Electromagnetic rotary drive

Abstract

The application discloses an electromagnetic rotary driver, which comprises a rotary shaft assembly, wherein the rotary shaft assembly comprises a rotary shaft, a first armature is arranged above the rotary shaft, a first permanent magnet is fixed to the tail end of the first armature, a stop arm is arranged below the rotary shaft, a first stop wall is arranged on one side of the stop arm, a second stop wall is arranged on the other side of the stop arm, a first electromagnet is arranged on one side of the rotary shaft, and a second electromagnet is arranged on the other side of the rotary shaft. The electromagnetic rotary driver has the advantages of simple structure, easy manufacturing, high efficiency and performance, and reduced cost.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic components, in particular to an electromagnetic rotary driver. Background Art

[0002] An electromagnetic drive is an electrical control device that causes a predetermined step change in the controlled variable in an electrical output circuit when the change in the input quantity meets a specified requirement. It features an interactive relationship between the control system and the controlled system. Commonly used in automated control circuits, it is essentially an "automatic switch" that uses a small current to control the operation of a large current. Therefore, it performs functions such as automatic regulation, safety protection, and circuit conversion in circuits. Existing electromagnetic rotary drives typically consist of a magnetic rotating element (rotor) surrounded by an electromagnetic stator element. When energized, the electromagnetic stator generates an attractive or repulsive magnetic force on the rotor, generating torque that causes the rotor to rotate.

[0003] Due to various technical limitations, existing electromagnetic drives are usually complex in structure and not easy to manufacture. At the same time, their efficiency and reliability are relatively poor, which increases the cost of use. Summary of the Invention

[0004] The purpose of the present invention is to provide an electromagnetic rotary driver to solve the many defects of the electromagnetic rotary drivers currently on the market proposed in the above background technology. The present invention provides an electromagnetic rotary driver with a simple structure, simple manufacturing, high efficiency and reliability and an external rotating handle.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an electromagnetic rotary driver, characterized in that it includes a rotating shaft assembly, the rotating shaft assembly includes a rotating shaft, a first electric drive is arranged above the rotating shaft, a first permanent magnet is fixed to the end of the first electric drive, a stop arm is arranged below the rotating shaft, a first stop wall is arranged on one side of the stop arm, and a second stop wall is arranged on the other side, a first electromagnet is arranged on one side of the rotating shaft, and a second electromagnet is arranged on the other side, the first and second electromagnets constitute an electromagnet assembly.

[0006] Preferably, a second electric drive is further provided on the rotating shaft, a second permanent magnet is provided at the end of the second electric drive, and the first electromagnet and the second electromagnet are provided between the first permanent magnet and the second permanent magnet.

[0007] Preferably, the magnetic field components of the first permanent magnet and the second permanent magnet are the same.

[0008] Preferably, the first electromagnet and the second electromagnet each include an iron core and a coil wound around the iron core.

[0009] Preferably, the first permanent magnet is magnetized vertically along the direction of the rotation axis.

[0010] Preferably, the first permanent magnet and the second permanent magnet are magnetized in the same direction and have aligned magnetization directions.

[0011] Preferably, a third permanent magnet is also provided on the first electric drive, and the electromagnetic rotary drive also includes a shell, a cover plate is provided above the shell, a bearing is provided on the cover plate, the rotating shaft is provided in the bearing, a rotating handle is provided on the top of the rotating shaft and is located outside the bearing and the cover plate, and a fourth permanent magnet is provided at the end of the rotating handle.

[0012] Preferably, the third permanent magnet is arranged on the first electric drive, the fourth permanent magnet is located at the lower end of the rotating handle, and the third permanent magnet is magnetized in the same direction as the fourth permanent magnet.

[0013] Preferably, the rotating handle and the rotating shaft assembly rotate in a synchronous manner.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the electromagnetic rotary driver:

[0015] 1. When the electromagnet is not energized, the first and second permanent magnets are attracted to the core of the first electromagnet, which generates a clockwise torque on the rotating shaft assembly (as viewed from the top) and causes it to rotate clockwise until its stop arm is stopped by the first stop wall and locked into the first position (as viewed from the top). Figure 1 In this first position, when the first electromagnet is energized to generate a repulsive force on the first and second permanent magnets, a counterclockwise torque is generated on the rotating shaft assembly, causing it to rotate counterclockwise until its stop arm is stopped by the second stop wall and locked into the second position (not shown). In the second position, the first and second permanent magnets are attracted to the magnetic core of the second electromagnet, and the rotating shaft assembly is locked and remains stable without energizing the electromagnet. Similarly, the rotating shaft assembly can be switched from the second position back to the first position by energizing the second electromagnet. This structure is simple and easy to manufacture, while also being easy to control and improving work efficiency.

