Lightweight topological structure electromagnetic driver

Abstract

The light-weight topological structure electromagnetic driver comprises an iron core and a plurality of coils, the iron core is of an annular body structure, the iron core comprises a circular outer wall and a plurality of arc-shaped inner walls arranged on the inner side of the circular outer wall, the arc-shaped inner walls are fixed on the inner side of the circular outer wall through a supporting frame, and the coils are arranged on the inner side of the circular outer wall. A square notch is formed in the middle of the arc-shaped inner wall, the supporting frame is opposite to the square notch, and the coil is wound on the supporting frame. According to the lightweight electromagnetic driver with the topological structure, the magnetic flux of each part of the iron core is calculated by adopting finite element simulation software for the iron core, and the material consumption of the iron core is reduced while the magnetic saturation density of the same material is realized, so that the overall mass of the electromagnetic driver can be reduced, and the driving efficiency is higher.

Description

Technical Field

[0001] The utility model relates to an electromagnetic driver with a lightweight topological structure, belonging to the technical field of electromagnetic drivers. Background Art

[0002] Existing drive mechanisms are typically motors, engines, and other mechanisms that rotate a drive shaft. Electromagnetic DC motors consist of stator poles, a rotor (armature), a commutator (commonly known as a commutator), brushes, a housing, and bearings. These motors have numerous components, are heavy, and consume a lot of energy, resulting in reduced drive efficiency. Traditional electromagnetic coil designs often face a dilemma: on the one hand, they must meet operational requirements for large size and high power output, while on the other hand, they must minimize coil weight to facilitate system integration and reduce energy consumption. Summary of the Invention

[0003] The utility model provides an electromagnetic driver with a lightweight topology structure and high driving efficiency.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] A lightweight topological electromagnetic driver includes an iron core and multiple coils. The iron core is a ring-shaped structure. The iron core includes a circular outer wall and multiple arc-shaped inner walls arranged on the inner side of the circular outer wall. The arc-shaped inner wall is fixed to the inner side of the circular outer wall through a support frame. A square notch is provided in the middle of the arc-shaped inner wall. The support frame is opposite to the square notch, and the coils are wound on the support frame.

[0006] Preferably, there are six arc-shaped inner walls and six coils.

[0007] Preferably, the arc-shaped inner walls are evenly distributed inside the circular outer wall.

[0008] Preferably, the coil is made of 1.3 mm copper enameled wire, which is wound on the support frame in a clockwise or counterclockwise order, with two strands wound together for 120 turns.

[0009] Preferably, the iron core is made of silicon steel sheet material and adopts a lightweight topological structure.

[0010] Preferably, a notch is provided on the arc-shaped inner wall.

[0011] Preferably, the notch is square, and the support frame is opposite to the notch.

[0012] Preferably, a plurality of triangular notches are provided on the circular outer wall, and the notches are triangular in shape.

[0013] Compared with the existing technology, the lightweight topology electromagnetic driver of the utility model calculates the magnetic flux at various parts of the iron core using finite element simulation software, thereby reducing the material consumption of the iron core while achieving the same material magnetic saturation density, thereby reducing the overall weight of the electromagnetic driver and improving the driving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of Example 1 of the electromagnetic driver with a lightweight topology structure of the present invention.

[0015] Figure 2 It is a three-dimensional schematic diagram of Example 2 of the electromagnetic driver with a lightweight topology structure of the present utility model.

[0016] Figure 3 This is a three-dimensional schematic diagram of Example 3 of the electromagnetic driver with a lightweight topology structure of the present utility model.

[0017] Figure 4 This is the electromagnetic finite element simulation flow chart of the lightweight topology electromagnetic drive of this utility model.

[0018] Figure 5 This is the flow chart of the topology optimization design algorithm for the electromagnetic drive with lightweight topology structure in this utility model.

[0019] Figure 6 It is an isometric view of an electromagnetic driver with pole shoes and teeth that have undergone lightweight topology optimization, provided by an embodiment of the present utility model.

[0020] Figure 7 It is an isometric diagram of an electromagnetic driver with a back iron and a pole shoe that have undergone lightweight topology optimization, provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments. Example

[0022] like Figure 1 As shown, the lightweight topology electromagnetic driver includes an iron core 1 and multiple coils 2. The iron core 1 is a ring-shaped structure. The iron core 1 includes a circular outer wall 11 and multiple arc-shaped inner walls 12 arranged on the inner side of the circular outer wall 11. The arc-shaped inner wall 12 is fixed to the inner side of the circular outer wall 11 through a support frame 13, and the coils 2 are wound on the support frame 13.

