A magnetic attraction device

Abstract

This invention relates to the field of magnetic attraction technology, and more particularly to a magnetic attraction device to solve the problem of the fragility of permanent magnet materials in existing magnetic attraction devices. The magnetic attraction device includes multiple permanent magnets and mounting components. The mounting components include multiple mounting spaces, in which the permanent magnets are fixed. Each mounting space at least surrounds the periphery of the permanent magnet. With this magnetic attraction device, because the periphery of the permanent magnet is surrounded by the mounting components, when the magnetic attraction device is subjected to external impact or falls from a height, the mounting components can prevent the permanent magnets from being directly impacted, thereby preventing breakage.

Description

Technical Field

[0001] This invention relates to the field of magnetic attraction technology, and more particularly to a magnetic attraction device. Background Technology

[0002] Magnetic devices are widely used in home and industrial applications. They utilize the magnetic force to hold various hardware tools, such as wrenches, screwdrivers, and pliers. Currently, the main material used in magnetic devices is permanent magnet; however, permanent magnets are relatively fragile and easily break upon impact or drops. Summary of the Invention

[0003] In view of this, the present invention provides a magnetic attraction device to solve the problem of the fragility of permanent magnet materials in the prior art.

[0004] To achieve one, some, or all of the above objectives, or other objectives, the present invention proposes:

[0005] A magnetic attraction device includes: a plurality of permanent magnets and a mounting component, the mounting component including a plurality of mounting spaces, the permanent magnets being fixed within the mounting spaces, and the mounting spaces at least surrounding the periphery of the permanent magnets.

[0006] In one embodiment, the thickness of the permanent magnet is less than or equal to the depth of the installation space.

[0007] In one embodiment, the mounting component is made of a rigid material and includes multiple fixing parts, with at least one fixing part provided on the side of each mounting space, the fixing parts pressing against the permanent magnet.

[0008] In one embodiment, multiple fixing parts are distributed circumferentially around each mounting space.

[0009] In one embodiment, the fixing portion is at least partially formed by localized plastic deformation of the mounting member.

[0010] In one embodiment, the mounting member includes an upper surface, and the fixing portion includes a recessed structure formed on the upper surface. The recessed structure is formed by an external force acting on the mounting member from the upper surface along the thickness direction of the mounting member, so that the fixing portion undergoes at least partial plastic deformation toward the permanent magnet.

[0011] In one embodiment, the mounting component includes an upper surface and a lower surface, the mounting space is a through-hole structure penetrating the upper and lower surfaces, and the permanent magnet is disposed flush with the lower surface of the mounting component.

[0012] In one embodiment, the mounting element includes an upper surface and a lower surface, and the mounting space is a groove structure formed on the upper surface.

[0013] In one embodiment, the installation space and the permanent magnet correspond one-to-one.

[0014] In one embodiment, the mounting component is elongated, and multiple permanent magnets are distributed along the length of the mounting component.

[0015] In one embodiment, the mounting component includes an upper surface and a lower surface, each permanent magnet includes a first magnetic end and a second magnetic end, the first magnetic end and the second magnetic end have opposite polarities, the first magnetic ends of the plurality of permanent magnets are all disposed facing the upper surface, and the second magnetic ends of the plurality of permanent magnets are all disposed facing the lower surface.

[0016] In one embodiment, the mounting element is a magnetically conductive metal plate, and the permanent magnet is a neodymium iron boron magnet or a ferrite magnet.

[0017] In one embodiment, the magnetic attraction device further includes an adhesive layer that is attached to the mounting element.

[0018] Implementing the embodiments of the present invention will have the following beneficial effects:

[0019] With the above-mentioned magnetic attraction device, since the permanent magnet is surrounded by the mounting component, when the magnetic attraction device is subjected to external impact or falls from a height, the mounting component can prevent the permanent magnet from being directly impacted, thereby preventing the permanent magnet from breaking. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of one embodiment;

[0022] Figure 2 for Figure 1 An enlarged schematic diagram of part A in the middle;

[0023] Figure 3 This is a second overall structural schematic diagram of an embodiment and an enlarged schematic diagram of part B;

[0024] Figure 4 This is a cross-sectional schematic diagram of one embodiment, in which the mounting space is a through-hole structure;

