Magnetic momenter coil quick replacement device
By designing a quick-change device for magnetic torque converter coils, and utilizing the cooperation of limit blocks and limit fixing mechanisms, the problem of cumbersome traditional coil replacement process is solved, enabling quick coil replacement and convenient installation, which is suitable for spacecraft maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING JINGHONG ELECTRONICS CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-07-24
AI Technical Summary
The replacement process for traditional magnetic torque coils is cumbersome and time-consuming, and is inconvenient to operate in confined spaces, increasing the time cost and risk of errors, and potentially damaging the winding base and coil body.
A quick-change device for magnetic torquer coils was designed. By using the cooperation of a limit stop and a limit fixing mechanism, the limit stop can be locked and unlocked by pulling the pull ring, simplifying the installation and disassembly process of the coil.
It enables rapid coil replacement, improves maintenance efficiency, reduces operational difficulty and risk, avoids component damage, and is suitable for spacecraft maintenance in confined spaces.
Smart Images

Figure CN224554108U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aerospace equipment maintenance tools, and in particular to a quick replacement device for magnetic torque coils. Background Technology
[0002] The magnetic torquer is a key actuator in the spacecraft attitude control system. It generates a controllable magnetic moment by energizing its internal coil, which interacts with the Earth's magnetic field to produce a control torque. The coil, as the core component of the magnetic torquer, is typically tightly wound on a specific winding base. During the development, testing, and on-orbit operation and maintenance of spacecraft, the coil in the magnetic torquer often needs to be replaced due to changes in testing requirements, coil performance degradation, or accidental damage. Reliable fixation and convenient replacement of the coil are crucial for ensuring the performance of the magnetic torquer and improving the efficiency of spacecraft testing and maintenance.
[0003] Traditional methods for replacing magnetic torquer coils typically involve complex mechanical disassembly. The coil assembly (including the winding base) or the entire magnetic torquer structure needs to be secured using screws, clamps, adhesives, or other methods. When coil replacement is required, operators must disassemble each of these fasteners one by one. This process is cumbersome and time-consuming, especially in spacecraft assembly, testing environments, or simulated on-orbit maintenance scenarios where space and ease of operation are strictly limited. Frequent disassembly not only increases operational time costs and the risk of errors but may also cause physical damage to the winding base, the coil itself, or surrounding precision components. Utility Model Content
[0004] This invention provides a device that can significantly simplify the operation process and achieve quick coil replacement without complete disassembly, thereby improving maintenance efficiency and reducing operational risks.
[0005] The technical solution adopted in this utility model is as follows: a quick replacement device for a magnetic torque coil, including a winding seat and a coil wound on the outside of the winding seat. One end of the winding seat has protrusions integrally connected to both sides. The other end of the winding seat has fixing grooves inside both sides. The fixing grooves are provided with limiting blocks that are slidably connected to the winding seat and extend to the outside of the winding seat. One side of the limiting block is connected to the winding seat by multiple first springs, and the multiple first springs are all located in the fixing grooves. The winding seat has an installation groove on one side of the fixing grooves. The installation grooves are provided with limiting and fixing mechanisms that cooperate with the limiting blocks.
[0006] As a further improvement of this utility model, the end face of the limiting block extending to the outside of the winding seat and the end face of the protrusion are on the same plane.
[0007] As a further improvement of this utility model, the limiting block is integrally connected to a guide block on the side away from the limiting and fixing mechanism, and the winding seat is provided with a guide groove on the side of the fixing groove for the guide block to slide.
[0008] As a further improvement of this utility model, the limiting and fixing mechanism includes a fixing plate disposed in the mounting groove and fixedly connected to the winding seat. A connecting rod is provided on the fixing plate. A movable plate is fixedly connected to the end of the connecting rod near the limiting block. The movable plate and the fixing plate are connected by a second spring sleeved on the outside of the connecting rod. A limiting post cooperating with the limiting block is fixedly connected to the side of the movable plate near the limiting block. A pull ring extending to the outside of the winding seat is fixedly connected to the end of the connecting rod away from the movable plate.
[0009] As a further improvement of this utility model, the limiting block is provided with limiting grooves at both ends of one side that are adapted to the limiting post.
