Magnetic coupler internal part adopting long-strip permanent magnet

Abstract

The utility model relates to the field of machinery, in particular to a magnetic coupling mechanism. The magnetic coupler internal part adopting the long-strip permanent magnets comprises a permanent magnet support, a permanent magnet fixing structure is arranged on the permanent magnet support, and at least two long-strip permanent magnets are arranged on the permanent magnet fixing structure. The motor further comprises at least three spacers, the three spacers are fixed to the permanent magnet fixing structure in parallel, and the height of each spacer is not smaller than one half of the thickness of the long-strip-shaped permanent magnet. The long-strip permanent magnet is arranged between the two parallel distance pieces, and the two sides of the long-strip permanent magnet are bonded with the two distance pieces respectively. In the traditional design, the bottom of a permanent magnet is bonded with a permanent magnet fixing structure. The design has the risk of pull-off. Therefore, in a traditional scheme, a thin steel sleeve or a carbon fiber layer needs to be coated outside the permanent magnet, so that the permanent magnet is firmly fixed.

Description

Technical Field

[0001] The utility model relates to the field of machinery, and particularly to a magnetic coupling mechanism. Background Art

[0002] The magnetic coupling power system is a power system with many application scenarios. For example, linear motors, linear generators, magnetic coupling drive systems, and magnetic coupling cylinders.

[0003] Existing magnetic coupling pneumatic components generally use circular permanent magnets. For example, magnetic coupling cylinders generally use circular permanent magnets.

[0004] Using a circular permanent magnet has the characteristic of being easy to fix. It can be directly sleeved on the piston rod and naturally fixed by its own shape.

[0005] Other shaped magnets do not have this advantage. Due to the brittleness and strong magnetic force of the permanent magnet, there are some difficulties in fixing.

[0006] In addition, the circular permanent magnet in the magnetic coupling cylinder is limited by the brittleness characteristic of the permanent magnet and the processing difficulty, and it is difficult to make it large. This greatly limits the magnetic coupling force of the magnetic coupling cylinder. Summary of the Utility Model

[0007] The purpose of the utility model is to provide a magnetic coupling internal component using a long strip permanent magnet to solve at least one of the above technical problems.

[0008] The technical problems solved by the utility model can be realized by the following technical solutions:

[0009] A magnetic coupling internal component using a long strip permanent magnet includes a permanent magnet bracket, and a permanent magnet fixing structure is arranged on the permanent magnet bracket. It is characterized in that:

[0010] At least two long strip permanent magnets are arranged on the permanent magnet fixing structure;

[0011] It further includes at least three spacers, and the three spacers are fixedly arranged in parallel on the permanent magnet fixing structure. The height of the spacer is not less than half of the thickness of the long strip permanent magnet;

[0012] One long strip permanent magnet is arranged between two parallel spacers, and both sides of the long strip permanent magnet are bonded to the two spacers respectively.

[0013] In the traditional design, the bottom of the permanent magnet is bonded to the permanent magnet fixing structure. This design has the risk of pulling off. Therefore, in the traditional solution, it is necessary to coat a thin steel sleeve or a carbon fiber layer outside the permanent magnet to make the permanent magnet fixed firmly.

[0014] In this patent, the following structure is specifically provided: a long strip permanent magnet is arranged between two parallel spacers, and both sides of the long strip permanent magnet are bonded to the two spacers respectively.

[0015] This structure can withstand much greater tensile forces away from the permanent magnet fixing structure compared to the traditional structure where the bottom of the permanent magnet is bonded.

[0016] For the same long strip permanent magnet, after adopting the structure of this patent, the tensile force it can withstand is more than three times that of the traditional design.

[0017] When withstanding a large magnetic force tensile force, there is no need to add a thin steel sleeve or a carbon fiber layer outside the long strip permanent magnet. The reduction of the thin steel sleeve or the carbon fiber layer can, firstly, reduce costs, and secondly, reduce the distance between the coupled magnets. In particular, reducing the distance between the coupled magnets is of great significance for obtaining a stronger magnetic coupling force.