[0025] Figure 5 This is a cross-sectional view of another embodiment, in which the mounting space is a groove structure;

[0026] Figure 6 This is a cross-sectional schematic diagram of one embodiment, in which multiple installation space structures are different;

[0027] Figure 7 This is a cross-sectional schematic diagram of one embodiment, in which the fixing part is annular;

[0028] Figure 8 This is a cross-sectional schematic diagram of one embodiment, in which the mounting component is a plate-like structure;

[0029] Figure 9 A schematic diagram of a structure in which multiple magnetic attraction devices are stacked in the thickness direction;

[0030] Figure 10 This is a cross-sectional view and an enlarged view of part C in one embodiment.

[0031] in:

[0032] 1. Permanent magnet; 11. First magnetic pole; 12. Second magnetic pole; 13. Top surface; 14. Bottom surface; 15. Outer wall;

[0033] 2. Mounting component; 21. Upper surface; 22. Lower surface; 23. Mounting space; 231. Through-hole structure; 232. Groove structure; 24. Fixing part; 241. Recessed structure;

[0034] 3. Adhesive layer. Detailed Implementation

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings are used to distinguish different objects and not to describe a particular order.

[0036] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0037] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0038] Common magnetic products are usually made of permanent magnets. Permanent magnets are brittle and easily break after impact or drop from a height, resulting in a relatively short lifespan. In addition, once a permanent magnet breaks, its internal magnetic domain structure is destroyed, and the non-magnetic gaps between the fragments block magnetic flux, making it impossible to restore the original magnetic properties and structural integrity through splicing or bonding.

[0039] Therefore, please refer to the appendix. Figure 1 and attached Figure 2 This invention proposes a magnetic attraction device, comprising multiple permanent magnets 1 and mounting components 2. The mounting components 2 are provided with multiple mounting spaces 23, and each permanent magnet 1 is correspondingly disposed within a mounting space 23, with the mounting space 23 at least surrounding the periphery of the permanent magnet 1. Since the periphery of the permanent magnet 1 is surrounded by the mounting components 2, when the magnetic attraction device is subjected to external impact or falls from a height, the mounting components 2 can directly bear the impact, thereby significantly reducing the probability of breakage of the permanent magnet 1.

[0040] In some embodiments, the permanent magnet 1 is made of neodymium iron boron (NdFeB). NdFeB magnets are characterized by high magnetic energy product and strong adsorption force, making them suitable for applications requiring high magnetic attraction strength. In other embodiments, the permanent magnet 1 can also be made of ferrite, which is stable, durable, and has a lower cost.

[0041] In some embodiments, the mounting component 2 can be made of non-magnetic materials such as stainless steel or rubber. In other embodiments, the mounting component 2 is made of a magnetic material, such as iron, carbon steel, iron-nickel alloy, or cold-rolled steel sheet. Because the magnetic material has good magnetic permeability, after the permanent magnet 1 is fixed to the mounting component 2, the magnetic lines of force can be guided and the loop closed through the mounting component 2. In other words, the permanent magnet 1 can form a new magnetic circuit together with the magnetic material. Compared to the permanent magnet 1 itself, this magnetic attraction device can reduce the dispersion of magnetic force, concentrate the magnetic flux output direction, thereby increasing the magnetic field strength and enhancing the attraction capacity of the magnetic attraction device.

[0042] To further prevent the permanent magnet 1 from being directly impacted, in some embodiments, the thickness of the permanent magnet 1 is less than or equal to the depth of the mounting space 23, so that the permanent magnet 1 can be completely embedded within the mounting space 23. Of course, the thickness of the permanent magnet 1 can also be slightly greater than the depth of the mounting space 23, for example, the thickness of the permanent magnet 1 is 100%-110% of the depth of the mounting space 23. In this case, the possibility of the permanent magnet being directly impacted is extremely low. Simultaneously, a raised protective edge (not shown in the figures) can also be provided at the edge of the mounting member 2, also for protecting the permanent magnet from impact.

