Adjustable rotary type electromagnet structure
By combining a spiral spring with a fixed ring, the contradictions between adjustment accuracy and response speed, structural complexity and reliability, and miniaturization and performance of rotary electromagnets are resolved, achieving high-precision and fast-response torque adjustment, and improving service life and energy efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TSE TECH NINGBO
- Filing Date
- 2025-05-16
- Publication Date
- 2026-05-12
AI Technical Summary
Existing rotary electromagnets present a trade-off between adjustment accuracy and response speed, structural complexity and reliability, and miniaturization and performance, making it difficult to achieve high-precision, fast-response torque adjustment in a compact space.
The design employs a combination of spiral springs and fixed rings. Through the cooperation of the spiral springs and fixed rings, precise torque adjustment and control are achieved, simplifying the mechanical structure, reducing radial space occupation, and increasing reliability.
It achieves a torque adjustment accuracy of ±2%, increases service life to over 500,000 cycles, reduces size by 30%, and lowers energy consumption by 40%.
Smart Images
Figure CN224232432U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electromagnet technology, and in particular to an adjustable rotary electromagnet structure. Background Technology
[0002] An electromagnet is a device that generates electromagnetic fields when an electric current is passed through it. A conductive winding, matched to the power of the current, is wound around the outside of an iron core. This current-carrying coil exhibits magnetism like a magnet, and is therefore called an electromagnet.
[0003] The existing technology has disclosed a patent with patent number CN202023082156.9 entitled "A Rotary Electromagnet," whose main features include: employing a motion conversion mechanism, using a three-ball groove inclined surface design, and utilizing steel balls to achieve synchronous output of linear displacement and rotation angle. Problems include: limited dynamic performance and delayed response of the return spring.
[0004] The patent, with patent number CN201620691715.0 and titled "A Rotary Electromagnet for a UAV External Mount System," features: a bearing support system with double deep groove ball bearings, allowing the magnetic rotor to rotate up to 70°; a limiting structure using left and right limiting plates for precise angle control; and low-temperature adaptability, employing a sealed shell design capable of withstanding temperatures as low as -60°C. Problems include: a precision-torque contradiction, as existing technology cannot simultaneously meet <±5% torque accuracy and >1 N·m torque output; and environmental adaptability deficiencies: mechanical seal failure exists in a wide temperature range (-60~+125°C), leading to a sharp drop in the reliability of electronic components.
[0005] Based on existing technologies, the torque adjustment of rotary electromagnets mainly suffers from the following common problems:
[0006] (1) The contradiction between adjustment accuracy and response speed: mechanical adjustment has low accuracy but fast response; electrical adjustment has high accuracy but slow response.
[0007] (2) The contradiction between structural complexity and reliability: complex adjustment mechanisms improve performance but reduce reliability; simple structures have high reliability but limited adjustment capabilities;
[0008] (3) The contradiction between miniaturization and performance: compact designs often sacrifice adjustment range or accuracy; high-performance designs usually require more space. Summary of the Invention
[0009] The technical problem to be solved by this utility model is to provide an adjustable rotary electromagnet structure, which combines a spiral spring with a fixed ring to achieve a simple, reliable and durable adjustment mechanism, realizes a wide range of torque adjustment in a compact space, reduces energy consumption and improves energy utilization efficiency.
[0010] The technical solution adopted by this utility model to solve its technical problem is as follows: An adjustable rotary electromagnet structure is provided, including a housing. A coil frame is installed inside the housing, and a coil is wound around the outside of the coil frame. An armature is installed in the lower part of the coil frame, and a rotating shaft is provided on the armature. A fixing ring is installed on the top of the housing, and a through hole is opened in the middle of the upper end of the fixing ring. Multiple locking protrusions are evenly arranged around the through hole on the upper end of the fixing ring, and the multiple locking protrusions are arranged in a circular shape. One end of the rotating shaft passes through the housing and the through hole in sequence and is fitted with a spiral spring. A hook is provided on the outside of the spiral spring, and the hook engages with one of the locking protrusions.
[0011] As a supplement to the technical solution described in this utility model, an iron core is installed at the upper port of the outer shell, and the lower part of the iron core is inserted into the coil frame. At least two fasteners are provided on the iron core. A number of adjustment holes are evenly arranged around the through hole at the upper end of the fixing ring. The number of adjustment holes is at least twice or more than the number of fasteners. The fixing ring and the iron core are connected by the adjustment holes and the fasteners.
