Magnetic circuit structure and magnetic lamp holder

Abstract

This utility model discloses a magnetic circuit structure and a magnetic lamp holder, which includes a magnetic circuit structure and a mounting base. The magnetic circuit structure includes a magnetic sleeve, a magnetic core, and a magnet. The magnetic sleeve is fitted over the magnetic core, and the inner wall of the magnetic sleeve and the outer wall of the magnetic core form a vertically through mounting cavity. The magnet is disposed in the mounting cavity and is magnetized radially. The side wall of the magnetic sleeve has a notch that extends axially along the magnetic sleeve. Thus, through the design of the magnetic circuit structure, the radially magnetized magnet and the notched magnetic sleeve work together to quickly form a strong adsorption on the metal surface when the lamp holder is in actual use. This is convenient and quick, eliminating the need for drilling, brackets, or other complex operations. The lamp holder can be placed on a metal surface to complete the installation, which improves installation efficiency compared to traditional installation methods.

Description

Technical Field

[0001] This utility model relates to the field of lighting fixtures, and in particular to a magnetic circuit structure and a magnetic lamp holder. Background Technology

[0002] Modern lighting fixtures include home lighting, commercial lighting, industrial lighting, road lighting, landscape lighting, and special lighting.

[0003] For example, in industrial production environments, industrial LED lights are key lighting equipment, and the ease of installation and adsorption stability of their lamp holders have a significant impact on production efficiency and maintenance costs. Traditional industrial LED lamp holders mostly rely on bolt fastening and bracket fixing, which have many drawbacks.

[0004] However, lamp holders using conventional magnetic structures also reveal a series of problems that cannot be ignored in practical applications: First, the magnetic circuit design is crude, resulting in insufficient and unevenly distributed attraction force. Conventional magnetic lamp holders often simply embed ordinary magnets, and the magnetic sleeve is usually a complete ring structure. Magnetic lines of force are prone to forming loops inside the magnetic sleeve, resulting in a weak external effective magnetic field strength and difficulty in generating sufficient attraction force. Even if some lamp holders can achieve attraction, their magnetic field distribution is extremely uneven, and the contact area between the lamp holder and the metal surface is subjected to uneven force. Under the frequent vibration of industrial equipment and the impact of external forces generated by mechanical operation, local loosening or overall detachment is likely to occur, seriously affecting the stability of lighting and production safety.

[0005] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0006] In view of this, the present invention addresses the deficiencies of the existing technology, and its main purpose is to provide a magnetic circuit structure and a magnetic lamp holder. Through the design of the magnetic circuit structure, the radially magnetized magnet and the notched magnetic sleeve are designed in concert. When the lamp holder is actually used, the magnetic circuit structure can quickly form a strong adsorption on the metal surface, which is convenient and quick, without the need for drilling, brackets and other complicated operations. The lamp holder can be placed on the metal surface to complete the installation. Compared with the traditional installation method, the installation efficiency is improved.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A magnetic circuit structure includes a magnetic sleeve, a magnetic core, and a magnet. The magnetic sleeve is sleeved over the magnetic core, and the inner wall of the magnetic sleeve and the outer wall of the magnetic core form a vertically through mounting cavity.

[0009] The magnet is disposed in the mounting cavity and is magnetized radially; the side wall of the magnetic sleeve is provided with a notch, which extends axially along the magnetic sleeve and is used to enhance the magnetic field strength at the end of the magnetic core.

[0010] As a preferred embodiment, the sidewall of the magnetic sleeve has at least two notches, which extend along the axial direction of the magnetic sleeve and are circumferentially spaced.

[0011] As a preferred embodiment, the sidewall of the magnetic sleeve has four notches, which extend along the axial direction of the magnetic sleeve and are circumferentially spaced.

[0012] As a preferred embodiment, the magnet includes at least a first magnetic block and a second magnetic block. The first and second magnetic blocks are arranged in a circumferential array within the mounting cavity along the magnetic core, and the radial end faces of adjacent magnetic blocks are in close contact with each other. This circumferential close contact design makes the magnetic lines of force more concentrated along the radial direction of the magnetic core, reducing circumferential magnetic leakage.

[0013] As a preferred embodiment, the magnet is a neodymium iron boron magnet.

[0014] As a preferred embodiment, the magnetic core and magnetic sleeve are made of steel.

[0015] A magnetic lamp holder includes a mounting base and a magnetic circuit structure, wherein the magnetic circuit structure is any one of the magnetic circuit structures described above; the mounting base is provided with a mounting cavity, the magnetic circuit structure is installed in the mounting cavity, and at least a portion of the magnetic sleeve and the magnetic core are exposed outside the mounting base.

