting cavity 11c.

[0042] In some embodiments, please refer to Figure 5 ,like Figures 1 to 5 As shown, the first magnetic component 13a and the fourth magnetic component 13d can be bonded along the corresponding axial surfaces of the hollow shaft tube 11 and magnetically repel each other, and the second magnetic component 13b and the third magnetic component 13c can be bonded along the corresponding axial surfaces of the hollow shaft tube 11 and magnetically repel each other.

[0043] Exemplarily, the first magnetic component 13a and the fourth magnetic component 13d can be bonded together along the axial direction of the hollow shaft tube 11 at corresponding surfaces that are magnetically repelled by each other through magnetic steel adhesives such as epoxy magnetic steel glue and acrylic magnetic steel glue.

[0044] Exemplarily, the second magnetic component 13b and the third magnetic component 13c can be bonded together along the corresponding surfaces of the hollow shaft tube 11 that are magnetically repelled in the axial direction by using magnetic steel adhesive such as epoxy magnetic steel adhesive and acrylic magnetic steel adhesive.

[0045] It can be understood that by connecting the magnetically repelling surfaces, on the one hand, the shape and position of the magnetic component 13 can be kept stable and the overall stiffness of the magnetic component 13 can be enhanced; 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 external forces.

[0046] 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 be magnetically attracted to the corresponding surfaces of the third magnetic member 13c and the second magnetic member 13b.

[0047] It can be understood that by making the surfaces of the first magnetic component 13a and the fourth magnetic component 13d perpendicular to the axial direction of the hollow shaft tube 11 magnetically attract each other with the corresponding surfaces of the third magnetic component 13c and the second magnetic component 13b, the traditional integrated magnetic steel can be split into multiple small pieces of magnetic steel along the surface perpendicular to the axial direction of the hollow shaft tube 11, so that the volume of the magnetic steel raw material can be smaller. On the one hand, the cost of raw materials is reduced and the resource consumption in the production, processing, transportation and other links is reduced. On the other hand, it also alleviates the problems of structural brittleness and limited strength caused by the physical and chemical properties of the magnetic steel material when the volume of the magnetic steel is too large, thereby improving the overall reliability and durability of the magnetic spring 100.

[0048] It can be further understood that by improving the arrangement and bonding method of the magnetic parts in the magnetic assembly 13 , the magnetic spring 100 can have good linear force-displacement characteristics, thereby improving the performance of the magnetic spring 100 .

[0049] 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 away from the second port 11b, the first magnetic component 13a and the third magnetic component 13c have the same length along the axial direction of the hollow shaft tube 11, and the second magnetic component 13b and the fourth magnetic component 13d have the same length along the axial direction of the hollow shaft tube 11.

[0050] The fact that the first magnetic member 13a and the second magnetic member 13b are close to the second port 11b can be understood as that, relative to the third magnetic member 13c and the fourth magnetic member 13d, the first magnetic member 13a and the second magnetic member 13b are closer to the second port 11b.

[0051] Furthermore, the third magnetic member 13c and the fourth magnetic member 13d being far away from the second port 11b can be understood as, relative to the first magnetic member 13a and the second magnetic member 13b, the third magnetic member 13c and the fourth magnetic member 13d are located farther away from the second port 11b.

[0052] In some embodiments, the sum of the axial lengths of the first magnetic member 13 a and the fourth magnetic member 13 d along the hollow shaft tube 11 is equal to the sum of the axial lengths of the third magnetic member 13 c and the second magnetic member 13 b along the hollow shaft tube 11 .

[0053] In some embodiments, at least one surface of the first magnetic member 13a and the second magnetic member 13b perpendicular to the axial direction of the hollow shaft tube 11 are aligned, and at least one surface of the third magnetic member 13c and the fourth magnetic member 13d perpendicular to the axial direction of the hollow shaft tube 11 are aligned.

[0054] It can be understood that by achieving equal total length of the magnetic component 13 and / or achieving flat surfaces of the magnetic component 13, uniform magnetic field distribution can be ensured, electromechanical control and maintenance can be facilitated, and users of the magnetic spring 100 can be facilitated to perform design calculations and simulation verifications, thereby ensuring the performance of the magnetic spring 100.

[0055] In some embodiments, the length of the first magnetic component 13 a and the third magnetic component 13 c along the axial direction of the hollow shaft tube 11 may be greater than the length of the second magnetic component 13 b and the fourth magnetic component 13 d along the axial direction of the hollow shaft tube 11 .

