A toroidal magnetic assembly

Abstract

The utility model relates to the technical field of electronic product accessories, and specifically discloses a ring magnetic group, which comprises a release film, a plurality of axial magnets and radial magnets, at least two positioning holes for matching assembly jigs are arranged on the release film, the axial magnets are arranged on the release film in the form of combined units at intervals, and the axial magnets are integrally formed in a ring shape, each combined unit comprises at least two axial magnets arranged side by side, the radial magnets and the axial magnets are arranged at intervals along the same ring track, and the radial magnets and the combined units of the axial magnets are arranged alternately. The utility model can enhance the vertical pulling and attracting force, optimize the lateral operation experience, improve the compatibility with wireless charging interaction, solve the problems of the traditional magnetic suction support in terms of adsorption stability and operation convenience, and has high installation precision and high positioning reliability during assembly with the matching jig.

Description

Technical Field

[0001] This utility model relates to the field of electronic product accessories technology, specifically to a ring magnetic assembly. Background Technology

[0002] With the widespread adoption of wireless charging technology for smartphones, magnetic charging stands have become a mainstream accessory due to their ability to simultaneously position and secure the phone while assisting with wireless charging. Currently, most magnetic charging stands for wireless charging receivers on the market utilize a single type of ring-shaped distributed magnets in their core magnetic structure. This means that several magnets of uniform size are arranged at intervals along a ring track, relying on the magnetic force of the magnets themselves to attract the phone or wireless charger.

[0003] However, this traditional structure has significant drawbacks: First, the vertical attraction is insufficient. Due to the limited superposition effect of the magnetic fields in a single ring-shaped magnet, the magnet is prone to loosening or even falling off under the weight of the phone or unexpected external forces, failing to meet the requirement of stable fixation. Second, the ease of lateral removal is poor. In traditional structures, the magnetic field distribution of the magnets is relatively concentrated and unidirectional. When pushing the phone laterally or separating the wireless charger, strong magnetic resistance is encountered, making removal difficult. Third, the compatibility with the wireless charger is poor. Due to the lack of precise control over the direction and strength of the attraction force, it is difficult to ensure stable adhesion to the wireless charger, and it is also difficult to achieve easy separation when needed, affecting the user experience.

[0004] Furthermore, the current ring-shaped distributed magnets lack a positioning structure when assembled using a fixture, making them prone to misalignment during clamping and affecting assembly accuracy. Utility Model Content

[0005] To address the shortcomings of the existing technology, this utility model provides a ring-shaped magnetic assembly that enhances vertical attraction, optimizes lateral operation experience, improves compatibility with wireless charging, and offers high installation accuracy. When assembled with a fixture, its positioning reliability is enhanced, solving the problems of insufficient adsorption stability and ease of operation of traditional magnetic brackets, as well as the lack of precise positioning during assembly.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A ring-shaped magnetic assembly includes a release film, a plurality of axial magnets and radial magnets. The release film has at least two positioning holes for use with an assembly fixture. The axial magnets are arranged at intervals on the release film in the form of combined units and form a ring as a whole. Each combined unit contains at least two axial magnets arranged in parallel. The radial magnets are arranged at intervals along the same ring trajectory as the axial magnets and are staggered with the combined units of the axial magnets.

[0008] Preferably, the axial magnet is end-face bipolar magnetized, with the magnetization direction parallel to the annular central axis. Its end-face polarity is distributed in a concentric ring shape with the annular central axis as the axis of symmetry, with the outer ring region being the N pole and the inner ring region being the S pole.

[0009] Preferably, the radial magnet is radially magnetized, with the magnetization direction perpendicular to the central axis of the ring, and its polarity is distributed along a radial gradient, with the outer diameter side surface having the N pole and the inner diameter side surface having the S pole.

[0010] Preferably, both the axial magnet and the radial magnet are provided with a black epoxy topcoat layer.

[0011] Preferably, the axial magnet and the radial magnet are connected to the release film by release adhesive.

[0012] Preferably, the bottom of the release film is provided with a rubber-plastic magnetic conductive sheet.

[0013] The beneficial effects of this invention are as follows: The release film has at least two positioning holes for use with assembly fixtures, resulting in stronger positioning reliability and higher installation accuracy during assembly. By arranging axial magnets in at least two parallel combination units at an annular interval, and staggering them with radial magnets along the same annular trajectory, the magnetic field superposition effect is significantly enhanced, solving the problem of insufficient vertical attraction force in traditional structures. Even if the phone is subjected to gravity or accidental external force, it can still be firmly attracted, preventing loosening and falling, fully meeting the requirements for stable fixation. Simultaneously, the staggered distribution of axial and radial magnets optimizes the direction and distribution of the magnetic field, breaking the limitations of traditional concentrated and unidirectional magnetic fields. The magnetic resistance when pushing the phone laterally or separating the wireless charger is significantly reduced, making the pick-up and drop operation more effortless and convenient, improving the problem of laborious traditional operations. Furthermore, this structure can precisely control the direction and intensity of the adsorption force, ensuring stable adsorption with the wireless charger while allowing for easy separation when needed, greatly improving the interoperability between the two and optimizing the user experience. Attached Figure Description

[0014] Figure 1 : This is a structural schematic diagram of an embodiment of the present utility model;

[0015] Figure 2 This is a side view structural diagram of an embodiment of the present invention;

[0016] Figure 3 : This is a schematic diagram of the magnetic pole distribution structure according to an embodiment of the present invention;

[0017] Explanation of the symbols in the attached diagram: 10-release film, 11-axial magnet, 12-radial magnet, 13-combination unit, 14-positioning hole, 15-rubber-plastic magnetic conductive sheet, 16-ring-shaped shaping rubber ring. Detailed Implementation

[0018] To more clearly illustrate the structural features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments:

[0019] This embodiment: as follows Figure 1-3 As shown, a ring-shaped magnetic assembly includes a release film 10, an axial magnet 11, and a radial magnet 12. Both the axial magnet 11 and the radial magnet 12 are provided with a black epoxy topcoat layer. The black epoxy topcoat layer can play a role in preventing corrosion and wear to protect the axial magnet 11 and the radial magnet 12, and at the same time, it can make the appearance more regular.