[0010] The beneficial effects of this utility model are as follows: By cleverly cooperating with the limiting stop block set on the winding seat and the limiting fixing mechanism, this utility model achieves the quick release or establishment of the locking state of the limiting stop block, so that the limiting stop block can be conveniently retracted into the fixing groove or reliably extended out of the winding seat to form a block. Thus, the coil can be easily replaced without the use of any tools or disassembly of the entire device or complex fixing parts. This significantly improves the replacement efficiency and operation convenience of the magnetic torquer coil, reduces the difficulty of operation and the maintenance risk in confined spaces (such as spacecraft assembly and testing environments), and avoids component damage that may be caused by repeated disassembly. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of the quick-change device for the magnetic torque coil of this utility model;
[0012] Figure 2 This is a reference diagram showing the storage state of the limit stop of the quick replacement device for the magnetic torque coil of this utility model;
[0013] Figure 3 This is a partial cross-sectional view of the quick-change device for the magnetic torque coil of this utility model. Figure 1 ;
[0014] Figure 4 This is a partial cross-sectional view of the quick-change device for the magnetic torque coil of this utility model. Figure 2 .
[0015] As shown in the figure: 1. Winding seat; 2. Protrusion; 3. Fixing groove; 4. Limiting block; 5. First spring; 6. Mounting groove; 7. Limiting and fixing mechanism; 701. Fixing plate; 702. Connecting rod; 703. Movable plate; 704. Second spring; 705. Limiting post; 706. Pull ring; 707. Limiting groove; 8. Guide block; 9. Guide slide; 10. Coil. Detailed Implementation
[0016] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly mentioned in this specification are defined relative to their structure and are relative concepts. Therefore, they may vary depending on their location and usage; thus, these or other directional terms should not be interpreted as restrictive terms.
[0017] The singular forms “a,” “the,” and “the” used in this specification are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes one or more of the associated listed items, any or all possible combinations thereof.
[0018] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0019] This utility model provides the following: Figure 1-4 The magnetic torque coil quick-change device shown includes a winding seat 1 and a coil 10 wound on the outside of the winding seat. Both sides of one end of the winding seat 1 are integrally connected with protrusions 2. Both sides of the other end of the winding seat 1 are provided with fixing grooves 3. The fixing grooves 3 are provided with limiting blocks 4 that are slidably connected to the winding seat 1 and extend to the outside of the winding seat 1. One side of the limiting block 4 is connected to the winding seat 1 by multiple first springs 5 and the multiple first springs 5 are all located in the fixing grooves 3. The winding seat 1 is provided with an installation groove 6 on one side of the fixing groove 3. The installation groove 6 is provided with a limiting and fixing mechanism 7 that cooperates with the limiting block 4.
[0020] like Figure 1-4 As shown, in this utility model, the end face of the limiting block 4 extending to the outside of the winding seat 1 is on the same plane as the end face of the protrusion 2, which makes the winding seat 1 more flat when it is in contact with other components, reducing problems such as installation instability that may be caused by unevenness.
[0021] like Figure 3 and Figure 4As shown, in this utility model, the limiting block 4 is integrally connected to the guide block 8 on the side away from the limiting and fixing mechanism 7. The winding seat 1 is provided with a guide groove 9 on one side of the fixing groove 3 for the guide block 8 to slide. The cooperation between the guide block 8 and the guide groove 9 can ensure that the limiting block 4 slides more smoothly and stably in the fixing groove 3, avoid the limiting block 4 from getting stuck or deviating during the sliding process, and ensure the normal operation of the device.
[0022] like Figure 4 As shown, the limiting and fixing mechanism 7 of this utility model includes a fixing plate 701 disposed in the mounting groove 6 and fixedly connected to the winding seat 1. A connecting rod 702 is passed through the fixing plate 701. A movable plate 703 is fixedly connected to the end of the connecting rod 702 near the limiting block 4. The movable plate 703 and the fixing plate 701 are connected by a second spring 704 sleeved on the outside of the connecting rod 702. A limiting post 705 that cooperates with the limiting block 4 is fixedly connected to the side of the movable plate 703 near the limiting block 4. A pull ring 706 extending to the outside of the winding seat 1 is fixedly connected to the end of the connecting rod 702 away from the movable plate 703. Limiting grooves 707 that are adapted to the limiting post 705 are provided at both ends of one side of the limiting block 4. The limiting and fixing mechanism 7 realizes the locking and unlocking of the limiting block 4.