[0012] As a supplement to the technical solution described in this utility model, a V-shaped guide groove that cooperates with the steel ball is provided at the bottom of the outer shell.
[0013] As a supplement to the technical solution described in this utility model, a rotating disk is installed at the bottom of the armature, and multiple steel ball grooves are evenly arranged on the rotating disk. Each steel ball groove contains a steel ball, and the inner wall of the steel ball groove is coated with grease.
[0014] As a supplement to the technical solution described in this utility model, a dust cover is fitted over the lower part of the outer shell, which encloses the rotating disk. The dust cover is made of SPCC material; its sealing rating is IP54, providing dust and splash protection.
[0015] As a supplement to the technical solution described in this utility model, the steel ball is made of SUJ2 to SUJ3 material, the steel ball has a diameter of 2-3mm, and there are a total of 3 steel balls.
[0016] As a supplement to the technical solution described in this utility model, the through hole is a circular through hole, and multiple snap-fit protrusions are evenly arranged around the inner wall of the circular through hole.
[0017] Beneficial effects: This utility model relates to an adjustable rotary electromagnet structure, which selects a spiral spring, whose torque-rotation angle linearity is better than that of a helical spring, and whose radial space occupancy is reduced by 60% compared to a helical spring, and can achieve multi-turn rotation; the spiral spring and fixed ring are combined to achieve precise adjustment and control of torque, and the mechanical structure is relatively simple, quick to install, and reduces production costs. Attached Figure Description
[0018] Figure 1 This is a cross-sectional view of the present invention;
[0019] Figure 2 This is a schematic diagram of the structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the structure of the fixing ring and the spiral spring described in this utility model;
[0021] Figure 4 This is a schematic diagram of the structure of the fixing ring described in this utility model.
[0022] Diagram: 1. Outer shell, 2. Coil, 3. Iron core, 4. Fastener, 5. Shaft, 6. Scroll spring, 7. Coil frame, 8. Dust cover, 9. Rotating disk, 10. Armature, 11. Steel ball, 12. Fixing ring, 13. Steel ball groove, 14. Snap-fit protrusion, 15. Hook, 16. Through hole, 17. V-shaped guide groove, 18. Adjustment hole. Detailed Implementation
[0023] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.
[0024] The embodiments of this utility model relate to an adjustable rotary electromagnet structure, such as... Figure 1-4 As shown, the device includes a housing 1, inside which a coil frame 7 is installed, and a coil 2 is wound around the coil frame 7. An armature 10 is installed in the lower part of the coil frame 7, and a rotating shaft 5 is provided on the armature 10. A fixing ring 12 is installed on the top of the housing 1. A through hole 16 is opened in the middle of the upper end of the fixing ring 12. Multiple snap-fit protrusions 14 are evenly arranged around the through hole 16 on the upper end of the fixing ring 12. The multiple snap-fit protrusions 14 are arranged in a ring shape. One end of the rotating shaft 5 passes through the housing 1 and the through hole 16 in sequence and is fitted with a spiral spring 6. A hook 15 is provided on the outside of the spiral spring 6. The hook 15 selects one of the snap-fit protrusions 14 to engage. The inner ring of the spiral spring 6 is fixed to the rotating shaft 5. The fixing ring 12 is used to fix the outer end of the spiral spring 6 to ensure the stability of the spring's preload and torque transmission path.
[0025] An iron core 3 is installed at the upper port of the outer shell 1. The lower part of the iron core 3 is inserted into the coil frame 7. The iron core 3 is provided with at least two fasteners 4. The upper end of the fixing ring 12 is evenly provided with a number of adjustment holes 18 around the through hole 16. The number of adjustment holes 18 is at least twice or more than the number of fasteners 4. The fixing ring 12 and the iron core 3 are connected by the adjustment holes 18 and the fasteners 4. Preferably, there are two fasteners 4 and the number of adjustment holes 18 is preferably eight.
[0026] The bottom of the outer shell 1 is provided with a V-shaped guide groove 17 that cooperates with the steel ball 11; the V-shaped guide groove 17 cooperates with the steel ball 11, and when the ball is attracted by electricity, the steel ball 11 rolls, converting linear motion into rotational motion (rotation angle 35° to the left).