[0016] As a preferred embodiment, the mounting cavity is provided with a first hollow portion and a second hollow portion corresponding to the magnetic sleeve and the magnetic core, respectively. The first hollow portion is arranged along the outer periphery of the second hollow portion. When the magnetic circuit structure is installed and positioned in the mounting cavity, at least part of the bottom end of the magnetic sleeve and the magnetic core is exposed outside the mounting base through the corresponding first hollow portion and the second hollow portion.

[0017] As a preferred embodiment, the mounting cavity is further provided with several limiting parts, which are arranged at circumferential intervals along the mounting cavity. When the magnetic circuit structure is installed and positioned in the mounting cavity, the limiting parts are respectively located outside the magnetic sleeve.

[0018] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly achieves this through the design of the magnetic circuit structure. The side wall of the magnetic sleeve is provided with a notch, which extends along the axial direction of the magnetic sleeve. In this way, the notch is used to disrupt the closed magnetic circuit of the magnetic sleeve, thereby changing the distribution path of the magnetic lines of force in the magnetic sleeve and enhancing the magnetic field strength at the end of the magnetic core. This allows the magnetic core to remain stably adsorbed onto the metal surface even under industrial vibration and external force interference, preventing the lamp holder from falling off and ensuring continuous lighting and operational safety.

[0019] Secondly, by utilizing the synergistic design of radially magnetized magnets and notched magnetic sleeves, the magnetic circuit structure can quickly form a strong adsorption on the metal surface during actual use of the lamp holder. This is convenient, quick, and eliminates the need for complex operations such as drilling and brackets. The lamp holder can be placed on the metal surface to complete the installation, which improves installation efficiency compared to traditional installation methods.

[0020] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0021] Figure 1 This is a perspective view of the magnetic circuit structure of an embodiment of this utility model;

[0022] Figure 2 This is an exploded view of the magnetic circuit structure of an embodiment of this utility model;

[0023] Figure 3 This is another exploded view of the magnetic circuit structure of an embodiment of this utility model;

[0024] Figure 4 This is a perspective view of an embodiment of the present utility model;

[0025] Figure 5 This is another perspective view of an embodiment of the present utility model;

[0026] Figure 6 This is an exploded view of an embodiment of the present utility model;

[0027] Figure 7 This is another exploded view of an embodiment of the present utility model;

[0028] Figure 8 This is a magnetic field simulation analysis diagram of a magnetic attraction structure in traditional technology where the magnetic core does not protrude from the bottom surface;

[0029] Figure 9 This is a magnetic field simulation analysis diagram of the magnetic attraction structure without cuts in the magnetic sleeve in traditional technology;

[0030] Figure 10 This is a magnetic field simulation analysis diagram of the magnetic attraction structure with two cuts in the magnetic sleeve in traditional technology;

[0031] Figure 11 This is a magnetic field simulation analysis diagram of the magnetic attraction structure of the four cuts in the magnetic sleeve in an embodiment of this utility model;

[0032] Figure 12 This is a magnetic field simulation analysis diagram of the magnetic attraction structure with six notches in the magnetic sleeve in traditional technology.

[0033] Explanation of reference numerals in the attached diagram:

[0034] 1. Magnetic sleeve; 11. Notch

[0035] 12. Mounting cavity 2, magnetic core

[0036] 3. Magnet 31, First Magnetic Block

[0037] 32. Second magnetic block 4. Mounting component

[0038] 5. Mounting base; 6. Magnetic circuit structure

[0039] 51. First hollowed-out section 52. Second hollowed-out section

[0040] 53. Limiting part; 54. Mounting cavity. Detailed Implementation

[0041] Please refer to Figures 1 to 12 As shown, it illustrates the specific structure of an embodiment of the present invention.

[0042] In the description of this utility model, it should be noted that the directional terms such as "up", "down", "front", "back", "left", and "right" indicate the orientation and positional relationship based on the accompanying drawings or the orientation or positional relationship shown when wearing and using the device normally. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0043] A magnetic circuit structure includes a magnetic sleeve 1, a magnetic core 2, and a magnet 3.

[0044] Preferably, the magnetic core 2 and the magnetic sleeve 1 are made of steel. Preferably, the magnet 3 is a neodymium iron boron magnet.

[0045] The magnetic sleeve 1 is sleeved outside the magnetic core 2. The side wall of the magnetic sleeve 1 is provided with a notch 11. The notch 11 extends along the axial direction of the magnetic sleeve 1. The notch 11 is used to disrupt the closed magnetic circuit of the magnetic sleeve 1, thereby changing the distribution path of the magnetic lines of force in the magnetic sleeve 1 and enhancing the magnetic field strength at the end of the magnetic core 2.

