Magnetic driving device

Abstract

The utility model discloses a magnetic driving device, which comprises a permanent magnet I, a permanent magnet II and a permanent magnet III which are longitudinally arranged, the transmission shaft penetrates through the permanent magnet I and is fixedly inserted into the middle end of the permanent magnet II; a through groove capable of accommodating the transmission shaft is formed in the middle end of the permanent magnet I; the coil I is wound clockwise, and the coil II is wound anticlockwise; according to the utility model, through the interaction of magnetic fields in different directions generated by the two coils and the permanent magnet, the pulling force and the pushing force are generated, and bidirectional pushing is realized.

Description

Technical Field

[0001] This utility model relates to the field of power drive technology, specifically to a magnetic drive device. Background Technology

[0002] A magnetic drive device is a power transmission device that utilizes the interaction of magnetic fields. Based on modern magnetic theory, it applies the magnetic force generated by permanent magnets or electromagnets to achieve contactless transmission of force or torque. Through the attraction and repulsion of magnetic fields, it enables moving parts to move freely without contact friction, thus achieving efficient and low-energy power transfer.

[0003] In existing technologies, the up-and-down movement of a drive shaft can be achieved by combining the electromagnetic force of two coils of two longitudinally arranged permanent magnets, thus realizing magnetic drive. This magnetic system is highly operable and suitable for common small household appliances and toys that require dynamic control. However, in the above structure, the reset of the drive shaft usually relies on a spring at the bottom or gravity reinforcement at the top. This results in imprecise reset of the drive shaft in actual use, and noise and slight vibration will occur after long-term use, indicating room for technological improvement. Utility Model Content

[0004] The present invention aims to solve the above-mentioned technical problems of existing magnetic drive devices having non-smooth reset, resulting in noise and slight vibration, and provides a magnetic drive device.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a magnetic driving device, comprising a first permanent magnet, a second permanent magnet, and a third permanent magnet arranged longitudinally; and further comprising:

[0006] Drive shaft; the drive shaft passes through permanent magnet one and is fixedly inserted into the middle end of permanent magnet two; permanent magnet one is annular and has a through groove in the middle end that can accommodate the drive shaft;

[0007] Support frame; located outside permanent magnet one, permanent magnet two, and permanent magnet three, with the outer sides of permanent magnet one and permanent magnet three being fixedly connected to the support frame;

[0008] Coil 1 and Coil 2; Coil 1 is wound clockwise and located on the outside of the support frame near the permanent magnet; Coil 2 is wound counterclockwise and located on the outside of the support frame near the permanent magnet.

[0009] The shell is located outside the supporting frame, with several strip grooves on its bottom surface and several heat dissipation fins on its outer side.

[0010] Furthermore, the permanent magnet one, permanent magnet two, and permanent magnet three are each composed of a mounting frame and several permanent magnet blocks, which are arranged in a circular pattern on the mounting frame.

[0011] Furthermore, the permanent magnet three is annular with a through groove two in the middle.

[0012] Furthermore, the support frame is made of plastic material; the support frame extends through both the upper and lower ends, and has several rectangular through slots on its outer side.

[0013] Furthermore, the support frame is provided with limiting necks near both the upper and lower ends; the permanent magnet II is able to move between the two limiting necks.

[0014] Furthermore, a linear bearing is provided at the upper end of the housing; a linear bearing extends from the upper end of the drive shaft.

[0015] The advantages of this utility model compared with the prior art are as follows:

[0016] The interaction between the magnetic fields generated by the two coils in different directions and the permanent magnet produces pulling and pushing forces, achieving bidirectional propulsion. Compared with unidirectional drive and mechanical reset, it can operate more smoothly and achieve precise push and pull. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0019] Figure 3 This is an exploded view of the internal structure of this utility model.

[0020] As shown in the figure: 1. Permanent magnet one, 2. Permanent magnet two, 3. Magnet three, 4. Mounting bracket, 5. Permanent magnet block, 6. Drive shaft, 7. Coil one, 8. Coil two, 9. Support frame, 10. Rectangular through slot, 11. Limiting neck, 12. Housing, 13. Strip groove, 14. Linear bearing, 15. Heat dissipation fins. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings.

[0022] Example 1, in conjunction with Appendix Figure 2 , 3 A magnetic drive device includes a longitudinally arranged permanent magnet 1, a permanent magnet 2, and a permanent magnet 3; each of the permanent magnet 1, permanent magnet 2, and permanent magnet 3 is composed of a mounting frame 4 and a number of permanent magnet blocks 5. The permanent magnet blocks 5 are arranged in a circle on the mounting frame 4. The arrangement of multiple permanent magnet blocks 5 can avoid the problem of insufficient magnetic force and weak thrust.

[0023] Furthermore, permanent magnet 1 has its N pole pointing downwards and its S pole pointing upwards; permanent magnet 2 has its N pole pointing upwards and its S pole pointing downwards; permanent magnet 3 has its S pole pointing upwards and its N pole pointing downwards; so that they can form mutual repulsion between each other.

