A combined magnetic steel

Abstract

The utility model discloses a combined magnetic steel, including cylindrical base frame, installation ring and arc magnetic steel, the outside of base frame is around equipped with limit strip, the installation ring is welded in the top and bottom of base frame, the inside of installation ring is surrounded and is opened with the sliding slot, the inside sliding slot is equipped with the sliding block of sliding, the inside of installation ring still is equipped with bolt, the one end of bolt is through bearing and sliding block rotation connection, the upper and lower part of arc magnetic steel front face is recessed, arc magnetic steel is located between the adjacent limit strip, and is installed through limit strip limit, the utility model does not need the glue pretreatment and solidification and wait, only need to insert the magnetic steel along the base frame axial insertion limit strip gap, rotates the bolt again and pushes the sliding block lock and can complete the assembly, and one person can complete the quick installation of a group of components, and the fault tolerance is high, and the position deviation can be corrected through the sliding block fine adjustment, and the production rework rate is reduced, and the scale, the automatic production is adapted.

Description

Technical Field

[0001] This utility model relates to the field of magnetic steel component technology, and more specifically, to a combined magnetic steel. Background Technology

[0002] In fields such as industrial automation, automotive electronics, and intelligent sensing, magnetic steel components are core functional parts. Their connection stability directly determines the operating accuracy of equipment, assembly efficiency affects production cycles, and maintenance convenience is related to operating costs. As equipment develops towards higher power, miniaturization, and longer lifespan, the shortcomings of traditional magnetic steel connection methods in terms of rigid fixation and flexible maintenance are becoming increasingly prominent. There is an urgent need for a combined solution that combines high-strength fixation with convenient disassembly and assembly. Currently, the mainstream connection methods between curved magnetic steel and the base frame in the industry are mainly divided into two categories:

[0003] Fixed adhesive connection: The arc-shaped magnet is directly glued to the outer wall of the base frame using strong adhesive (such as epoxy resin glue), and the fixation is achieved by relying on the adhesiveness of the glue.

[0004] Integrated molding connection: The base frame and the arc-shaped magnet are integrally cast using a mold, or fixed by non-removable methods such as welding and riveting.

[0005] While the existing method of connecting curved magnets to the base frame can meet the foundation fixing requirements, it has significant drawbacks in terms of installation efficiency, disassembly flexibility, and subsequent maintenance, as detailed below:

[0006] For fixed adhesive connections: Before installation, the outer wall of the base frame and the inner wall of the magnet must be thoroughly cleaned and degreased. If there is oil or impurities on the surface, it will directly lead to adhesive failure. After applying the adhesive, it is necessary to maintain a specific pressure and let it cure, which takes a long time and cannot achieve rapid assembly. At the same time, if the magnet is misaligned, the cured adhesive must be removed and reprocessed, which not only wastes materials but may also damage the surface of the base frame or magnet, resulting in a low tolerance for error.

[0007] For one-piece molded connections: special molds and large processing equipment are required. The position of the magnet cannot be adjusted after molding. If the performance of a single magnet is substandard during production (such as insufficient magnetic flux), the entire base frame and magnet assembly must be scrapped. The production cost is high and the installation flexibility is poor.

[0008] While existing methods of connecting curved magnets to the base frame can meet the basic fixing requirements in specific scenarios, they have significant drawbacks in terms of installation efficiency, disassembly flexibility, and subsequent maintenance costs. Therefore, there is an urgent need for a new type of combined magnet to solve these problems. Utility Model Content

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A composite magnet includes a cylindrical base frame, a mounting ring, and an arc-shaped magnet. A limiting strip is wound around the outside of the base frame. The mounting ring is welded to the top and bottom of the base frame. A sliding groove is formed inside the mounting ring, and a sliding block is slidably disposed inside the groove. A bolt is also installed inside the mounting ring, with one end of the bolt rotatably connected to the sliding block via a bearing. Grooves are formed on the upper and lower parts of the front of the arc-shaped magnet, and the arc-shaped magnet is positioned between adjacent limiting strips for installation with the limiting strips providing a limiting position.

[0011] Furthermore, the base frame is a solid or hollow cylinder, and the limiting strips are uniformly wrapped around the outer wall along the axial direction of the base frame, with the spacing between adjacent limiting strips matching the width of the arc-shaped magnet.

[0012] Furthermore, the shape of the sliding block is adapted to the groove of the arc-shaped magnet, and the sliding direction of the sliding block is consistent with the opening direction of the groove.

