Novel magnetic field generator and magnetic field therapeutic apparatus

Abstract

The invention provides a novel magnetic field generator and a magnetic field therapeutic apparatus, the magnetic field generator is applied to the magnetic field therapeutic apparatus, and the magnetic field generator comprises a stator assembly, a rotor assembly and an electric control module; the rotor assembly comprises at least one rotor; the at least one rotor is rotatably arranged on the stator assembly; the stator assembly comprises a coil assembly; the position of the coil assembly corresponds to the position of the rotor; the coil assembly is capable of controlling at least one rotor to rotate each rotor forward or backward. In the embodiment of the invention, at least one rotor can be rotationally supported through the stator assembly, the coil assembly can be controlled through the electric control module to drive the at least one rotor on the stator assembly to rotate forwards or reversely, and finally accurate control over the alternating magnetic field is achieved. According to the magnetic field generator, a motor structure contained in an existing magnetic field generator is omitted, high integration of the magnetic field generator is achieved, space and resources are saved, and weight reduction of equipment is achieved.

Description

Technical Field

[0001] This application relates to the field of magnetic field therapy technology, specifically to a novel magnetic field generator and magnetic field therapy device. Background Technology

[0002] Magnetic field therapy devices originate from the combination of traditional Chinese medicine's magnetic therapy theory and modern biomagnetism. Early devices utilized static magnetic fields from permanent magnets. Technological evolution has led to the development of electronic devices that generate dynamic magnetic fields such as alternating and pulsed fields. These magnetic fields, with specific intensities and frequencies, act on human tissues to promote blood circulation, relieve pain, and accelerate tissue repair. The core development lies in the precise controllability of the magnetic field and improvements in targeted technology.

[0003] There are several magnetic field therapy devices on the market that are designed for medical human treatment. These devices often use a motor to drive a coil stator and a permanent magnet rotor to generate a magnetic field. The design of these devices is quite complex, occupies a large amount of space, and results in a waste of space and resources. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention discloses a novel magnetic field generator and magnetic field therapy device, which improves upon the existing technology where magnetic field therapy devices often use a motor to drive a coil stator and a permanent magnet rotor to generate a magnetic field. This design is cumbersome, occupies a large space, and causes a waste of space and resources.

[0005] To achieve the above objectives, this application provides a novel magnetic field generator for use in a magnetic field therapy device, and includes a stator assembly, a rotor assembly, a coil assembly, and an electronic control module;

[0006] The rotor assembly includes at least one rotor; the at least one rotor is rotatably mounted on the stator assembly;

[0007] The coil assembly is electrically connected to the electronic control module;

[0008] The position of the coil assembly corresponds to the position of the rotor assembly; the coil assembly can drive the at least one rotor under the control of the electronic control module to make each rotor rotate in the forward or reverse direction.

[0009] In one possible embodiment, the stator assembly includes at least one mounting slot corresponding one-to-one with the at least one rotor;

[0010] Each rotor is rotatably mounted in its corresponding mounting slot.

[0011] In one possible embodiment, the structure of each rotor and the mounting slot corresponding to each rotor are aligned.

[0012] In one possible embodiment, the coil assembly includes a coil and a coil tray;

[0013] The coil is located inside the coil tray; the stator assembly is connected to the coil tray.

[0014] In one possible embodiment, the coil is a PCB coil.

[0015] In one possible embodiment, the PCB coil is a coil structure made of six stacked PCB boards.

[0016] In one possible embodiment, the coil assembly includes a bearing.

[0017] In one possible embodiment, the bearing is disposed on the side of the coil tray away from the coil.

[0018] On the other hand, this application discloses a magnetic field therapy device, which includes any of the magnetic field generators mentioned above.

[0019] The technical solution provided in this application has the following technical effects:

[0020] First, in the embodiments of this application, at least one rotor can be rotated and supported by a stator assembly, and the coil assembly can be controlled by an electronic control module to drive at least one rotor on the stator assembly to rotate forward or backward and at a specific rotational speed, ultimately achieving precise control of the alternating magnetic field. The magnetic field generator in this application eliminates the motor structure found in existing magnetic field generators, achieving a high degree of integration, saving space and resources, and reducing the weight of the equipment.

[0021] Second, the axial dimension of the magnetic field generator in this application is much smaller than the radial dimension, thus optimizing the structure and making it more suitable for applications with small volume and low mass.