[0018] The magnetic coupling external component using a long strip permanent magnet includes an external permanent magnet bracket for carrying the permanent magnet. The external permanent magnet bracket includes an external permanent magnet fixing structure, and is characterized in that:

[0019] The external permanent magnet adopts a long strip-shaped external permanent magnet with an arc-shaped structure;

[0020] The external permanent magnet bracket adopts an external permanent magnet fixing structure with an arc-shaped depression;

[0021] The radian of the arc-shaped structure of the external permanent magnet fits the radian of the arc-shaped depression;

[0022] At both ends of the arc-shaped depression, convex structures are respectively arranged. The two convex structures abut against both ends of the external permanent magnet to form a fixation;

[0023] At both ends of the arc-shaped depression, baffles are respectively arranged, and at least one of the baffles is a detachable baffle.

[0024] During assembly, through the position of the detachable baffle, each external permanent magnet is inserted into the arc-shaped depression. During the process of inserting the external permanent magnet, magnetically conductive spacers with a matching shape can be inserted at intervals. After being filled, the detachable baffle is installed. The external permanent magnet is fixed from multiple directions. Description of the Drawings

[0025] Figure 1 , is the front view of the magnetic coupling internal component using a long strip permanent magnet;

[0026] Figure 2 , is the three-dimensional view after removing two long strip permanent magnets;

[0027] Figure 3 , is the cross-sectional view of the spacer installation structure;

[0028] Figure 4 is a perspective view of a magnetic coupling external component using a long strip permanent magnet;

[0029] Figure 5 is a perspective view of another angle after removing one outer permanent magnet;

[0030] Figure 6 is another structural sectional view of the spacer installation structure. Specific implementation manner

[0031] In order to make the technical means, creative features, achieved purposes and effects realized by the utility model easy to understand, the utility model is further elaborated below with reference to specific drawings.

[0032] Refer to Figure 1 , Figure 2 , a magnetic coupling internal component using a long strip permanent magnet, includes a permanent magnet bracket a1, and a permanent magnet fixing structure is arranged on the permanent magnet bracket a1;

[0033] At least two long strip permanent magnets a2 are arranged on the permanent magnet fixing structure;

[0034] It further includes at least three spacers a3, and the three spacers a3 are fixedly arranged in parallel on the permanent magnet fixing structure, and the height of the spacer a3 is not less than one half of the thickness of the long strip permanent magnet a2;

[0035] One of the long strip permanent magnets a2 is arranged between two parallel spacers a3, and both sides of the long strip permanent magnet a2 are bonded to the two spacers a3 respectively.

[0036] The permanent magnet fixing structure can be a fixing surface arranged on the permanent magnet bracket a1.

[0037] In the traditional design, the bottom of the permanent magnet is bonded to the permanent magnet fixing structure. This design has the risk of pulling off. Therefore, in the traditional solution, it is necessary to wrap a thin steel sleeve or a carbon fiber layer outside the permanent magnet to make the permanent magnet fixed firmly.

[0038] In this patent, the following structure is particularly set: the long strip permanent magnet a2 is arranged between two parallel spacers a3, and both sides of the long strip permanent magnet a2 are bonded to the two spacers a3 respectively.

[0039] This structure can withstand much greater pulling force away from the permanent magnet fixing structure compared with the traditional structure of bonding the bottom of the permanent magnet.

[0040] For the same long strip permanent magnet a2, after adopting the structure of this patent, the pulling force that can be withstood is more than 3 times that of the traditional design.

[0041] When the long permanent magnet a2 is subjected to a large magnetic pulling force, there is no need to add a thin steel sleeve or carbon fiber layer. The reduction of the thin steel sleeve or carbon fiber layer can reduce the cost and reduce the distance between the coupling magnets. In particular, reducing the distance between the coupling magnets is of great significance for obtaining a stronger magnetic coupling force.

[0042] The height of the spacer a3 is not less than half of the thickness of the long permanent magnet a2, in order to ensure that the spacer a3 has a sufficient bonding area and the long permanent magnet a2 has a sufficient thickness.

[0043] By ensuring that the long permanent magnet a2 has sufficient thickness, the number of the long permanent magnet a2 is reduced, and the assembly difficulty and production cost are reduced.

[0044] In addition, by preventing the long permanent magnet a2 from being too thin, the extension distance of the magnetic field distribution is ensured.