[0013] Furthermore, the curvature of the arc-shaped magnet matches the curvature of the outer wall of the base frame, and the inner wall of the arc-shaped magnet is in close contact with the outer wall of the base frame.

[0014] Furthermore, the arc-shaped magnet is inserted between adjacent limiting strips along the axial direction of the base frame. After insertion, the sidewall of the limiting strip fits tightly against the sidewall of the arc-shaped magnet, restricting the arc-shaped magnet from moving circumferentially along the base frame.

[0015] Furthermore, when the bolt is rotated clockwise, the bearing pushes the sliding block to slide along the groove, so that the sliding block is fully inserted into the groove, restricting the arc-shaped magnet from moving axially along the base frame.

[0016] Furthermore, after the sliding block is inserted into the groove, the outer wall of the sliding block fits tightly against the inner wall of the groove without any obvious gap, thus preventing the arc-shaped magnet from wobbling radially.

[0017] Furthermore, the base frame and mounting ring are made of stainless steel or aluminum alloy, and the arc-shaped magnet is made of neodymium iron boron or ferrite permanent magnet material.

[0018] Furthermore, the outer wall diameter tolerance of the base frame is ±0.1mm, and the radial thickness tolerance of the arc-shaped magnet is ±0.05mm.

[0019] Furthermore, the base frame and mounting ring are galvanized for rust prevention, and the arc-shaped magnet is passivated.

[0020] In summary, this utility model has the following beneficial technical effects:

[0021] 1. This utility model does not require glue pretreatment and curing. It only requires inserting the magnet into the gap of the limiting strip along the axial direction of the base frame, and then rotating the bolt to push the sliding block to lock it to complete the assembly. A single person can complete the rapid installation of a set of components. It has a high fault tolerance rate, and the positional deviation can be corrected by fine adjustment of the sliding block. The production rework rate is reduced, and it is suitable for large-scale and automated production.

[0022] 2. During maintenance, this utility model can be released by simply rotating the bolt in the opposite direction to unlock the sliding block, and the magnet can be directly pulled out for replacement. The base frame and mounting ring are reusable, and the pure mechanical limiting structure does not rely on glue, avoiding connection failure caused by high temperature and high humidity. The dual constraint of the limiting strip and the sliding block can effectively resist vibration and high temperature, and improve service life. Attached Figure Description

[0023] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts.

[0024] in:

[0025] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0026] Figure 2 This is an exploded structural diagram of the present invention;

[0027] Figure 3 This is a top view of the structure of this utility model;

[0028] Figure 4 This utility model Figure 3 Enlarged view of point A;

[0029] Figure 5 This is a structural schematic diagram of the arc-shaped magnet and mounting ring of this utility model.

[0030] Figures 1-5 Explanation of reference numerals in the attached drawings: 1. Base frame; 101. Limiting strip; 2. Mounting ring; 201. Sliding block; 202. Bolt; 203. Slide groove; 3. Arc-shaped magnet; 301. Groove. Detailed Implementation

[0031] Based on the technical solution of this utility model, without changing the essential spirit of this utility model, those skilled in the art can propose various interchangeable structural methods and implementation methods. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model, and should not be regarded as the entirety of this utility model or as a limitation or restriction of the technical solution of this utility model.

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0033] like Figures 1 to 5 As shown, a modular magnet is composed of a cylindrical base frame 1, an annular mounting ring 2, and an arc-shaped magnet 3. The components work together through the coordinated operation of "circumferential positioning of the limit strip and axial locking of the sliding block" to achieve rapid assembly and stable fixation of the arc-shaped magnet. It is suitable for scenarios such as motors, sensors, and magnetic transmission devices. It does not require modification of the existing equipment installation structure and can directly replace traditional adhesive or one-piece molded magnet components, greatly improving maintenance convenience.

[0034] Among them, the cylindrical base frame 1 serves as the supporting foundation for the entire magnet assembly. The mounting ring 2 is welded to both ends of the base frame 1 to form axial constraints. The arc-shaped magnet 3 is double-limited by the limiting strip 101 and the sliding block 201 to ensure that there is no risk of loosening during equipment operation. At the same time, each component adopts an appropriate anti-corrosion treatment process, which can adapt to humid and dusty industrial conditions and extend its service life.

