A C-arm adjusting mechanism with angle locking function

Abstract

The utility model discloses a C arm adjusting mechanism with angle locking function, including main part, hidden embedding groove, first coaxial gear, electromagnetic brake, C shape electromagnetic ring and arc magnetic block, one end of main part is provided with connecting arm, and one end of connecting arm is provided with support, and the inner chamber and clamping chamber are opened in support, and C shape arm is arranged in clamping chamber, and the outer wall on C shape arm is opened with hidden embedding groove, and the hidden embedding groove is fixedly connected with the tooth groove strip, the utility model discloses adopting the structured design, and the device innovation adopts the meshing mechanical locking of tooth groove surface, and the synchronous electromagnetic brake of motor, and the arc electromagnetic adsorption reinforcement three -fold locking collaborative design of reinforcing, forms the complementary safety redundancy structure, and the surface meshing structure of tooth groove strip and guide tooth disc is through transmission gap compensation design, realizes mechanical hard locking, and the angle deviation is prevented from the structure, and the electromagnetic brake and rotary motor rear end cover integrated linkage, and the transmission shaft is locked in time when motor stops.

Description

Technical Field

[0001] This utility model relates to the field of C-arm adjustment technology, and in particular to a C-arm adjustment mechanism with angle locking function. Background Technology

[0002] C-arm adjustment mechanisms are widely used in medical imaging equipment, industrial precision testing, and machining positioning. Their core function is to achieve flexible angle adjustment and precise locking of the C-arm, ensuring the observation or processing accuracy of the target object during operation. However, existing C-arm adjustment mechanisms suffer from the following technical challenges: First, the locking methods of existing C-arm adjustment mechanisms are mostly limited to single mechanical or electromagnetic locking, which has inherent technical defects. Pure mechanical locking relies on the deformation of elastic components to achieve locking; after long-term, high-frequency use, component wear and elasticity decay easily occur, leading to a gradual increase in the locking gap and causing angle deviation. Pure electromagnetic locking is significantly affected by power supply quality and electromagnetic interference; it is prone to unlocking failure during power outages or sudden electromagnetic anomalies, making it difficult to meet the extremely high safety requirements of scenarios such as medical and precision manufacturing. Furthermore, the angle adjustment and locking mechanisms of most mechanisms... The lack of coordinated design in the fixed action leads to a lag in the unlocking response compared to the driving action, which can easily cause adjustment jamming or a lag in the locking action compared to the motor stopping, resulting in inertial displacement and further reducing positioning accuracy. Secondly, the drive unit, transmission unit, locking unit, and guide unit of the traditional C-arm adjustment mechanism are mostly arranged in a decentralized manner, with loose connections between the components. This not only occupies a lot of space but also easily leads to the accumulation of gaps in the transmission link due to assembly errors, affecting the accuracy of angle adjustment. Moreover, some core locking components lack effective protective structures and are susceptible to corrosion from external dust and liquids, causing parts to rust or jam, shortening the service life of the mechanism. In addition, the design of a single gear transmission or belt transmission makes it difficult to balance the smoothness of adjustment and the stability of locking. In high-precision, high-frequency angle switching scenarios, the positioning error is easily amplified due to transmission gaps, which cannot meet the needs of precision operations. Utility Model Content

[0003] The purpose of this invention is to provide a C-arm adjustment mechanism with angle locking function to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a C-arm adjustment mechanism with angle locking function, including a main body, a connecting arm at one end of the main body, a bracket at one end of the connecting arm, an inner cavity and a clamping cavity in the bracket, a C-shaped arm in the clamping cavity, a hidden embedding groove on the outer wall of the C-shaped arm, and a toothed strip fixedly connected in the hidden embedding groove.

[0005] As a further technical solution of this utility model, a guide toothed disc is provided in the inner cavity at the position corresponding to the toothed groove, and a first coaxial gear and a second coaxial gear are fixedly connected to the outer surfaces of the two sides of the guide toothed disc, respectively.

[0006] As a further technical solution of this utility model, a first connecting shaft and a second connecting shaft are respectively engaged on the first coaxial gear and the second coaxial gear. A fixing column is fixedly connected to the outer wall of the first connecting shaft and the second connecting shaft. A through hole is opened on one side of the inner wall of the inner cavity at the position corresponding to the first connecting shaft.

[0007] As a further technical solution of this utility model, both the first connecting shaft and the second connecting shaft are provided with internal tooth grooves, a bearing is snapped into the outer side of the second connecting shaft, a rotating motor is snapped into one end of the first connecting shaft, an electromagnetic brake is snapped into the rear end cover of the rotating motor, and a protective cavity is provided on the outer side of the rotating motor.

[0008] As a further technical solution of this utility model, a protective cavity is provided on the outer side of the bracket, and a threaded hole for installation is provided on the protective cavity.

[0009] As a further technical solution of this utility model, a fixing threaded hole is provided on the outer wall of the bracket at the position corresponding to the mounting threaded hole, and a fixing bolt is threadedly connected in both the mounting threaded hole and the fixing threaded hole.

[0010] As a further technical solution of this utility model, C-shaped guide grooves are provided on both outer surfaces of the C-shaped arm, and C-shaped electromagnetic rings are provided in the C-shaped guide grooves. Arc-shaped magnetic blocks are fixedly connected on both inner walls of the clamping cavity at positions corresponding to the C-shaped electromagnetic rings.