[0046] The presence of the cut will cause the magnetic lines of force to be highly concentrated at the end of the magnetic core 2 and in the area near the cut. Taking an industrial LED lamp holder as an example: the end of the magnetic core 2 is the key area for the lamp holder to adsorb the metal surface. The cut forces more magnetic lines of force to converge here, which increases the magnetic field strength in this area. This focusing effect makes the contact point of the lamp holder stronger and the adsorption more stable when it is adsorbed, which is suitable for the needs of vibration and external interference in industrial scenarios.

[0047] After the cut breaks the short circuit of the magnetic sleeve 1, the magnetic lines of force will flow orderly along the axial and radial directions of the magnetic core 2, forming a synergistic effect of magnetic core 2 focusing magnetism + cut controlling magnetism, making the external magnetism more precise and stronger. By breaking the magnetic short circuit of the magnetic sleeve 1 and reconstructing the magnetic line of force path, the magnetic lines of force generated by the magnet 3 can act more efficiently on the outside (such as adsorbing metal lamp holders), thereby achieving the effect of enhancing the external magnetism.

[0048] The inner wall of the magnetic sleeve 1 and the outer wall of the magnetic core 2 form a vertically through mounting cavity 12. The magnet 3 is disposed within the mounting cavity 12 and is magnetized radially. Preferably, the magnet 3 includes at least a first magnetic block 31 and a second magnetic block 32, which are arranged in a circumferential array within the mounting cavity 12 along the magnetic core 2. The radial end faces of adjacent magnetic blocks are in close contact with each other, and the circumferential close contact design makes the magnetic lines of force more concentrated radially along the magnetic core 2, reducing circumferential magnetic leakage. In this embodiment, the magnet 3 can be composed of multiple magnets 3 spliced ​​together. The appropriate number of magnetic blocks can be selected and spliced ​​together to form the magnet 3 according to actual needs.

[0049] Preferably, the sidewall of the magnetic sleeve 1 has at least two notches 11, which extend axially along the magnetic sleeve 1 and are circumferentially spaced. Preferably, the sidewall of the magnetic sleeve 1 has four notches 11, which extend axially along the magnetic sleeve 1 and are circumferentially spaced. Figure 11 As shown, it displays test data for the magnetic sleeve 1 having four notches 11 on its side wall and at least partially exposing the bottom surface of the mounting part 4. The test data was analyzed using dedicated test data software (CAE), and the magnetic attraction force on the bottom surface was found to be 331N, indicating that the strength of the bottom mounting part 4 is moderate.

[0050] The magnetic circuit structure 6 also includes a mounting component 4, which is made of plastic. The magnetic sleeve 1, the magnetic core 2, and the magnet 3 are disposed on the mounting component 4. At least a portion of the mounting component 4 corresponding to the magnetic sleeve 1 and the magnetic core 2 has clearance space.

[0051] In this embodiment, as Figure 8 As shown, it displays the magnetic field simulation analysis diagram of the magnetic attraction structure in the traditional technology where the magnetic core 2 does not protrude from the bottom surface. The test data of the magnetic core 2 not protruding from the bottom surface of the mounting part 4 is analyzed by the software (CAE) for special test data. The result shows that the magnetic attraction force of the bottom surface is 136N, which is relatively low, and the strength of the bottom mounting part 4 is relatively low.

[0052] like Figure 9As shown, it displays a magnetic field simulation analysis diagram of the magnetic attraction structure of the magnetic sleeve 1 without cutouts in the conventional technology. The magnetic core 2 does not have any cutouts, but at least part of the magnetic core 2 is exposed on the bottom surface of the mounting part 4. The test data is analyzed using dedicated test data software (CAE). The obtained bottom surface magnetic attraction force is 332N, which is relatively high, but the bottom surface mounting part 4 has low strength.

[0053] like Figure 10 As shown, it displays a magnetic field simulation analysis diagram of the magnetic attraction structure with two cuts in the magnetic sleeve 1 in the conventional technology. The magnetic core 2 has two cuts and at least part of the magnetic core 2 is exposed on the bottom surface of the mounting part 4. The test data is analyzed using dedicated test data software (CAE). The magnetic attraction force on the bottom surface is 349N, which is relatively high. However, the strength of the bottom mounting part 4 is relatively low.

[0054] like Figure 12 As shown, it displays a magnetic field simulation analysis diagram of the magnetic attraction structure with six notches 11 in the magnetic sleeve 1 in the conventional technology. The side wall of the magnetic sleeve 1 has six notches 11 and at least partially exposes the bottom surface of the mounting part 4. The test analysis was performed using dedicated test data software (CAE), and the magnetic attraction force on its bottom surface was found to be 316N. This software is a well-known test software in the field and will not be described in detail here.