[0024] Combined with appendix Figure 1 , 2 3. It also includes a drive shaft 6, which can be made of lightweight, non-magnetic materials such as aluminum alloy or carbon fiber. The drive shaft 6 passes through permanent magnet 1 and is fixedly inserted into the middle of permanent magnet 2, so that permanent magnet 2 can drive the drive shaft 6 to move up and down. It should be noted that permanent magnet 1 is annular and has a through groove in the middle that can accommodate the drive shaft 6. The drive shaft 6 does not contact the through groove. Permanent magnet 3 is annular and has a through groove 2 in the middle.

[0025] Combined with appendix Figure 2 , 3 It also includes coil 7 and coil 8; coil 7 is wound clockwise and is located outside the support frame 9 mentioned below and close to permanent magnet 1; coil 8 is wound counterclockwise and is located outside the support frame 9 and close to permanent magnet 3; coil 7 and coil 8 can provide current in different directions;

[0026] In the default state, the N pole of the permanent magnet 2 fixed to the drive shaft 6 repels the N pole of the upper permanent magnet 1, and the S pole repels the S pole of the lower permanent magnet 3, forming a balance. After energizing, the balance can be broken by switching the coil current and driving the drive shaft to move up and down. Specifically, when the current of coil 7 is greater than that of coil 8, the repulsive force at the upper end of the permanent magnet 2 on the outside of the drive shaft 6 decreases and the attractive force at the lower end increases, which reduces the resistance of the N pole of permanent magnet 2 and causes the drive shaft 6 to move upward; otherwise, it moves downward.

[0027] Support frame 9 is located outside permanent magnet 1, permanent magnet 2, and permanent magnet 3. The outer sides of permanent magnet 1 and permanent magnet 3 are fixed to the support frame 9, which provides support for them. The support frame 9 is made of plastic material with good insulation. The support frame 9 is penetrating at both the top and bottom, and has several rectangular through slots 10 on its outer side to reduce the covering of the internal structure and facilitate the dissipation of excess heat and gas. The support frame 9 has limiting necks 11 near the top and bottom, allowing permanent magnet 2 to move between the two limiting necks 11, thus limiting the movement of permanent magnet 2.

[0028] Combined with appendix Figure 1 It also includes a housing 12 located outside the support frame 9. Its bottom surface is provided with several strip grooves 13 to facilitate the dispersal of heat and gas during the working process. The outer side is provided with several heat dissipation fins 15 and wiring terminals. A linear bearing 14 is provided at the upper end of the housing 12. A linear bearing 14 extends from the upper end of the drive shaft 6. The linear bearing 14 can make the movement of the drive shaft 6 more stable and form a support between the drive shaft 6 and the housing 12.

[0029] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A magnetic drive device, characterized in that: It includes three permanent magnets arranged vertically: permanent magnet one (1), permanent magnet two (2), and permanent magnet three (3); it also includes: Drive shaft (6); the drive shaft (6) passes through permanent magnet one (1) and is fixedly inserted into the middle end of permanent magnet two (2); the permanent magnet one (1) is annular and has a through groove in the middle end that can accommodate the drive shaft (6); Support frame (9); located outside permanent magnet one (1), permanent magnet two (2), and permanent magnet three (3), wherein the outer sides of permanent magnet one (1) and permanent magnet three (3) are fixed to the support frame (9); Coil 1 (7) and Coil 2 (8); Coil 1 (7) is wound clockwise and is located on the outside of the support frame (9) near permanent magnet 1 (1); Coil 2 (8) is wound counterclockwise and is located on the outside of the support frame (9) near permanent magnet 3 (3); The shell (12) is located outside the support frame (9), and its bottom surface is provided with several strip grooves (13), and its outer side is provided with several heat dissipation fins (15).

2. The magnetic drive device according to claim 1, characterized in that: The permanent magnet one (1), permanent magnet two (2), and permanent magnet three (3) are all composed of a mounting frame (4) and several permanent magnet blocks (5), and the permanent magnet blocks (5) are arranged in a circle on the mounting frame (4).

3. The magnetic drive device according to claim 1, characterized in that: The permanent magnet three (3) is annular, with a through groove two in the middle.

4. A magnetic drive device according to claim 1, characterized in that: The support frame (9) is made of plastic material; the support frame (9) is penetrated at both the top and bottom, and has several rectangular through slots (10) on the outside.

5. A magnetic drive device according to claim 4, characterized in that: The support frame (9) is provided with limiting necks (11) near the upper and lower ends; the permanent magnet (2) can move between the two limiting necks (11).

6. A magnetic drive device according to claim 1, characterized in that: The upper end of the housing (12) is provided with a linear bearing (14); the upper end of the transmission shaft (6) extends out of the linear bearing (14).

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