[0035] Reference Figure 1 and Figure 2 The base frame 1 is made of stainless steel or aluminum alloy and can be made of solid or hollow material according to actual load-bearing requirements. It is lightweight and has the ability to resist deformation. The surface is treated with galvanizing for rust prevention and can be adapted to humid and dusty industrial conditions. The outer wall is uniformly surrounded by limiting strips 101. The limiting strips 101 are long strip-shaped metal protrusions that are fixed to the outer wall of the base frame 1 by welding. After welding, the joints need to be ground to avoid sharp edges scratching the inner wall of the arc-shaped magnet 3. The spacing between adjacent limiting strips 101 is precisely matched with the width of the arc-shaped magnet 3 to ensure that there is no circumferential movement space after the arc-shaped magnet 3 is inserted. At the same time, the surface of the base frame 1 is treated with galvanizing for rust prevention. The thickness of the zinc layer is strictly controlled to ensure corrosion resistance and prevent the coating from affecting the fit with the arc-shaped magnet 3 due to excessive thickness.

[0036] Reference Figure 1 and Figure 2 The mounting ring 2 is a ring-shaped metal structure made of the same material as the base frame 1, ensuring good material compatibility during welding and preventing weld cracking due to differences in thermal expansion coefficients. The mounting ring 2 is fixed to the top and bottom faces of the base frame 1 by a circumferential welding process.

[0037] Reference Figure 3 and Figure 4The mounting ring 2 has a groove 203 inside. The groove 203 is a rectangular groove structure. The groove width is adapted to the thickness of the sliding block 201. The groove wall is precision polished to reduce the frictional resistance when the sliding block 201 slides. The sliding block 201 is a rectangular or fan-shaped metal block with a polished surface. One end of it is rotatably connected to the bolt 202 through a bearing. The bearing is a deep groove ball bearing, which can make the sliding block 201 only translate along the groove 203 when the bolt 202 rotates, and not rotate synchronously with the bolt 202.

[0038] Bolt 202 and mounting ring 2 are connected by a threaded connection. The thread precision has been optimized to ensure that the sliding block 201 can be smoothly pushed when rotated clockwise without any jamming. The head of bolt 202 is provided with an internal hexagonal groove, which is convenient for operation with an internal hexagonal wrench and is suitable for narrow installation spaces.

[0039] Reference Figure 3 , Figure 4 and Figure 5 The arc-shaped magnet 3 is made of permanent magnet material. Its curvature perfectly matches the curvature of the outer wall of the base frame 1, ensuring a tight fit between the inner wall and the outer wall of the base frame 1 without any obvious gaps. The upper and lower parts of its front surface have openable grooves 301. The grooves 301 are rectangular, with a depth adapted to the length of the sliding block 201. The groove walls are passivated to prevent the sliding block 201 from scratching the magnet surface when inserted. The entire surface of the arc-shaped magnet 3 is passivated, forming a dense oxide film that effectively resists the effects of high temperature and humidity changes on its magnetic properties.

[0040] The assembly of this modular magnet requires no special equipment and can be completed by a single person. The specific steps are as follows:

[0041] Slowly insert the arc-shaped magnet 3 along the axial direction of the base frame 1, aligning it with the gap between the adjacent limiting strips 101. During insertion, keep the magnet stable to avoid violent collisions with the limiting strips 101. Continue until the bottom of the arc-shaped magnet 3 contacts the top of the bottom mounting ring 2 of the base frame 1. At this point, the inner wall of the arc-shaped magnet 3 is tightly fitted with the outer wall of the base frame 1, and the side wall of the limiting strip 101 is fitted with the side wall of the arc-shaped magnet 3, completing the circumferential positioning of the arc-shaped magnet 3 and restricting its movement along the circumference of the base frame 1.

[0042] The number of arc-shaped magnets 3 can be flexibly adjusted according to actual usage needs. It is only necessary to ensure that there is no overlap or gap between adjacent arc-shaped magnets 3, and that the grooves 301 of all arc-shaped magnets 3 face the mounting ring 2.

[0043] Insert an Allen wrench into the hex socket of the head of bolt 202 and rotate bolt 202 clockwise. Since bolt 202 is threaded with mounting ring 2, bolt 202 moves radially inward along mounting ring 2 during rotation, and pushes sliding block 201 to slide smoothly along slide groove 203 through bearing.