[0016] The distance between the first permanent magnet and the electromagnet assembly is approximately the same as the distance between the second permanent magnet and the electromagnet assembly. The magnetic force generated by the magnetic field of the electromagnet assembly and the first permanent magnet on the first electric drive and the magnetic force generated by the magnetic field of the electromagnet assembly and the second permanent magnet on the second electric drive cancel each other out in the vertical direction (i.e., along the axial direction of the rotation axis 111). The torque generated by the magnetic field of the electromagnet assembly and the first permanent magnet on the first electric drive is in the same direction as the torque generated by the magnetic field of the electromagnet assembly and the second permanent magnet on the second electric drive, thereby exerting a greater force on the rotating assembly, providing high operating efficiency of the rotating assembly and reducing energy loss.

[0017] 2. A rotary handle is provided on the outside, and a fourth permanent magnet is provided at the end of the handle. A third permanent magnet is added to the top of the electric drive. The external rotary handle is mounted on the outside of the bearing cover and can rotate freely around the axis of the rotary shaft. The permanent magnets are magnetized in a vertical direction and have aligned polarization directions (for example, the north pole points upward), so that they are magnetically attracted to each other. Due to this magnetic attraction (coupling), the external rotary handle and the rotary shaft assembly rotate in a synchronous manner, enabling external manual control of the rotary actuator. In this way, the electromagnetic rotary drive can be controlled not only electrically but also manually, improving the performance of the electromagnetic rotary drive. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 It is a schematic diagram of the top structure of the present invention.

[0020] Figure 3 It is a structural diagram of the rotary handle in the present invention. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1 、 23. The present invention provides a technical solution: an electromagnetic rotary actuator 100 includes a rotating shaft assembly 110 and first and second electromagnets 130a and 130b, respectively. The rotating shaft assembly 110 further includes a rotating shaft 111, a first electric drive 112a, to the ends of which are fixed a first permanent magnet 10a and a second electric drive 112b, with the second permanent magnet 10b fixed to the ends. The first electromagnet 130a includes an iron core 131a and a coil 132a, while the second electromagnet 130b includes an iron core 131b and a coil 132b. The electromagnets 130a and 130b are preferably positioned between the first permanent magnet 10a and the second permanent magnet 10b. The rotating shaft 111, the first and second electric drives 112a and 112b, and the electromagnets 130a and 130b are preferably made of a soft magnetic material such as iron or a NiFe alloy. The permanent magnets 10a and 10b are preferably made of neodymium iron boron, samarium cobalt, or other suitable permanent magnet materials. The electric drives 112a and 112b are rigidly fixed to the rotating shaft 111. The rotating shaft assembly 110 is mounted on the bearing 30 and can rotate freely about the axis of the rotating shaft 111. The permanent magnets 10a and 10b are preferably magnetized in the vertical direction and aligned with the polarization direction (for example, the north pole points upward). The first and second electromagnets 130a and 130b are mounted on the fixed structural frame 40 and remain stationary. The stop arm 113 is also fixed to the rotating shaft 111, and its rotation is limited to the area surrounded by the stop walls 114 and 115. The rotating shaft assembly 110 and the electromagnets 130a and 130b are appropriately mounted in the housing 60 and sealed by the cover 70. The electrical connector socket 80 can be appropriately mounted on the top or side to provide electrical connection to the electromagnets and other optional electronic circuits.

[0023] The distance from the first permanent magnet 10a to the electromagnet assembly is approximately the same as the distance from the second permanent magnet 10b to the electromagnet assembly. The magnetic force generated by the magnetic field of the electromagnet assembly and the first permanent magnet 10a acting on the first electric drive 112a and the magnetic force generated by the magnetic field of the electromagnet assembly and the second permanent magnet 10b acting on the second electric drive offset each other in the vertical direction (i.e., along the axial direction of the rotating shaft 111). The torque generated by the magnetic field of the electromagnet assembly and the first permanent magnet 10a acting on the first electric drive 112a is in the same direction as the torque generated by the magnetic field of the electromagnet assembly and the second permanent magnet 10b acting on the second electric drive 112b, thereby exerting greater force on the rotating shaft assembly 110, providing high operating efficiency of the rotating shaft assembly 110 and reducing energy loss.

[0024] When the electromagnets 130a and 130b are not energized, the first and second permanent magnets 10a and 10b are attracted to the iron core 131a of the first electromagnet, which generates a clockwise torque (as viewed from the top) on the rotating shaft assembly 110 and causes it to rotate clockwise until its stop arm 113 is stopped by the first stop wall 114 and locked in the first position (as viewed from the top). Figure 1(shown). In this first position, when the first electromagnet 130a is energized to generate a repulsive force on the first and second permanent magnets 10a and 10b, a counterclockwise torque is generated on the rotating shaft assembly 110, causing it to rotate counterclockwise until its stop arm 113 is stopped by the second stop wall 115 and locked into the second position (not shown). In the second position, the first and second permanent magnets 10a and 10b are attracted to the iron core 131b of the second electromagnet 130b, and the rotating shaft assembly 110 is locked and remains stable without energizing the electromagnet. Similarly, the rotating shaft assembly 110 can be switched from the second position back to the first position by energizing the second electromagnet 130b.