[0056] It can be understood that the cross-stacking arrangement can further improve the structural rigidity of the magnetic component 13 and improve the overall reliability, durability and safety of the magnetic spring 100 product, thereby avoiding problems such as deformation of the magnetic component 13 and damage to the buffering performance of the magnetic spring 100 due to uneven force.

[0057] It can be further understood that the cross-stacking arrangement and the bonding method of the magnetic parts, including but not limited to the arrangement of only four magnetic parts, can be further expanded according to this method by changing the total length and / or outer diameter of the magnetic assembly to adapt to user needs for different stroke lengths and / or user needs for different magnetic force sizes.

[0058] In some embodiments, each magnetic component in the magnetic assembly 13 is a column, wherein a connection surface 13f may be provided on the circumference of the column, which can be attracted and / or bonded with the corresponding connection surface 13f of other magnetic components.

[0059] Exemplarily, the end surface of the column of the magnetic component may be semicircular, wherein the cylindrical surface corresponding to the straight edge of the semicircle is the mounting surface, and the cylindrical surface corresponding to the arc edge of the semicircle can fit with the inner wall of the hollow shaft tube 11 .

[0060] 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 column, 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 spring 100.

[0061] The filling body 15 may include a first filling body 15 a , and the first filling body 15 a may be disposed in the hollow shaft tube 11 and close to the first port 11 a .

[0062] The first filling body 15a being close to the first port 11a can be understood as that the first filling body 15a is closer to the first port 11a than the second port 11b. For example, the filling body 15 may also include an elastic body and / or a colloid.

[0063] Exemplarily, a filling glue such as resin or polyurethane may be used to form a filling body 15 in the hollow shaft tube 11 ; and / or an elastomer such as rubber or TPE may be used for filling, thereby preventing the magnetic component 13 from shifting during use of the magnetic spring 100 .

[0064] It can be understood that by providing the first filling body 15 a and the filling body 15 in the hollow shaft tube 11 , the magnetic component 13 is prevented from vibrating or shifting during the use of the magnetic spring 100 .

[0065] In some embodiments, please refer to Figure 7 ,like Figure 3 and Figure 7 As shown, the filling body 15 may further include a second filling body 15 b , wherein one end of the second filling body 15 b may abut or be connected to the termination component 12 , and the other end of the second filling body 15 b may abut or be connected to the magnetic component 13 .

[0066] It can be understood that by providing the second filling body 15b, it is 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.

[0067] The working piece 14 can be disposed on the hollow shaft tube 11 .

[0068] The working piece 14 is movable along the axial direction of the hollow shaft tube 11 , and the working piece 14 can generate magnetic interaction with the magnetic component 13 .

[0069] In some embodiments, the working piece 14 may include a magnetic material so as to generate a magnetic attraction interaction with the magnetic component 13 .

[0070] In some embodiments, the working piece 14 may include a magnetic material, thereby generating a magnetic repulsive effect with the magnetic component 13 .

[0071] It can be understood that the functions of the magnetic spring 100 such as buffering, controlling, positioning, and vibration reduction are achieved through the mutual attraction or repulsion of magnetic forces.

[0072] The present application embodiment provides a method for manufacturing a magnetic spring 100, which can be used to prepare a magnetic spring 100 as in any embodiment of the present application. Figure 6 ,like Figure 3 and Figure 6 As shown, the manufacturing method of the magnetic spring 100 may specifically include steps S101 to S104.

[0073] S101 , installing a connector in the termination assembly 12 on a corresponding port of the hollow shaft tube 11 .

[0074] Exemplarily, the first connector 12a may be installed on the first port 11a by means of a compression ring riveting process, an adhesive process, or a combination thereof, or the second connector 12b may be installed on the second port 11b by means of a compression ring riveting process, an adhesive process, or a combination thereof.

[0075] It can be understood that by installing the termination assembly 12 on the corresponding port of the hollow shaft tube 11 through a pressure ring riveting process, an adhesive process or a combination of the two, the strength of the connection point between the termination assembly 12 and the hollow shaft tube 11 can be improved. In particular, by installing the termination assembly 12 on the corresponding port of the hollow shaft tube 11 through a pressure ring riveting process or a combination of an adhesive process and a pressure ring riveting process, on the one hand, physical riveting can have better corrosion resistance and weathering resistance than chemical bonding, and can still maintain a good strength of the connection under long-term use, temperature and pressure changes, vibration and shock environments, thereby improving the overall mechanical strength and reliability, durability, precision and other performance of the magnetic spring 100.