[0044] Continue rotating bolt 202 until sliding block 201 is fully inserted into the groove 301 of arc-shaped magnet 3. At this time, the outer wall of sliding block 201 is tightly fitted with the inner wall of groove 301 without obvious gap. Stop rotating bolt 202. Sliding block 201 forms an axial limit on arc-shaped magnet 3, restricting its axial movement along the base frame 1, thus completing the assembly of the entire magnet assembly.

[0045] Anti-loosening working principle:

[0046] During equipment operation, the arc-shaped magnet 3 may tend to move axially or circumferentially along the base frame 1 due to factors such as vibration and impact. When circumferential movement occurs, the side wall of the limiting strip 101 abuts against the side wall of the arc-shaped magnet 3. Since the limiting strip 101 is welded and fixed to the base frame 1, it can effectively block the circumferential movement of the arc-shaped magnet 3. When axial movement occurs, the inner wall of the groove 301 of the arc-shaped magnet 3 abuts against the outer wall of the sliding block 201. The sliding block 201 is constrained by the sliding groove 203 and cannot move axially, thus blocking the axial movement of the arc-shaped magnet 3. Through the double limiting of the limiting strip 101 and the sliding block 201, it is ensured that the arc-shaped magnet 3 remains stable during equipment operation and there is no risk of loosening.

[0047] During assembly, this device eliminates the need for complex processes such as glue curing and mold forming. Furthermore, when the arc-shaped magnet 3 needs to be inspected and repaired, the entire maintenance process does not require damage to the base frame 1 and the mounting ring 2. Components can be reused, significantly reducing maintenance costs and downtime.

[0048] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A composite magnet, characterized in that, It includes a cylindrical base frame (1), a mounting ring (2), and an arc-shaped magnet (3); The base frame (1) is surrounded by a limiting strip (101); The mounting ring (2) is welded to the top and bottom of the base frame (1); the mounting ring (2) has a sliding groove (203) inside, and a sliding block (201) is slidably arranged inside the sliding groove (203); a bolt (202) is also installed inside the mounting ring (2), and one end of the bolt (202) is rotatably connected to the sliding block (201) through a bearing; The arc-shaped magnet (3) has grooves (301) on the upper and lower parts of its front side. The arc-shaped magnet (3) is located between adjacent limiting strips (101) and is installed by limiting the position of the limiting strips (101).

2. The combined magnet according to claim 1, characterized in that: The base frame (1) is a solid or hollow cylinder, and the limiting strip (101) is uniformly wrapped around the outer wall along the axial direction of the base frame (1). The spacing between adjacent limiting strips (101) is adapted to the width of the arc-shaped magnet (3).

3. The combined magnet according to claim 1, characterized in that: The shape of the sliding block (201) is adapted to the groove (301) of the arc magnet (3), and the sliding direction of the sliding block (201) is consistent with the opening direction of the groove (301).

4. The combined magnet according to claim 1, characterized in that: The arc of the arc magnet (3) matches the arc of the outer wall of the base frame (1), and the inner wall of the arc magnet (3) is in close contact with the outer wall of the base frame (1).

5. The combined magnet according to claim 1, characterized in that: The arc-shaped magnet (3) is inserted between adjacent limiting strips (101) along the axial direction of the base frame (1). After insertion, the side wall of the limiting strip (101) is tightly fitted with the side wall of the arc-shaped magnet (3), restricting the arc-shaped magnet (3) from moving circumferentially along the base frame (1).

6. The combined magnet according to claim 1, characterized in that: When the bolt (202) is rotated clockwise, the sliding block (201) is pushed along the groove (203) by the bearing, so that the sliding block (201) is fully inserted into the groove (301), restricting the arc magnet (3) from moving axially along the base frame (1).

7. The combined magnet according to claim 1, characterized in that: After the sliding block (201) is inserted into the groove (301), the outer wall of the sliding block (201) fits tightly with the inner wall of the groove (301) without any obvious gap, thus avoiding radial shaking of the arc-shaped magnet (3).

8. The combined magnet according to claim 1, characterized in that: The base frame (1) and mounting ring (2) are made of stainless steel or aluminum alloy, and the arc-shaped magnet (3) is made of neodymium iron boron or ferrite permanent magnet material.

9. The combined magnet according to claim 1, characterized in that: The outer diameter tolerance of the base frame (1) is ±0.1mm, and the radial thickness tolerance of the arc-shaped magnet (3) is ±0.05mm.

10. The combined magnet according to claim 1, characterized in that: The base frame (1) and mounting ring (2) are galvanized for rust prevention, and the arc-shaped magnet (3) is passivated.

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