[0045] One side of the permanent magnet bracket a1 is not provided with a permanent magnet fixing structure, and no long permanent magnet a2 for magnetic coupling is arranged;

[0046] Support wheels O are respectively provided at both ends of the permanent magnet bracket a1.

[0047] The support wheel O is used to prevent the sliding friction force generated on the isolation pipe when the permanent magnet bracket a1 performs internal and external magnetic coupling.

[0048] At least three supporting wheels O are arranged around the two ends of the permanent magnet bracket a1, which can not only eliminate the sliding friction produced by the magnetic coupling force on one side of the long permanent magnet a2, but also eliminate the unbalance problems caused by shaking, vibration and other mechanical factors during operation, ensuring smooth operation.

[0049] It also includes an isolation pipeline, in which the permanent magnet bracket a1 and its auxiliary structures are arranged;

[0050] A sealing ring 11 is provided on the permanent magnet bracket a1 and fits the inner wall of the isolation pipe.

[0051] Furthermore, the bottom of the long permanent magnet a2 is bonded to the permanent magnet fixing structure, and the two sides of the long permanent magnet a2 are bonded to the two spacers a3 on both sides.

[0052] Three-sided bonding is achieved to improve firmness. When using adhesives with reduced hardness such as epoxy resin, the three sides can also be buffered to protect the hard and brittle permanent magnets.

[0053] The spacer a3 can be formed integrally on the permanent magnet support a1, and has the characteristics of simple structure and firm structure.

[0054] The spacer a3 may also be installed on the permanent magnet bracket a1.

[0055] It is allowed that the spacer a3 and the permanent magnet bracket a1 are made of different materials.

[0056] Preferably, the permanent magnet fixing structure is made of a structure with metallic aluminum element, and the spacer a3 is a spacer a3 made of magnetically conductive steel.

[0057] The aluminum alloy material is used to reduce the weight on the basis of ensuring the mechanical strength. The spacer a3 made of magnetically conductive steel can optimize the magnetic field layout between two adjacent long strip permanent magnets a2.

[0058] For two adjacent long strip permanent magnets a2, the same-sex magnetic poles can be arranged adjacent to each other. For example, the south poles are adjacent to each other. This makes the magnetic coupling force act over a longer distance.

[0059] Refer to Figure 6 , hooks a5 are arranged at both ends of the spacer a3, and a blocking structure matching the hooks a5 is arranged on the permanent magnet bracket a1. The hooks a5 of at least five spacers a3 are hooked on the blocking structure.

[0060] The blocking structure can be a groove or a recessed edge.

[0061] Both ends of the permanent magnet bracket a1 have structures that are higher than the permanent magnet fixing structure;

[0062] The permanent magnet fixing structure has a curved surface;

[0063] The spacer a3 is a magnetically conductive steel sheet with a curved arc;

[0064] For the hooks a5 at both ends of the spacer a3, one is a hook a5 integrated with the spacer a3, and the other is a metal sheet a51 detachable from the spacer a3.

[0065] This enables the spacer a3 to complete the assembly with the permanent magnet fixing structure having a larger curved surface while ensuring that the integrated structure is not disassembled.

[0066] A hook body is arranged at one end of the spacer a3, and the detachable metal sheet a51 has an opening. The hook body is inserted into the opening position to complete the fixation.

[0067] It has the advantages of simple structure and firm fixation.

[0068] On one side of the middle part of the permanent magnet bracket a1, a permanent magnet fixing structure is arranged, and the permanent magnet fixing structure has a curved surface;

[0069] On the other side, it has a structure with a height lower than that of the curved surface;

[0070] The permanent magnet fixing structure has a curved surface, and the arc degree of the outer contour of the cross-section of the surface exceeds 180 degrees and is less than 360 degrees;

[0071] The arc degree of the spacer a3 exceeds 180 degrees and is less than 360 degrees;

[0072] On the permanent magnet fixing structure, on the curved surface, at the end of the arc, there is a recess a52 provided.

[0073] In this patent, the height generally refers to the distance (height) from the axis of the permanent magnet bracket a1.

[0074] In the traditional concept, when the arc degree of the curved surface exceeds 180 degrees, the fitting spacer a3 cannot be inserted from the side.