[0023] There are six arc-shaped inner walls 12 and six coils 2 , and the arc-shaped inner walls 12 are evenly distributed inside the circular outer wall 11 . Example

[0024] like Figure 2As shown, a notch 121 is provided in the middle of the arc-shaped inner wall 12 . The notch 121 is square, and the support frame 13 is opposite to the notch 121 . The notch 121 facilitates the magnetic flux of the coil 2 to pass through the arc-shaped inner wall 12 . Example

[0025] like Figure 3 As shown, a plurality of triangular notches 111 are provided on the circular outer wall 11 , and a notch 121 is provided in the middle of the arc-shaped inner wall 12 , and the notch 121 is triangular.

[0026] The coil 2 is made of 1.3 mm copper enameled wire, which is wound on each support frame 13 in a clockwise or counterclockwise order, with two strands wound together for 120 turns.

[0027] The iron core 1 is made of silicon steel sheet and adopts a lightweight topology. The magnetic flux at various locations in the iron core 1 is calculated using finite element simulation software. Then, based on the magnetic saturation density of the iron core material, the material of the iron core 1 is reduced while achieving the material's magnetic saturation density, thereby reducing the overall mass of the electromagnetic drive.

[0028] The technical solution adopted by this utility model is a lightweight topological electromagnetic driver for driving an eccentric bone extension intramedullary nail. Before topological optimization, it is necessary to establish and conduct a joint finite element simulation of the extendable intramedullary nail and the electromagnetic coil 2, and design the electromagnetic induction coil 2 to achieve the magnetic field strength required to drive the extendable intramedullary nail. The finite element simulation process is as follows: Figure 4 and Figure 5 shown.

[0029] The first step is model creation and geometry definition. Based on the given length, diameter, and magnetization method, draw the permanent magnet that will extend the interior of the intramedullary nail. Determine the geometry of Coil 2. Based on application requirements, set the inner diameter of Coil 2 and initialize its basic parameters, such as size, material, and number of turns.

[0030] The second step involves defining the physical properties and materials. The material properties for Coil 2 and the permanent magnet within the extendable intramedullary nail are selected. Coil 2 is made of silicon steel and copper wire, while the permanent magnet within the intramedullary nail is made of neodymium iron boron. Their electromagnetic properties, such as electrical conductivity and magnetic permeability, are also defined. The number of turns and winding direction for Coil 2 are determined. In this example, Coil 2 has six turns.

[0031] The third step is to set boundary conditions and initial conditions, select appropriate material properties, such as silicon steel sheets and copper wires, and define their electromagnetic properties, such as electrical conductivity and magnetic permeability.

[0032] The fourth step is meshing. Meshing the model is essential for numerical calculations. The mesh density and shape may need to be adjusted based on experience or simulation results to ensure accurate results.

[0033] The fifth step is solver setup and simulation. In the simulation software, set the electromagnetic field solver parameters, such as the time step and solution type (static or transient). Monitor key output parameters, such as magnetic field distribution and current density.

[0034] The sixth step is result analysis. This involves analyzing the simulation results to check whether the electromagnetic performance meets the design requirements. Based on the results, key parameters of Coil 2, such as the turn distribution and winding direction, are adjusted. Ultimately, an electromagnetic induction coil 2 that achieves the desired magnetic field strength is obtained, serving as the initial configuration for the lightweight topology optimization design. Example

[0035] Topology optimization aims to minimize the weight of the coil while meeting the operating requirements, thereby improving the performance and efficiency of the overall system.

[0036] Specifically, before topology optimization, it is necessary to establish and perform a joint finite element simulation of the extendable intramedullary nail and the electromagnetic coil, and to design an electromagnetic induction coil that can achieve the magnetic field strength required to drive the extendable intramedullary nail to stretch.

[0037] Specifically, the first step in setting up the simulation is model creation and geometry definition. Based on the given length, diameter, and magnetization method, draw the permanent magnet that will extend the interior of the intramedullary nail. Determine the coil geometry—in this case, a circle. Based on application requirements, set the coil's inner diameter to ensure it's larger than the radius of the patient's limb. Initialize the basic coil parameters, such as size, material, and number of turns.

[0038] Specifically, the second step in the finite element simulation involves defining physical properties and materials. The material properties for the coil and the permanent magnet within the extendable intramedullary nail are selected. In this example, the coil is made of silicon steel and copper wire, and the permanent magnet within the intramedullary nail is neodymium iron boron. Their electromagnetic properties, such as electrical conductivity and magnetic permeability, are also defined. The number of turns in the coil and the winding direction are determined. In this example, the number of turns is set to 6.

[0039] Specifically, the third step in finite element simulation is to set boundary and initial conditions. Select appropriate material properties, such as silicon steel sheet and copper wire, and define their electromagnetic properties, such as conductivity and magnetic permeability. Determine the number of turns and winding direction for the coil. In this example, the number of turns is set to 6.