[0055] A magnetic lamp holder includes a mounting base 5 and a magnetic circuit structure 6, wherein the magnetic circuit structure 6 is the magnetic circuit structure 6 described above; the mounting base 5 is provided with a mounting cavity 54, the magnetic circuit structure 6 is installed in the mounting cavity 54 and at least a portion of the magnetic sleeve 1 and the magnetic core 2 are exposed outside the mounting base 5.

[0056] Preferably, the mounting cavity 54 is provided with a first hollow portion 51 and a second hollow portion 52 corresponding to the magnetic sleeve 1 and the magnetic core 2, respectively. The first hollow portion 51 is arranged along the outer periphery of the second hollow portion 52. When the magnetic circuit structure 6 is installed and positioned in the mounting cavity 54, at least part of the bottom end of the magnetic sleeve 1 and the magnetic core 2 is exposed outside the mounting base 5 through the corresponding first hollow portion 51 and second hollow portion 52.

[0057] Preferably, the mounting cavity 54 is further provided with a plurality of limiting parts 53, which are arranged at circumferential intervals along the mounting cavity 54. When the magnetic circuit structure 6 is installed and positioned in the mounting cavity 54, the plurality of limiting parts 53 are respectively limited to the outside of the magnetic sleeve 1. The plurality of limiting parts 53 realize the limiting of the magnetic circuit structure 6, preventing it from becoming loose and affecting its use.

[0058] The key design feature of this invention lies in its magnetic circuit structure. The magnetic sleeve has a notch on its side wall, which extends along the axial direction of the sleeve. This notch disrupts the closed magnetic circuit of the sleeve, altering the distribution path of the magnetic lines of force within it. This enhances the magnetic field strength at the end of the magnetic core, ensuring stable adhesion to metal surfaces even under industrial vibrations and external interference. This prevents the lamp holder from falling off, guaranteeing continuous lighting and operational safety.

[0059] Secondly, by utilizing the synergistic design of radially magnetized magnets and notched magnetic sleeves, the magnetic circuit structure can quickly form a strong adsorption on the metal surface during actual use of the lamp holder. This is convenient, quick, and eliminates the need for complex operations such as drilling and brackets. The lamp holder can be placed on the metal surface to complete the installation, which improves installation efficiency compared to traditional installation methods.

[0060] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A magnetic circuit structure comprising a magnetic sleeve, a magnetic core, and a magnet, wherein the magnetic sleeve is fitted over the magnetic core, and the inner wall of the magnetic sleeve and the outer wall of the magnetic core form a through-cavity mounting cavity; characterized in that: The magnet is disposed in the mounting cavity and is magnetized radially; the side wall of the magnetic sleeve is provided with a notch, which extends axially along the magnetic sleeve and is used to enhance the magnetic field strength at the end of the magnetic core.

2. The magnetic circuit structure according to claim 1, characterized in that: The magnetic sleeve has at least two notches on its sidewall, which extend along the axial direction of the magnetic sleeve and are spaced apart circumferentially.

3. The magnetic circuit structure of claim 1, wherein: The magnetic sleeve has four notches on its sidewall, which extend along the axial direction of the magnetic sleeve and are spaced apart circumferentially.

4. The magnetic circuit structure of claim 1, wherein: The magnet includes at least a first magnetic block and a second magnetic block, which are arranged in a circumferential array within the mounting cavity along the magnetic core, and the radial end faces of adjacent magnetic blocks are in contact with each other.

5. The magnetic circuit structure of claim 1, wherein: The magnet is a neodymium iron boron magnet.

6. The magnetic circuit structure of claim 1, wherein: The magnetic core and magnetic sleeve are made of steel.

7. A magnetic light socket, characterized by: It includes a mounting base and a magnetic circuit structure, wherein the magnetic circuit structure is the magnetic circuit structure according to any one of claims 1 to 6; the mounting base is provided with a mounting cavity, the magnetic circuit structure is installed in the mounting cavity and at least a portion of the magnetic sleeve and the magnetic core are exposed outside the mounting base.

8. The magnetic lamp stand of claim 7, wherein: The mounting cavity is provided with a first hollow part and a second hollow part corresponding to the magnetic sleeve and the magnetic core, respectively. The first hollow part is arranged along the outer periphery of the second hollow part. When the magnetic circuit structure is installed and positioned in the mounting cavity, at least part of the bottom end of the magnetic sleeve and the magnetic core is exposed outside the mounting base through the corresponding first hollow part and the second hollow part.

9. The magnetic lamp stand of claim 7, wherein: The mounting cavity is also provided with several limiting parts, which are arranged at circumferential intervals along the mounting cavity. When the magnetic circuit structure is installed and positioned in the mounting cavity, the limiting parts are respectively limited to the outside of the magnetic sleeve.

Images