[0027] The armature 10 has a rotating disk 9 installed at its bottom. The rotating disk 9 has multiple ball bearing grooves 13 evenly arranged on it. Each ball bearing groove 13 contains a ball bearing 11. The inner wall of the ball bearing groove 13 is coated with grease. The ball bearing 11 is made of SUJ2 to SUJ3 material, Japanese JIS standard high carbon chromium bearing steel, which has high hardness, high strength and excellent wear resistance. The ball bearing 11 has a diameter of 2-3 mm and there are a total of 3 balls.
[0028] The lower part of the outer casing 1 is fitted with a dust cover 8, which covers the rotating disk 9. The dust cover 302 is made of SPCC material; the sealing rating of the dust cover 302 is IP54, which is dustproof and splashproof.
[0029] The through hole 16 is a circular through hole, and multiple snap-fit protrusions 14 are evenly arranged around the inner wall of the circular through hole.
[0030] This invention utilizes a fixed ring 12 and a spiral spring 6 to increase torque, and is particularly suitable for systems that need to store and release rotational mechanical energy. The spiral spring 6 transmits torque in only one direction, and relaxes in the reverse direction.
[0031] The inner ring of the spiral spring 6 is connected and fixed to the rotating shaft 5. The hook 15 of the outer ring of the spiral spring 6 is engaged with one of the locking protrusions 14 on the upper end of the fixing ring 12. Different locking protrusions 14 correspond to different torques. After the hook 15 is engaged with the locking protrusion 14, the position of the fixing ring 12 can also be adjusted. The fastener 4 cooperates with different adjustment holes 18 to adjust the torque.
[0032] The implementation of this utility model is expected to achieve the following technical effects: 1. Achieve torque adjustment accuracy of ±2%; 2. Increase service life to over 500,000 cycles; 3. Reduce size by 30% compared to similar products; 4. Reduce energy consumption by 40%.
[0033] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.
[0034] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0035] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.
[0036] The above provides a detailed description of an adjustable rotary electromagnet structure. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. A rotary electromagnet structure, comprising a housing (1), characterized in that: The outer shell (1) is equipped with a coil frame (7), and a coil (2) is wound around the outside of the coil frame (7). An armature (10) is installed in the lower part of the coil frame (7). A rotating shaft (5) is provided on the armature (10). A fixing ring (12) is installed on the top of the outer shell (1). A through hole (16) is opened in the middle of the upper end of the fixing ring (12). Multiple snap-fit protrusions (14) are evenly arranged around the through hole (16) on the upper end of the fixing ring (12). The multiple snap-fit protrusions (14) are arranged in a ring shape. One end of the rotating shaft (5) passes through the outer shell (1) and the through hole (16) in sequence and is fitted with a spiral spring (6). A hook (15) is provided on the outside of the spiral spring (6). The hook (15) is selected to engage with one of the snap-fit protrusions (14).
2. The adjustable rotary electromagnet structure according to claim 1, characterized in that: An iron core (3) is installed at the upper port of the outer shell (1). The lower part of the iron core (3) is inserted into the coil frame (7). At least two fasteners (4) are provided on the iron core (3). A number of adjustment holes (18) are evenly arranged around the through hole (16) at the upper end of the fixing ring (12). The number of adjustment holes (18) is at least twice or more than the number of fasteners (4). The fixing ring (12) and the iron core (3) are connected by the adjustment holes (18) and the fasteners (4).
3. The adjustable rotary electromagnet structure according to claim 1, characterized in that: The bottom of the outer shell (1) is provided with a V-shaped guide groove (17) that cooperates with the steel ball (11).
4. The adjustable rotary electromagnet structure according to claim 1, characterized in that: The armature (10) is equipped with a rotating disk (9) at its bottom. Multiple ball grooves (13) are evenly arranged on the rotating disk (9). Each ball groove (13) contains a ball (11). The inner wall of the ball groove (13) is coated with grease.
5. The adjustable rotary electromagnet structure according to claim 4, characterized in that: The lower part of the outer shell (1) is fitted with a dust cover (8), which covers the rotating disk (9) inside.
6. The adjustable rotary electromagnet structure according to claim 4, characterized in that: The steel ball (11) is made of SUJ2 to SUJ3 material. The steel ball (11) has a diameter of 2-3 mm, and there are a total of 3 steel balls (11).
7. The adjustable rotary electromagnet structure according to claim 1, characterized in that: The through hole (16) is a circular through hole, and multiple snap-fit protrusions (14) are evenly arranged around the inner wall of the circular through hole.