[0040] Specifically, the fourth step in finite element simulation is meshing. Meshing the model is a necessary step for numerical calculations. The mesh density and shape may need to be adjusted based on experience or simulation results to ensure accurate results.

[0041] Specifically, the fifth step of finite element simulation is solver setup and simulation. In the simulation software, electromagnetic field solver parameters, such as time step and solution type (static or transient), are set. Key output parameters, such as magnetic field distribution and current density, are monitored.

[0042] Specifically, the sixth step of the finite element simulation is result analysis. This analysis verifies whether the electromagnetic performance meets the design requirements. Based on the results, coil parameters, such as the number of turns and winding direction, are adjusted, along with key parameters. Ultimately, an electromagnetic induction coil that achieves the desired magnetic field strength is obtained, serving as the initial configuration for the lightweight topology optimization design.

[0043] Specifically, the coil area that needs to be lightweight is selected, and a topology optimization algorithm, such as the variable density method or the uniform structure method, is used to set the coil weight that needs to be reduced as the optimization target while meeting the electromagnetic performance requirements. Figure 3 ), continuously adjusting the coil topology and determining whether it meets design requirements until the optimal solution is reached. This results in a weight-reduced coil structure, achieving lightweight design while maintaining high performance. Using topology optimization algorithms for lightweight design can shorten design time and conserve computing resources without relying on engineering expertise. Example

[0044] According to the finite element calculation, the number of turns, winding method, back iron thickness, height and other parameters of the initial configuration of the circular silicon steel sheet electromagnetic coil are obtained. The initial configuration is topologically optimized, and the weight reduction areas are selected as the coil teeth and pole shoes. The optimized results are as follows Figure 6 shown. Example

[0045] According to the finite element calculation, the parameters of the circular silicon steel sheet electromagnetic coil, such as the number of turns, winding method, back iron thickness, and height, are obtained. The initial configuration is topologically optimized, and the weight reduction areas are selected as the back iron and pole shoe of the coil. The optimized results are as follows: Figure 7 shown.

[0046] Figure 6 It is an isometric view of an electromagnetic driver with pole shoes and teeth that have undergone lightweight topology optimization, provided by an embodiment of the present utility model.

[0047] Figure 7 It is an isometric diagram of an electromagnetic driver with a back iron and a pole shoe that have undergone lightweight topology optimization, provided by an embodiment of the present invention.

[0048] This lightweight topology electromagnetic driver utilizes finite element simulation software to calculate the magnetic flux at each location within the core 1. This reduces the material usage while maintaining the same magnetic saturation density, thereby lowering the overall weight of the electromagnetic driver and improving drive efficiency. Firstly, the coil structure is optimized to ensure optimal electromagnetic performance within a given volume; secondly, lightweight materials and engineering techniques are employed to minimize coil weight while maintaining performance.

[0049] Finally, it should be noted that the above embodiments only illustrate the technical solutions of the present invention, rather than limiting it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A lightweight topology electromagnetic driver, characterized in that: The invention comprises an iron core (1) and a plurality of coils (2), wherein the iron core (1) is an annular structure, the iron core (1) comprises a circular outer wall (11) and a plurality of arc-shaped inner walls (12) arranged on the inner side of the circular outer wall (11), the arc-shaped inner walls (12) are fixed to the inner side of the circular outer wall (11) via a support frame (13), and the coils (2) are wound and arranged on the support frame (13).

2. The lightweight topology electromagnetic driver according to claim 1, characterized in that: There are six arc-shaped inner walls (12) and six coils (2).

3. The lightweight topology electromagnetic driver according to claim 2, characterized in that: The arc-shaped inner walls (12) are evenly spaced and distributed inside the circular outer wall (11).

4. The lightweight topology electromagnetic driver according to claim 1, characterized in that: The coil (2) uses 1.3 mm copper enameled wire, which is wound on the support frame (13) in a clockwise or counterclockwise order, with two strands wound together for 120 turns.

5. The lightweight topology electromagnetic driver according to claim 1, characterized in that: The iron core (1) is made of silicon steel sheet material and adopts a lightweight topological structure.

6. The lightweight topology electromagnetic driver according to claim 1, characterized in that: A notch (121) is provided on the arc-shaped inner wall (12).

7. The lightweight topology electromagnetic driver according to claim 6, characterized in that: The notch (121) is square, and the support frame (13) is opposite to the notch (121).

8. The lightweight topology electromagnetic driver according to claim 6, characterized in that: A plurality of triangular notches (111) are provided on the circular outer wall (11), and the notches (121) are triangular in shape.

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