[0076] S102, disposing the magnetic component 13 in 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.

[0077] Exemplarily, the magnetic component 13 may be disposed in the mounting cavity 11 c close to the second port 11 b .

[0078] It is understandable that before the magnetic component 13 is disposed in the installation cavity 11c close to the second port 11b, if the first filling body 15a is an elastic body, the first filling body 15a can be disposed in the hollow shaft tube 11 and close to the first port 11a.

[0079] It can be further understood that the magnetic component 13 can be firstly 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 filling body 15a can be disposed in the formed installation cavity.

[0080] S103, placing the filling body 15 in the installation cavity.

[0081] In some embodiments, please refer to Figure 7 ,like Figure 3 , Figure 6 and Figure 7 As shown, the filling body 15 may include a first filling body 15 a , which may be disposed in the hollow shaft tube 11 and close to the first port 11 a .

[0082] Furthermore, the filling body 15 may also include a second filling body 15b.

[0083] One end of the second filling body 15 b may abut against or be connected to the terminal component 12 , and the other end of the second filling body 15 b may abut against or be connected to the magnetic component 13 .

[0084] It is understandable that the first filling body 15a and the second filling body 15b can be arranged in the same installation cavity. If the hollow shaft tube 11 can form multiple installation cavities after the magnetic component 13 is arranged, the second filling body 15b can be arranged in a different installation cavity from the first filling body 15a.

[0085] It can be further understood that, by providing the filling body 15 , the magnetic component 13 can be prevented from shifting and its structural strength can be improved.

[0086] S104 , installing another connector in the termination assembly 12 to a corresponding port of the hollow shaft tube 11 .

[0087] Exemplarily, the first connector 12a is installed on the first port 11a by a compression ring riveting process, an adhesive process, or a combination thereof, or the second connector 12b is installed on the second port 11b by a compression ring riveting process, an adhesive process, or a combination thereof.

[0088] Exemplarily, the magnetic assembly 13 and the filler 15 are subjected to axial pressure along the hollow shaft tube 11 through the first joint 12a, and the first joint 12a is installed on the first port 11a through a pressure ring riveting process; or, The second joint 12 b applies pressure along the axial direction of the hollow shaft tube 11 to the magnetic component 13 and the filling body 15 , and the second joint 12 b is installed on the second port 11 b by a press ring riveting process.

[0089] It is understandable that by applying pressure, the magnetic component 13 and the space between the magnetic component 13 and the filling body 15 can be made more compact, which helps to improve the filling body 15, the colloid contained in the magnetic component 13, and the structural strength of the magnetic spring 100 after drying and solidification.

[0090] It can be further understood that the compression 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 structure strength of the magnetic spring 100 and enhancing the reliability, durability, stability and other performance of the magnetic spring 100.

[0091] The embodiment of the present application provides a buffer mechanism, which may include the magnetic spring 100 in any embodiment of the present application.

[0092] An embodiment of the present application provides a motor module, which may include the buffer mechanism in any embodiment of the present application and / or the magnetic spring 100 in any embodiment of the present application.

[0093] Those skilled in the art may combine and associate different embodiments or examples and features of different embodiments or examples described in this specification without mutual contradiction.

[0094] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

[0095] The disclosure above provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0096] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does 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 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.

2. The magnetic spring according to claim 1, characterized in that: The third magnetic component and the fourth magnetic component are close to the second port, the second magnetic component and the first magnetic component are far away from the second port, the second magnetic component and the fourth magnetic component have the same length along the axial direction of the hollow shaft tube, and the third magnetic component and the first magnetic component have the same length along the axial direction of the hollow shaft tube.

3. The magnetic spring according to claim 2, characterized in that: The lengths of the second magnetic component and the fourth magnetic component along the axial direction of the hollow shaft tube are smaller than the lengths of the third magnetic component and the first magnetic component along the axial direction of the hollow shaft tube.

4. 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.

5. 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.

6. The magnetic spring according to any one of claims 1 to 5, 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.

7. The magnetic spring according to any one of claims 1 to 5, 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 with a corresponding connection surface of other magnetic components.

8. A method for manufacturing a magnetic spring, for preparing the magnetic spring as claimed in any one of claims 1 to 7, 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.

9. The manufacturing method according to claim 8, 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 ring riveting process, a gluing 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.

10. The manufacturing method according to claim 8 or 9, 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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