[0075] However, in the above design, a structure lower than the curved surface and the recess a52 at the end of the curved surface are provided. During use, one end of the spacer a3 with an integrated hook body is first inserted into the structure lower than the curved surface, and then it is fitted onto the curved surface. With the help of the recess a52 at the end of the curved surface, the height of the other end of the spacer a3 is reduced, thereby allowing it to rotate towards the side of the recess a52 at the end of the curved surface.

[0076] Through rotation, the spacer a3 with an arc degree greater than 180 degrees and less than 360 degrees is fitted onto the curved surface with an arc degree greater than 180 degrees and less than 360 degrees.

[0077] Then, it is fixed by assembling the metal sheet a51.

[0078] Because both the spacer a3 and the curved surface have an arc degree greater than 180 degrees, they have their own stability and firmness.

[0079] When subjected to an outward pulling force, not only the hook a5 and the metal sheet a51 generate a counterforce, but also the inner arc part of the spacer a3 itself will press against the curved surface, generating a pulling force, making it difficult for the spacer a3 to be pulled off from the permanent magnet fixing structure, providing reliable conditions for the firm fixing of the long strip permanent magnet a2.

[0080] Refer to Figure 3 , the spacer a3 adopts at least a two - section structure, and the first - section spacer and the second - section spacer are connected by a detachable structure a4;

[0081] One end of the first - section spacer is clamped at a position on the permanent magnet bracket a1;

[0082] One end of the second - section spacer is clamped at another position on the permanent magnet bracket a1;

[0083] The first - section spacer and the second - section spacer are spliced and fixed, so that the entire spacer a3 is fixed on the permanent magnet bracket a1.

[0084] This structure can avoid using bolts, enabling indirect and firm fixation in a narrow space.

[0085] The detachable structure a4 adopted by the first - stage spacer and the second - stage spacer is that a socket is provided on the first - stage spacer, and a plug matching the socket is provided on the second - stage spacer;

[0086] The socket and the plug adopt a fitting structure that fits and inserts through side - surface contact;

[0087] The socket and the plug, through side - surface contact and insertion, form a structure that bites in the pulling - apart direction.

[0088] The detachable structure a4 adopted by the first - stage spacer and the second - stage spacer allows the adoption of the structure of a "wooden tenon" in woodworking, but is not limited to the "tenon" structure.

[0089] The way that at least one end of the first - stage spacer is clamped to a position on the permanent - magnet bracket a1 is that one end of the first - stage spacer hooks onto the permanent - magnet bracket a1.

[0090] The above design makes the structure of the entire spacer a3 easy to be designed on a plane, facilitating production and manufacturing with a metal plate by means of planar cutting or trimming in a low - cost, high - efficiency manner and with easy accuracy assurance.

[0091] A hook a5 is provided at one end of the first - stage spacer, and a strip - shaped structure matching the hook a5 is provided on the permanent - magnet bracket a1. The hooks a5 of at least ten first - stage spacers of the spacer a3 hook onto the strip - shaped structure.

[0092] The strip - shaped structure can be a groove or a recessed edge.

[0093] Adopting the strip - shaped structure is beneficial to one - sided low - cost forming. Compared with setting a matching component for each hook a5 of the first - stage spacer, the cost is greatly reduced, and it has a stronger error - tolerance ability, facilitating the mutual compensation of tolerances.

[0094] Furthermore:

[0095] A permanent - magnet fixing structure with an arc - shaped surface is provided on the permanent - magnet bracket a1;

[0096] The long strip permanent magnet a2 adopts an arc - shaped long strip permanent magnet;

[0097] The spacer a3 adopts a spacer a3 with an arc - shaped long strip structure.

[0098] This structure enables good fixation of non - circular permanent magnets.

[0099] The permanent - magnet bracket a1 can adopt a permanent - magnet bracket a1 of a pneumatic component that has an airtight structure and is driven by gas.

[0100] Driven by gas, it does work externally.

[0101] The permanent magnet bracket a1 can be a permanent magnet bracket a1 of a pneumatic component having an airtight structure and driven by gas.

[0102] Under the action of external force, the gas is driven and work is done on the gas.

[0103] On the permanent magnet bracket a1, the thickness of the long permanent magnet a2 is preferably 1.8-2.5 mm, and the width is preferably 5-13 mm; the spacer a3 is made of magnetic steel, and the thickness is preferably 1.5-3 mm.