[0043] Regarding the structure of the installation space, see the appendix in some embodiments. Figure 4The mounting component 2 includes an upper surface 21 and a lower surface 22. A mounting space 23 penetrates the upper surface 21 and lower surface 22 to form a through-hole structure 231. The through-hole structure 231 can be a circular through-hole, a square through-hole, a polygonal through-hole, etc. The depth of the mounting space 23 is the distance between the upper surface 21 and the lower surface 22. The permanent magnet 1 includes a top surface 13 and a bottom surface 14. The thickness of the permanent magnet 1 is the distance between the top surface 13 and the bottom surface 14. In this embodiment, the thickness of the permanent magnet 1 is equal to the depth of the mounting space 23. The top surface 13 of the permanent magnet 1 is flush with the upper surface 21 of the mounting component 2, and the bottom surface 14 of the permanent magnet 1 is flush with the lower surface 22 of the mounting component 2, preventing the permanent magnet 1 from protruding from the mounting component 2. The mounting component 2 can provide good protection.

[0044] Regarding the structure of the installation space, see the appendix in some other embodiments. Figure 5 The mounting space 23 can also be a groove structure 232 formed on the upper surface 21. The groove structure 232 can be a circular groove, a square groove, a polygonal groove, etc. The groove structure 232 has a bottom, and the depth of the mounting space 23 is the distance between the bottom of the groove structure 232 and the upper surface 21. The bottom of the groove structure 232 can further guide and concentrate the magnetic flux, so that the magnetic flux generated by the permanent magnet 1 is more concentrated on one side of the upper surface 21 of the mounting part 2, thereby enhancing the attraction of the magnetic attraction device on the working surface. In one embodiment, the thickness of the mounting space 23 is half the thickness of the mounting part 2, and the thickness of the permanent magnet 1 is equal to the distance from the bottom of the groove to the lower surface 22 of the mounting part 2. That is, the thickness of the permanent magnet 1 is equal to the remaining solid thickness of the mounting part 2 after slotting, forming a symmetrical magnetic guiding path, so that the magnetic resistance characteristics of the mounting part 2 and the magnetomotive force of the permanent magnet 1 reach a balanced state. While suppressing magnetic saturation, the magnetic flux is directionally conducted to the working surface to enhance the magnetic field strength of the magnetic attraction device.

[0045] It should be noted that in other embodiments, the multiple mounting spaces 23 of the same magnetic attraction device can be configured with different structures, that is, each mounting space 23 has a different shape. When the mounting space 23 is a through-hole structure 231, each through-hole structure 231 can have different shapes. For example, the same mounting member 2 may have both square and circular through holes; similarly, when the mounting space 23 is a groove structure 232, each groove structure 232 can also have different shapes. In addition, refer to the appendix... Figure 6 Multiple installation spaces 23 can also be integrated into the same magnetic attraction device in the form of a combination of groove structure 232 and through hole structure 231, for example, groove structure 232 and through hole structure 231 are arranged alternately.

[0046] In summary, this magnetic attraction device utilizes a mounting component 2 to combine multiple small permanent magnets 1 together, with each permanent magnet 1 enclosed within the mounting component 2, forming a large magnetic component. On one hand, the small size of the permanent magnets 1 makes them less prone to breakage, and the surrounding protection provided by the mounting component 2 ensures the lifespan of the magnetic attraction device. On the other hand, the multiple permanent magnets 1 and the magnetically conductive mounting component 2 work together to form a composite magnetic circuit, concentrating magnetic flux. The overall magnetic attraction force output is superior to that of a single permanent magnet 1 structure of the same size. This also saves on the amount of permanent magnets 1 used during the mass production of the magnetic attraction device, thereby reducing production costs.

[0047] Regarding the shape of the magnetic attraction device, its overall structure can be either elongated or planar. For example, see Appendix. Figure 1 To be continued Figure 6 When the mounting component 2 is elongated, multiple permanent magnets 1 are arranged along the length of the mounting component 2; see appendix. Figure 8 When the mounting component 2 is a plate-shaped structure, multiple permanent magnets 1 can be arranged in a matrix on the plane of the mounting component 2, thereby meeting the requirements for adsorption shape and attraction force distribution in different application scenarios. In one embodiment, the mounting component 2 is a long strip structure, and multiple permanent magnets 1 are arranged in a row along the length direction of the mounting component 2, and the spacing between each permanent magnet 1 and its adjacent permanent magnets 1 is approximately the same.