[0023] Working principle: In the specific implementation of this utility model, when it is necessary to replace the coil 10, the operator only needs to pull the pull ring 706. The pull ring 706 drives the connecting rod 702 to move outward. The connecting rod 702 drives the movable plate 703 to compress the second spring 704, so that the limiting post 705 disengages from the limiting groove 707 of the limiting block 4. At this time, the limiting block 4 is no longer restricted. Press the limiting block 4 again, and the first spring 5 is compressed, causing it to retract into the fixed groove 3. After the limiting block 4 is fully retracted into the fixed groove 3, the pull ring 706 is released. The elastic potential energy of the second spring 704 causes the limiting post 405 to move into another limiting groove 407. At this time, the limiting block 4 is locked again and is located in the fixed groove 3. Then the coil 10 can be easily removed from the winding seat 1.
[0024] When installing a new coil 10, first put the coil 10 on the winding base 1, and then pull the pull ring 706 to pull the limiting post 705 out of the limiting groove 707. At this time, the elastic potential energy of the first spring 5 pushes the limiting block 4 to move outward. When the end face of the limiting block 4 moves to be flush with the end face of the protrusion 2, release the pull ring 706. The elastic potential energy of the second spring 704 causes the limiting post 705 to move into another limiting groove 407, thereby locking the limiting block 4 in the position that extends outward from the winding base 1, so as to reliably fix the coil 10.
[0025] This operating method is simple and intuitive, requiring no additional tools. Even in confined spaces such as spacecraft assembly and testing environments, operators can quickly and accurately replace the magnetic torque coil 10, greatly improving work efficiency and reducing maintenance costs and risks. Furthermore, by reducing the number of disassemblies and reassemblies, the lifespan of the device is further extended.
[0026] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A quick-change device for a magnetic torque converter coil, comprising a winding base (1) and a coil (10) wound on the outside of the winding base, characterized in that: The winding seat (1) has protrusions (2) integrally connected to both sides at one end. The winding seat (1) has fixing grooves (3) inside both sides at the other end. The fixing groove (3) has a limiting block (4) that is slidably connected to the winding seat (1) and the limiting block (4) extends to the outside of the winding seat (1). The limiting block (4) is connected to the winding seat (1) on one side by multiple first springs (5) and the multiple first springs (5) are all located in the fixing groove (3). The winding seat (1) has an installation groove (6) on one side of the fixing groove (3). The installation groove (6) has a limiting and fixing mechanism (7) that cooperates with the limiting block (4).
2. The quick-change device for magnetic torque converter coil according to claim 1, characterized in that: The end face of the limiting block (4) extending to the outside of the winding seat (1) is on the same plane as the end face of the protrusion (2).
3. The quick-change device for magnetic torque converter coil according to claim 1, characterized in that: The limiting block (4) is integrally connected to the guide block (8) on the side away from the limiting fixing mechanism (7), and the winding seat (1) is provided with a guide groove (9) on the side of the fixing groove (3) for the guide block (8) to slide.
4. The quick-change device for magnetic torque converter coil according to claim 1, characterized in that: The limiting and fixing mechanism (7) includes a fixing plate (701) disposed in the mounting groove (6) and fixedly connected to the winding seat (1). A connecting rod (702) is provided on the fixing plate (701). A movable plate (703) is fixedly connected to one end of the connecting rod (702) near the limiting block (4). The movable plate (703) and the fixing plate (701) are connected by a second spring (704) sleeved on the outside of the connecting rod (702). A limiting post (705) that cooperates with the limiting block (4) is fixedly connected to one side of the movable plate (703) near the limiting block (4). A pull ring (706) extending to the outside of the winding seat (1) is fixedly connected to one end of the connecting rod (702) away from the movable plate (703).
5. The quick-change device for the magnetic torque coil according to claim 4, characterized in that: The limiting block (4) has a limiting groove (707) at both ends of one side that is adapted to the limiting post (705).