[0025] In addition, an external rotating handle 140 can be optionally added, which also includes a fourth permanent magnet 141 attached to its end. Accordingly, a third permanent magnet 10c is added to the top of the electric drive 112a. The third and fourth permanent magnets are preferably made of neodymium iron boron, samarium cobalt or other suitable permanent magnetic materials. The rotating handle 140 is preferably made of a soft magnetic material (such as iron) and is mounted on the outside of the bearing 30 cover 70 and can rotate freely around the axis of the shaft 111. The permanent magnets 10c and 141 are preferably magnetized in a vertical direction with aligned polarization directions (for example, the north pole points upward) so that they are magnetically attracted to each other. Due to this magnetic attraction (coupling), the external rotating handle 140 and the rotating shaft assembly 110 rotate in a synchronous manner, enabling external manual control of the rotary drive 100.

[0026] If necessary, more similar electric drive components with permanent magnets can be added to the rotating shaft assembly and paired with additional electromagnets to increase the rotational torque of the rotary drive.

[0027] Other mechanical or electronic components can be added to the interior or exterior of the housing 60 of the rotary actuator 100, and appropriate linkage between the rotary shaft 111 and these components allows the rotary shaft assembly 110 to implement various position control functions. A variety of methods can be used to manufacture the rotary actuator. For the sake of brevity, detailed descriptions of various possible manufacturing methods are omitted here.

[0028] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An electromagnetic rotary driver, characterized in that: The invention comprises a rotating shaft assembly (110) and an electromagnet assembly, wherein the electromagnet assembly comprises a first electromagnet (130a) and a second electromagnet (130b), the rotating shaft assembly (110) comprises a rotating shaft (111), a first electric drive (112a) is arranged above the rotating shaft (111), a first permanent magnet (10a) is fixed to the end of the first electric drive (112a), a stop arm (113) is arranged below the rotating shaft (111), a first stop wall (114) is arranged on one side of the stop arm (113), and a second stop wall (115) is arranged on the other side, the first electromagnet (130a) and the second electromagnet (130b) are respectively located on both sides of the rotating shaft (111), a second electric drive (112b) is further arranged on the rotating shaft (111), a second permanent magnet (10b) is arranged at the end of the second electric drive (112b), and the first stop wall (114) is arranged on the other side of the stop arm (113). An electromagnet (130a) and a second electromagnet (130b) are arranged between a first permanent magnet (10a) and a second permanent magnet (10b). When the first electromagnet (130a) and the second electromagnet (130b) are not energized, the first permanent magnet (10a) and the second permanent magnet (10b) are attracted to the iron core (131a) of the first electromagnet, and the electromagnet generates a clockwise torque on the rotating shaft assembly (110) and causes it to rotate clockwise until its stop arm (113) is stopped by a first stop wall (114) and locked to a first position. In this first position, when the first electromagnet (130a) is energized to generate a repulsive force on the first permanent magnet (10a) and the second permanent magnet (10b), a counterclockwise torque is generated on the rotating shaft assembly (110), causing it to rotate counterclockwise until its stop arm (113) is stopped by a second stop wall (115) and locked to a second position.

2. The electromagnetic rotary driver according to claim 1, characterized in that The first permanent magnet (10a) is magnetized vertically along the direction of the rotation axis (111); the second permanent magnet (10b) is magnetized in the same direction as the first permanent magnet (10a) and has aligned magnetization directions.

3. The electromagnetic rotary driver according to claim 1, characterized in that The torque generated on the first electric drive (112a) by the interaction between the magnetic fields of the electromagnet assembly and the first permanent magnet (10a) is in the same direction as the torque generated on the second electric drive (112b) by the interaction between the magnetic fields of the electromagnet assembly and the second permanent magnet (10b).

4. The electromagnetic rotary driver according to claim 1, wherein: The vertical components of the magnetic force generated on the first electric drive (112a) by the interaction between the magnetic fields of the electromagnet assembly and the first permanent magnet (10a) and the magnetic force generated on the second electric drive (112b) by the interaction between the magnetic fields of the electromagnet assembly and the second permanent magnet (10b) cancel each other out.

5. The electromagnetic rotary driver according to claim 1, characterized in that The first electromagnet (130a) and the second electromagnet (130b) both include iron cores (131a, 131b) and coils (132a, 132b) wound around the iron cores (131a, 131b).

6. The electromagnetic rotary actuator according to claim 1, characterized in that The first electric drive (112a) is also provided with a third permanent magnet (10c), and the electromagnetic rotary drive further includes a housing (60), a cover plate (70) is provided above the housing (60), a bearing (30) is provided on the cover plate (70), the rotating shaft (111) is provided on the bearing (30), a rotating handle (140) is provided at the top of the rotating shaft (111) and is located outside the bearing (30) and the cover plate (70), and a fourth permanent magnet (141) is provided at the end of the rotating handle (140).

7. The electromagnetic rotary drive according to claim 6, characterized in that The third permanent magnet (10c) is arranged at the upper end of the first electric drive (112a), and the fourth permanent magnet (141) is located at the lower end of the rotating handle (140). The third permanent magnet (10c) and the fourth permanent magnet (141) are magnetized in the same direction.

8. The electromagnetic rotary drive according to claim 6, characterized in that , the rotating handle (140) and the rotating shaft assembly (110) rotate in a synchronous manner.

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