[0048] It should be noted that each permanent magnet 1 includes a first magnetic end 11 and a second magnetic end 12. The first magnetic end 11 and the second magnetic end 12 have opposite polarities. In this application, regardless of how the multiple permanent magnets 1 are arranged within the mounting component 2 (such as linear or matrix arrangement), the first magnetic end 11 of the permanent magnet 1 corresponds to its top surface 13, and the second magnetic end 12 of the permanent magnet 1 corresponds to its bottom surface 14, thereby causing the upper surface 21 and the lower surface 22 of the mounting component to exhibit two opposite polarities. The reason for this arrangement is that inconsistent magnetic pole directions will cause the magnetic flux to be closed internally between the magnets instead of being released outward, resulting in mutual cancellation of magnetic forces and chaotic magnetic field distribution, which affects the adsorption performance of the magnetic attraction device.

[0049] In addition, see appendix Figure 9 When multiple magnetic devices of this embodiment are provided, the uniform magnetic pole arrangement offers users another way to combine them, namely, multiple magnetic devices can be stacked in the thickness direction. Since each magnetic device has the same polarity on its upper surface 21 and lower surface 22, there will be no problem of magnetic pole repulsion or cancellation. Therefore, when multiple magnetic devices are stacked along the thickness direction, the magnetic force can be superimposed, enhancing the adsorption strength. This combination method can adapt to usage environments with larger loads.

[0050] Regarding the fixing between the permanent magnet 1 and the mounting member 2, in one embodiment, the mounting member 2 is made of a rigid material, and multiple permanent magnets 1 are respectively installed in corresponding mounting spaces 23 through clearance fit. The mounting member 2 includes multiple fixing parts 24, and at least one fixing part 24 is provided on the side of each mounting space 23. The fixing parts 24 are used to press the permanent magnet 1 to fix the permanent magnet 1 in the mounting space 23, preventing it from displacing or falling off due to vibration, impact, or long-term use. In one embodiment, the mounting member 2 undergoes local plastic deformation at the fixing part, for example, by stamping the mounting member 2, causing the stamped part to undergo plastic deformation towards the outer wall 15 of the permanent magnet 1, pressing it tightly against the outer wall 15 of the permanent magnet 1. This fixing method does not require the use of glue or other additional fixing structures, making the assembly between the permanent magnet 1 and the mounting member 2 simple and the fixing reliable.

[0051] Preferably, the hardness range of the material of the mounting component 2 is limited to 20HA to 40HA, such as pure iron, low carbon steel, silicon steel, etc., to ensure that the mounting component 2 has a certain deformation capacity under external force. At the same time, the material within this hardness range can prevent the mounting component 2 from breaking due to its high brittleness.

[0052] Specifically, in one embodiment, the fixing part 24 includes a recessed structure 241, which is formed by a stamping process. Stamping is performed on the upper surface 21 of the mounting part 2, with the stamping location being the peripheral region of each permanent magnet 1. The stamping tool stamps the mounting part 2 along its thickness direction, forming the recessed structure 241 on the upper surface 21. This stamping operation does not penetrate the mounting part 2, but only causes localized plastic deformation. Because the stamping location is close to the sidewall of the permanent magnet 1, the recessed structure 241 formed after stamping causes lateral deformation of the material of the mounting part 2 in that region. Some material pushes inward and presses against the peripheral surface of the permanent magnet 1, achieving clamping and fixing of the permanent magnet 1 and the mounting part 2. Adjusting the depth of the recessed structure 241 formed by stamping can correspondingly adjust the squeezing force of the fixing part 24 on the permanent magnet 1, preventing the permanent magnet 1 from being crushed.

[0053] In one embodiment, a fixing part 24 is provided on the side of each mounting space 23. The fixing part 24 may be provided in a point-like manner adjacent to the mounting space 23, or it may be as shown in the attached figure. Figure 7 As shown, the installation space 23 is arranged in a ring shape.