[0020] Axial magnets 11 are spaced apart on release film 10 in the form of combination units 13, comprising a total of six combination units 13. Each combination unit 13 contains two axial magnets 11 arranged side by side, for a total of twelve axial magnets 11. They are connected and fixed by release adhesive and form a ring as a whole. Radial magnets 12 are spaced apart from the axial magnets 11 along the same ring track and are staggered with the combination units 13 of the axial magnets 11. There are a total of six radial magnets 12, each of which is located at the interval between adjacent combination units 13 and is connected and fixed by release adhesive, so that the axial magnets 11 and radial magnets 12 form a magnetic ring.

[0021] The axial magnet 11 is magnetized with bipolar end faces, and the magnetization direction is parallel to the annular central axis. Its end face polarity is distributed in a concentric ring shape with the annular central axis as the axis of symmetry. The outer ring region is the N pole and the inner ring region is the S pole. The radial magnet 12 is magnetized radially, and the magnetization direction is perpendicular to the annular central axis. Its polarity is distributed along the radial gradient. The outer diameter side surface is the N pole and the inner diameter side surface is the S pole, thus forming a radial closed magnetic circuit.

[0022] The release film 10 has four positioning holes 14 for use with assembly fixtures, which enhances positioning reliability and installation accuracy during assembly with fixtures. The bottom of the release film 10 has a rubber and plastic magnetic conductive sheet 15, which serves as a bottom pad for the magnetic ring. During transportation, the rubber and plastic magnetic conductive sheet 15 can prevent the magnetic ring from directly contacting other components through physical isolation and flexible buffering, preventing wear and scratches caused by direct contact, protecting the appearance and structural integrity of the magnetic ring, and reducing magnetic field leakage to prevent the magnetic ring from causing magnetic interference to surrounding sensitive components.

[0023] After the product is assembled, it must undergo surface inspection, coating adhesion test and salt spray test;

[0024] Surface appearance inspection: The surface has no obvious defects, including but not limited to scratches, paint peeling, impurities, color difference, etc.;

[0025] Coating adhesion test: The coating adhesion must meet the cross-cut adhesion test standard, and there should be no coating peeling or curling after the cross-cut is completed;

[0026] Salt spray test: At room temperature of 20±5℃, with a salinity of 5% sodium chloride solution and continuous spraying for 48 hours, the product surface must not show any defects such as rust, coating blistering, or corrosion spots after the test;

[0027] After the test is completed, the magnetic ring is fixed by 16 recyclable annular shaping rubber rings on the outer circumference of the magnetic ring, making it easy to move to the subsequent assembly station.

[0028] This product significantly enhances the magnetic field superposition effect by arranging axial magnets 11 in two parallel combined units 13 along a ring interval, and interleaving them with radial magnets 12 along the same ring trajectory. This solves the problem of insufficient vertical attraction force in traditional structures. Even if the phone is pulled by gravity or accidental external force, it can still be firmly attracted, preventing it from loosening and falling, and fully meeting the requirements for stable fixation. At the same time, the interleaved distribution of axial magnets 11 and radial magnets 12 optimizes the direction and distribution of the magnetic field, breaking the limitations of the traditional concentrated and unidirectional magnetic field. The magnetic resistance when pushing the phone laterally or separating the wireless charger is significantly reduced, making the picking and putting operation more effortless and convenient, and improving the problem of laborious operation in traditional methods. In addition, this structure can precisely control the direction and intensity of the attraction force, ensuring stable attraction with the wireless charger while allowing easy separation when needed, greatly improving the interaction and compatibility between the two and optimizing the user experience.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Therefore, any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A ring-shaped magnetic assembly, characterized in that: It includes a release film, several axial magnets and radial magnets. The release film has at least two positioning holes for use with assembly fixtures. The axial magnets are arranged on the release film in the form of combined units, forming a ring. Each combined unit contains at least two axial magnets arranged in parallel. The radial magnets are arranged at intervals along the same ring track as the axial magnets, and are staggered with the combined units of the axial magnets.

2. The annular magnetic assembly according to claim 1, characterized in that: The axial magnet is magnetized with bipolar end faces, with the magnetization direction parallel to the central axis of the ring. The polarity of the end face is distributed in a concentric ring shape with the central axis of the ring as the axis of symmetry. The outer ring region is the N pole and the inner ring region is the S pole.

3. A ring-shaped magnetic assembly according to claim 2, characterized in that: The radial magnet is radially magnetized, with the magnetization direction perpendicular to the central axis of the ring. Its polarity is distributed along a radial gradient, with the outer diameter side surface having the N pole and the inner diameter side surface having the S pole.

4. A ring-shaped magnetic assembly according to any one of claims 1-3, characterized in that: Both the axial and radial magnets are coated with a black epoxy topcoat.

5. A ring-shaped magnetic assembly according to any one of claims 1-3, characterized in that: The axial and radial magnets are connected to the release film via release adhesive.

6. A ring-shaped magnetic assembly according to any one of claims 1-3, characterized in that: The bottom of the release film is equipped with a rubber-plastic magnetic conductive sheet.

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