[0104] The above design has good magnetic field layout characteristics.

[0105] The magnetic steel can be carbon steel or other steel with a grade lower than 304.

[0106] The permanent magnet bracket a1 is a bracket with a curved structure, and the permanent magnet fixing structure on the permanent magnet bracket a1 has a curved arc surface.

[0107] This structure allows the "magnetic coupling internal component using a long permanent magnet" to operate in a curved pipe, so that the long permanent magnet a2 on the permanent magnet fixing structure can fit more fully close to the inner wall of the curved pipe.

[0108] The magnetic coupling has an inner component, and an outer component coupled to the inner component.

[0109] An internal magnetic coupling component using a long permanent magnet is isolated from an external magnetic coupling component using a long permanent magnet by an isolation pipe.

[0110] The permanent magnet support a1 is provided with a rolling component for supporting on the inner wall of the isolation pipe to avoid sliding friction and isolation impact.

[0111] At least two long permanent magnets a2 are connected at their ends to form a ring; at least two adjacent spacers a3 are annular spacers a3; at least two long permanent magnets a2 are arranged to form a ring, which is sandwiched between two annular spacers a3.

[0112] The above design makes it possible to manufacture a permanent magnet ring that is large in size, firm in structure, low in cost and easy to install.

[0113] Reference Figure 4 , Figure 5 , further comprising an isolation pipe, wherein the permanent magnet bracket a1 and its accessory structures are arranged in the isolation pipe;

[0114] An external magnetic coupling component with long strip permanent magnets is arranged outside the isolation pipeline and magnetically coupled with an internal magnetic coupling component with long strip permanent magnets.

[0115] The external magnetic coupling component with long strip permanent magnets includes an external permanent magnet support b1 for carrying the permanent magnets. The external permanent magnet support b1 includes a fixing structure for the external permanent magnet b2. The external permanent magnet b2 is a long strip-shaped external permanent magnet b2 with an arc-shaped structure.

[0116] The external permanent magnet support b1 adopts a fixing structure for the external permanent magnet b2 with an arc-shaped depression.

[0117] The radian of the arc-shaped structure of the external permanent magnet b2 fits the radian of the arc-shaped depression.

[0118] At both ends of the external permanent magnet b2 in the arc-shaped depression, convex structures b3 are respectively arranged. The two convex structures b3 abut against both ends of the external permanent magnet b2 to form a fixation.

[0119] Baffles b4 are respectively arranged at both ends of the arc-shaped depression, and at least one baffle b4 is a detachable baffle b4.

[0120] At least two rollers are arranged on at least one side of the external permanent magnet support b1 for carrying the permanent magnets. The at least two rollers abut against the outer wall of the isolation pipeline to support the external permanent magnet support b1, so as to prevent the external permanent magnet b2 from being rubbed.

[0121] During assembly, through the position of the detachable baffle b4, each external permanent magnet b2 is inserted into the arc-shaped depression. During the insertion of the external permanent magnet b2, magnetically conductive spacer sheets with matching shapes can be inserted at intervals. After being filled, the detachable baffle b4 is installed. The external permanent magnet b2 is fixed from multiple directions.

[0122] This structure has an arched load-bearing characteristic and can be well fixed even without using a large amount of adhesive.

[0123] The external magnetic coupling component with long strip permanent magnets is used in cooperation with the internal magnetic coupling component with long strip permanent magnets.

[0124] Rolling components for supporting on the outer wall of the isolation pipeline are arranged on the external permanent magnet support b1 to avoid sliding friction and isolate impact.

[0125] Connecting components linked with an external linkage component are arranged on the external permanent magnet support b1, and the connecting components adopt movable connections.

[0126] It is allowed that the external permanent magnet support b1 shakes within a certain range to reduce the requirement for mechanical precision.

[0127] The basic principles, main features and advantages of the utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the utility model. Without departing from the spirit and scope of the utility model, there will be various changes and improvements to the utility model, and all these changes and improvements fall within the scope of the utility model claimed. The scope of protection claimed for the utility model is defined by the appended claims and their equivalents.