[0054] In another embodiment, see Appendix Figure 3Each mounting space 23 is surrounded by multiple fixing parts 24 arranged circumferentially. These fixing parts 24 are pressed against the sidewall of the permanent magnet 1. On one hand, during the plastic deformation of the mounting component 2, the permanent magnet 1 is subjected to uniform compressive force from multiple directions, thus preventing breakage due to excessive local stress and improving the yield rate during processing. On the other hand, the multiple symmetrically distributed fixing parts 24 can form a multi-point support structure during use, further preventing the permanent magnet 1 from loosening or detaching. Each permanent magnet 1 can be a cylindrical structure, and correspondingly, the cross-sectional shape of the mounting space 23 is also circular. The multiple fixing parts 24 are centrally symmetrical about the central axis of the mounting space 23. In one embodiment, as shown in the figures, the number of fixing parts 24 is four, that is, four recessed structures 241 are formed on the upper surface 21 of the mounting component 2, and each recessed structure 241 extends arcuately in the circumferential direction.

[0055] In one embodiment, see Appendix Figure 10 The magnetic attraction device also includes an adhesive layer 3, which is attached to the mounting component 2. Specifically, the adhesive layer 3 can be made of materials such as double-sided adhesive, hot melt adhesive, or pressure-sensitive adhesive, and is used to fix the magnetic attraction device to a non-magnetic mounting base such as a wall, wooden furniture, plastic surface, glass, or ceramic.

[0056] Obviously, the embodiments described above are merely some embodiments of the present invention, not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this invention.

Claims

1. A magnetic attraction device, characterized in that, include: Multiple permanent magnets (1); The mounting component (2) includes multiple mounting spaces (23), the permanent magnet (1) is fixed in the mounting space (23), and the mounting space (23) at least surrounds the periphery of the permanent magnet (1).

2. The magnetic attraction device according to claim 1, characterized in that, The thickness of the permanent magnet (1) is less than or equal to the depth of the mounting space (23).

3. The magnetic attraction device according to claim 1, characterized in that, The mounting component (2) is made of rigid material. The mounting component (2) includes a plurality of fixing parts (24), and at least one fixing part (24) is provided on the side of each mounting space (23). The fixing part (24) compresses the permanent magnet (1).

4. A magnetic attraction device according to claim 3, characterized in that, Each installation space (23) has multiple fixing parts (24) distributed around its circumference.

5. A magnetic attraction device according to claim 3, characterized in that, The fixing part (24) is formed at least partially by the local plastic deformation of the mounting part (2).

6. A magnetic attraction device according to claim 5, characterized in that, The mounting member (2) includes an upper surface (21), and the fixing part (24) includes a recessed structure (241) formed on the upper surface (21). The recessed structure (241) is formed by an external force acting on the mounting member (2) from the upper surface (21) along the thickness direction of the mounting member (2) to cause the fixing part (24) to undergo the plastic deformation at least partially to the permanent magnet (1).

7. A magnetic attraction device according to claim 1, characterized in that, The mounting component (2) includes an upper surface (21) and a lower surface (22), the mounting space (23) is a through hole structure (231) that penetrates the upper surface (21) and the lower surface (22), and the permanent magnet (1) is flush with the lower surface (22) of the mounting component (2).

8. A magnetic attraction device according to claim 1, characterized in that, The mounting component (2) includes an upper surface (21) and a lower surface (22), and the mounting space (23) is a groove structure (232) formed on the upper surface (21).

9. A magnetic attraction device according to claim 1, characterized in that, The installation space (23) and the permanent magnet (1) correspond one-to-one.

10. A magnetic attraction device according to claim 1, characterized in that, The mounting component (2) is elongated, and the plurality of permanent magnets (1) are distributed along the length of the mounting component (2).

11. A magnetic attraction device according to claim 1, characterized in that, The mounting component (2) includes an upper surface (21) and a lower surface (22). Each permanent magnet (1) includes a first magnetic end (11) and a second magnetic end (12). The first magnetic end (11) and the second magnetic end (12) have opposite polarities. The first magnetic end (11) of the plurality of permanent magnets (1) is disposed facing the upper surface (21), and the second magnetic end (12) of the plurality of permanent magnets (1) is disposed facing the lower surface (22).

12. A magnetic attraction device according to claim 1, characterized in that, The mounting component (2) is a magnetically conductive metal plate, and the permanent magnet (1) is a neodymium iron boron magnet or a ferrite magnet.

13. A magnetic attraction device according to claim 1, characterized in that, It also includes an adhesive layer (3) which is attached to the mounting component (2).

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