[0022] Third, once the magnetic field generator in this application is finalized, it can be mass-produced in large batches using the mature PCB manufacturing industry, which further saves manufacturing costs and saves manpower and resources. Attached Figure Description

[0023] To more clearly illustrate the technical solutions and advantages in the embodiments of this application 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1This is a schematic diagram of the structure of a magnetic field generator provided in an embodiment of this application. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the structure of a magnetic field generator with the rotor structure hidden, provided in an embodiment of this application;

[0026] Figure 3 This is a schematic diagram of the structure of a magnetic field generator provided in an embodiment of this application. Figure 2 ;

[0027] Figure 4 This is a schematic diagram of the structure of a magnetic field generator provided in an embodiment of this application. Figure 3 ;

[0028] Figure 5 This is a schematic diagram of the structure of a magnetic field generator provided in this application after the stator assembly and rotor assembly are hidden;

[0029] Figure 6 This is a schematic diagram of the PCB board structure of the coil of a magnetic field generator provided in an embodiment of this application. Figure 1 ;

[0030] Figure 7 This is a schematic diagram of the PCB board structure of the coil of a magnetic field generator provided in an embodiment of this application. Figure 2 ;

[0031] Figure 8 This is a schematic diagram of the PCB board structure of the coil of a magnetic field generator provided in an embodiment of this application. Figure 2 ;

[0032] Figure 9 This is a schematic diagram of the PCB board structure of the coil of a magnetic field generator provided in an embodiment of this application. Figure 4 ;

[0033] Figure 10 This is a schematic diagram of the PCB board structure of the coil of a magnetic field generator provided in an embodiment of this application. Figure 5 ;

[0034] Figure 11 This is a schematic diagram of the PCB board structure of the coil of a magnetic field generator provided in an embodiment of this application. Figure 6 ;

[0035] Figure 12 This is a schematic diagram of a drive circuit for a magnetic field generator provided in an embodiment of this application;

[0036] The labels in the diagram are explained as follows:

[0037] 1-Stator assembly; 11-Mounting slot; 2-Rotor assembly; 21-Rotor; 3-Coil assembly; 31-Coil; 32-Coil tray; 33-Bearing. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0039] It should be noted that the term "an embodiment" or "embodiment" in the specification of the embodiments of this application refers to a specific feature, structure, or characteristic that can be included in at least one implementation of this application. It should be understood that in the specification, claims, and accompanying drawings of the embodiments of this application, the terms "upper," "lower," "top," "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0040] Please see Figures 1 to 12 This application provides a novel magnetic field generator for use in a magnetic field therapy device, and includes a stator assembly 1, a rotor assembly 2, a coil assembly 3, and an electronic control module. The rotor assembly 2 can be used to generate an alternating magnetic field in space under a magnetic field, thereby achieving a magnetic field therapy effect.

[0041] In one possible embodiment, the rotor assembly 2 may include at least one rotor 21, which is rotatably mounted on the stator assembly 1. The rotor 21 is used to drive a permanent magnet to cut magnetic field lines to form an alternating magnetic field.

[0042] Optionally, the coil assembly 3 can be electrically connected to the electronic control module. The coil assembly 3, under the control of the electronic control module of the magnetic field generator, can drive the permanent magnet on the rotor 21 to rotate, thereby generating an alternating magnetic field. The position of the coil assembly 3 can correspond to the position of the rotor 21; the coil assembly 3 can be positioned on the upper or lower side of the rotor 21. Specifically, the coil assembly 3 can control at least one rotor 21 to rotate in either the forward or reverse direction, ultimately achieving precise control of the frequency, intensity, and direction of the alternating magnetic field.

[0043] In the embodiments of this application, at least one rotor 21 can be rotated and supported by the stator assembly 1. The coil assembly 3 can be controlled by the electronic control module to drive at least one rotor 21 on the stator assembly 1 to rotate forward or backward and at a specific rotational speed, ultimately achieving precise control of the alternating magnetic field. The magnetic field generator in this application eliminates the motor structure contained in existing magnetic field generators, achieving a high degree of integration of the magnetic field generator, saving space and resources, and reducing the weight of the equipment.

[0044] Meanwhile, the axial dimension of the magnetic field generator in this application is much smaller than the radial dimension, thus optimizing the structural design and making it more suitable for small-volume, low-weight application scenarios. After the design of the magnetic field generator in this application is finalized, it can be mass-produced in large batches using the mature PCB manufacturing industry, further saving manufacturing costs and saving manpower and material resources.

[0045] In one possible embodiment, such as Figure 2 As shown, the stator assembly 1 includes at least one mounting slot 11 corresponding to at least one rotor 21, and each rotor 21 is rotatably disposed in the mounting slot 11 corresponding to each rotor 21, thereby enabling the stator assembly 1 to provide rotational support for at least one rotor 21, thereby forming an alternating magnetic field.