Claims

1. A magnetic coupling internal component using a long permanent magnet, including a permanent magnet bracket, on which a permanent magnet fixing structure is provided, characterized in that: At least two long permanent magnets are arranged on the permanent magnet fixing structure; It also includes at least three spacers, which are fixed in parallel on the permanent magnet fixing structure, and the height of the spacers is not less than half of the thickness of the long permanent magnet; The long permanent magnet is arranged between two parallel spacers, and two sides of the long permanent magnet are respectively bonded to the two spacers.

2. The magnetic coupling internal component using a long permanent magnet according to claim 1, characterized in that: One side of the permanent magnet bracket is not provided with a permanent magnet fixing structure, and no long permanent magnet for magnetic coupling is arranged; Support wheels are respectively arranged at both ends of the permanent magnet bracket; At least three supporting wheels are arranged around the two ends of the permanent magnet bracket.

3. The magnetic coupling internal component using a long permanent magnet according to claim 1, characterized in that: Hooks are arranged at both ends of the spacer, and a blocking structure matching the hooks is arranged on the permanent magnet bracket, and the hooks of at least five spacers are hooked on the blocking structure.

4. The magnetic coupling internal component using a long permanent magnet according to claim 1, characterized in that: Both ends of the permanent magnet bracket have structures that are higher than the permanent magnet fixing structure; The permanent magnet fixing structure has a curved surface; The spacer is made of magnetic steel sheet with curved arc; One of the hooks at both ends of the spacer is a hook that is integral with the spacer, and the other is a metal sheet that is detachable from the spacer.

5. The magnetic coupling internal component using a long permanent magnet according to claim 4, characterized in that: A permanent magnet fixing structure is provided on one side of the middle part of the permanent magnet bracket, and the permanent magnet fixing structure has a curved surface; The other side has a structure with a height lower than the curved surface; The permanent magnet fixing structure has a curved surface, and the curvature of the outer contour of the cross section of the surface exceeds 180 degrees and is less than 360 degrees; The arc degree of the spacer is more than 180 degrees and less than 360 degrees; The permanent magnet fixing structure has an arc surface, and a recess is arranged at the end of the arc.

6. The magnetic coupling internal component using a long permanent magnet according to any one of claims 1 to 5, characterized in that: The bottom of the long permanent magnet is bonded to the permanent magnet fixing structure, and the two sides of the long permanent magnet are bonded to the two spacers on both sides; The spacer is made of magnetic steel; Two adjacent long permanent magnets are arranged in a manner that the same magnetic poles are adjacent to each other; The permanent magnet bracket is provided with a permanent magnet fixing structure having a curved surface; The long strip permanent magnet is an arc-shaped long strip permanent magnet; The separator is a separator with an arc-shaped long strip structure; It also includes an isolation pipeline, in which the permanent magnet bracket and its auxiliary structures are arranged; A sealing ring which fits the inner wall of the isolation pipe is arranged on the permanent magnet bracket.

7. The magnetic coupling internal component using a long permanent magnet according to claim 1, characterized in that: The separator adopts at least a two-section structure, and the first section separator and the second section separator are connected by a detachable structure; One end of the first spacer is clamped to a point on the permanent magnet bracket; One end of the second spacer is clamped to another position of the permanent magnet bracket; The first spacer and the second spacer are spliced ​​and fixed, so that the entire spacer is fixed on the permanent magnet bracket.

8. The magnetic coupling internal component using a long permanent magnet according to any one of claims 1 to 5, characterized in that: It also includes an isolation pipeline, in which the permanent magnet bracket and its auxiliary structures are arranged; An external magnetic coupling component using a long permanent magnet and magnetically coupled to an internal magnetic coupling component using a long permanent magnet is arranged outside the isolation pipe; A magnetic coupling external component using a long permanent magnet includes an external permanent magnet bracket carrying the permanent magnet, wherein the external permanent magnet bracket includes an external permanent magnet fixing structure; The external permanent magnet is a long strip-shaped external permanent magnet with an arc structure; The external permanent magnet bracket adopts an external permanent magnet fixing structure with an arc-surface depression; The curvature of the arc-shaped structure of the outer permanent magnet fits the curvature of the concave arc surface.

9. The magnetic coupling internal component using a long permanent magnet according to claim 8, characterized in that: At least one side of the external permanent magnet support that carries the permanent magnet is provided with at least two rollers, and the at least two rollers abut against the outer wall of the isolation pipe to support the external permanent magnet support.

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