[0046] In one possible embodiment, the structure of each rotor 21 and the mounting groove 11 corresponding to each rotor 21 are corresponding, the shape of each rotor 21 and the mounting groove 11 corresponding to each rotor 21 can be the same, and the size of each rotor 21 can be equal to or slightly smaller than the size of the mounting groove 11 corresponding to each rotor 21, thereby achieving a precise connection.

[0047] In one possible embodiment, such as Figure 5 As shown, the coil assembly 3 includes a coil 31 and a coil tray 32. In this application, the coil 31 can be a coil structure formed by stacking several layers of PCB boards, and the coil 31 can be located inside the coil tray 32. The stator assembly 1 is connected to the coil tray 32, and the stator assembly 1 can be fixedly mounted on the coil tray 32. The coil 31 is used to control the forward or reverse rotation of each rotor 21 under the control of the electronic control module.

[0048] In one possible embodiment, coil 31 is a PCB coil, which can be a coil structure composed of several layers of PCB boards stacked together. Therefore, the use of PCB technology to fabricate coil 31 in this application ensures a high degree of consistency and accuracy in coil shape, size, and position, avoids errors caused by manual winding, and is also beneficial for large-scale and batch production of the magnetic field generator.

[0049] The PCB coil also has low inductance, which enables the motor to achieve higher electrical frequencies and faster response speeds.

[0050] In one possible embodiment, the PCB coil is a coil structure made up of six stacked PCB layers. This six-layer PCB structure allows for the embedding of large power and ground layers so that the copper layers can act as effective heat sinks, rapidly conducting the Joule heat generated by the coil 31 to the motor housing or the external environment.

[0051] Optional, such as Figures 6 to 11 As shown, the coil structure formed by stacking six PCB layers in this application can adopt a Y-shaped connection method. The Y-shaped connection coil structure in this application has many advantages, such as compatibility with SPWM control, natural suppression of zero-sequence harmonics, better suitability for high-speed operation, and enhanced safety.

[0052] In one possible embodiment, the coil assembly 3 includes a bearing 33, which can be coaxially arranged with the coil tray 32. The bearing 33 in this application couples the coil assembly 3, the stator assembly 1, and the rotor assembly 2 together, thereby supporting the rotor assembly 2 and enabling the rotor 21 to rotate with low friction.

[0053] In one possible embodiment, the rotor assembly 2 may include two rotors 21. The stator assembly 1 may provide rotational support for the two rotors 21, thereby generating an alternating magnetic field.

[0054] On the other hand, this application discloses a magnetic field therapy device, which includes any of the magnetic field generators mentioned above.

[0055] Optionally, the magnetic field generator and magnetic field therapy device in this application can be based on, for example... Figure 12 The driving circuit shown is used for driving. Figure 12 The drive circuit shown uses three high-side MOS drivers to achieve 120° commutation, thereby generating three rectangular waveforms with a phase difference of 120°, causing the rotor 21 to deflect according to the 120° phase difference.

[0056] It should be noted that the order of the embodiments described above is merely for descriptive purposes and does not represent the superiority or inferiority of the embodiments. Furthermore, specific embodiments have been described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps described in the claims can be performed in a different order than that shown in the embodiments and still achieve the desired result. Additionally, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0057] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the device embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

Claims

1. A novel magnetic field generator, characterized in that, It is used in magnetic field therapy devices and includes a stator assembly, a rotor assembly, a coil assembly, and an electronic control module; The rotor assembly includes at least one rotor; the at least one rotor is rotatably mounted on the stator assembly; The coil assembly is electrically connected to the electronic control module; The position of the coil assembly corresponds to the position of the rotor assembly; the coil assembly can drive the at least one rotor under the control of the electronic control module to make each rotor rotate in the forward or reverse direction.

2. The magnetic field generator according to claim 1, characterized in that, The stator assembly includes at least one mounting slot corresponding to each of the at least one rotor; Each rotor is rotatably mounted in its corresponding mounting slot.

3. The magnetic field generator according to claim 2, characterized in that, Each rotor and its corresponding mounting slot have a corresponding structure.

4. The magnetic field generator according to claim 1, characterized in that, The coil assembly includes a coil and a coil tray; The coil is located inside the coil tray; the stator assembly is connected to the coil tray.

5. The magnetic field generator according to claim 4, characterized in that, The coil is a PCB coil.

6. The magnetic field generator according to claim 5, characterized in that, The PCB coil is a coil structure made up of six layers of stacked PCB boards.

7. The magnetic field generator according to claim 4, characterized in that, The coil assembly includes a bearing.

8. The magnetic field generator according to claim 7, characterized in that, The bearing is located on the side of the coil tray away from the coil.

9. The magnetic field generator according to claim 1, characterized in that, The rotor assembly includes two rotors.

10. A magnetic field therapy device, characterized in that, Including the magnetic field generator as described in any one of claims 1-9.

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