[0011] Compared with existing technologies, the beneficial effects achieved by this utility model are as follows: This utility model adopts a structured design. The device innovatively employs a triple locking collaborative design of toothed surface meshing mechanical locking, synchronous electromagnetic braking of the motor, and arc-shaped electromagnetic adsorption reinforcement, forming a complementary safety redundancy structure. The surface meshing structure of the toothed bar and the guide toothed disc achieves mechanical hard locking through transmission clearance compensation design, structurally eliminating angular deviation. The electromagnetic brake is integrated and linked with the rear end cover of the rotating motor, instantly locking the transmission shaft when the motor stops, effectively offsetting inertial displacement. The arc-shaped adaptation design of the C-shaped electromagnetic coil and the arc-shaped magnetic block makes the adsorption force evenly distributed along the trajectory of the C-shaped arm, further enhancing the locking effect. This design completely solves the pain point of easy failure of single locking methods in existing technologies. Even in power failure or electromagnetic interference scenarios, it can still ensure basic positioning through mechanical locking, significantly improving the usability of the mechanism. Prioritizing safety and locking reliability, the device integrates drive, transmission, and locking components through a functional partitioning design of the bracket cavity and clamping cavity. Combined with a structural design featuring concealed embedded toothed strips in the groove and a protective cavity encapsulating the core components, the overall space occupied by the mechanism is significantly reduced. The protective cavity and modular bolt fixing structure form multiple layers of protection, effectively isolating dust and liquid corrosion, reducing the risk of component corrosion and jamming, and extending the service life of the mechanism. Simultaneously, the coordinated transmission design of the dual coaxial gears and connecting shaft reduces transmission link clearance, and the bearing assembly reduces rotational friction resistance. Coupled with the synchronous response control of the electromagnetic and drive components, seamless adjustment and locking are achieved, ensuring smooth angle adjustment while avoiding error accumulation through optimized transmission accuracy. This allows for flexible adaptation to the high-precision operation requirements of various fields such as medical imaging equipment and industrial precision testing. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is an exploded view of the structure of this utility model; Figure 3 for Figure 2 Enlarged structural diagram of region A in the middle; Figure 4 for Figure 2 A magnified structural diagram of region B in the middle; Figure 5 This is an exploded rear view of the structure of this utility model.

[0014] In the diagram: 1. Main body; 2. Connecting arm; 3. Bracket; 4. Inner cavity; 5. Clamping cavity; 6. C-shaped arm; 7. Hidden embedding groove; 8. Gear rack; 9. Guide gear plate; 10. First coaxial gear; 11. Second coaxial gear; 12. First connecting shaft; 13. Second connecting shaft; 14. Inner gear groove; 15. Fixing post; 16. Through hole; 17. Bearing; 18. Rotating motor; 19. Electromagnetic brake; 20. Protective cavity; 21. Mounting threaded hole; 22. Fixing threaded hole; 23. Fixing bolt; 24. C-shaped guide groove; 25. C-shaped electromagnetic coil; 26. Arc-shaped magnetic block. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] Please see the appendix Figure 1 -Appendix Figure 5This utility model provides an embodiment of a C-arm adjustment mechanism with angle locking function, comprising a main body 1, a connecting arm 2 at one end of the main body 1, a bracket 3 at one end of the connecting arm 2, an inner cavity 4 and a clamping cavity 5 within the bracket 3, a C-shaped arm 6 within the clamping cavity 5, a hidden embedding groove 7 on the outer wall of the C-shaped arm 6, and a toothed strip 8 fixedly connected within the hidden embedding groove 7; a guide gear 9 is provided in the inner cavity 4 corresponding to the position of the toothed strip 8, and a first coaxial gear 10 and a second coaxial gear 11 are fixedly connected to the outer surfaces of both sides of the guide gear 9 for synchronous power transmission. The drive guide gear 9 precisely meshes with the toothed rack 8 for transmission; the first coaxial gear 10 and the second coaxial gear 11 are respectively engaged with the first connecting shaft 12 and the second connecting shaft 13. Fixing posts 15 are fixedly connected to the outer walls of both the first connecting shaft 12 and the second connecting shaft 13. A through hole 16 is provided on one side of the inner wall of the inner cavity 4 at the position corresponding to the first connecting shaft 12. The fixing post 15 enhances the structural stability of the shaft, and the through hole 16 allows the output end of the rotating motor 18 to pass through and connect to the first connecting shaft 12; both the first connecting shaft 12 and the second connecting shaft 13 have internal toothed grooves 14. A bearing 17 is snapped onto the outer side of the shaft column 13. A rotating motor 18 is snapped onto one end of the first connecting shaft column 12. An electromagnetic brake 19 is snapped onto the rear end cover of the rotating motor 18. A protective cavity 20 is provided on the outer side of the rotating motor 18. The internal gear groove 14 engages with the coaxial gear to achieve power transmission. The bearing 17 reduces the rotational friction of the second connecting shaft column 13. The electromagnetic brake 19 locks the transmission shaft. The protective cavity 20 protects the internal motor components. A protective cavity 20 is provided on the outer side of the bracket 3. The protective cavity 20 has a threaded hole 21 for mounting, which is used to fix the protective cavity 20 onto the bracket 3 with a fixing bolt 23. A fixing threaded hole 22 is provided on the outer wall at the position corresponding to the mounting threaded hole 21. A fixing bolt 23 is threaded into both the mounting threaded hole 21 and the fixing threaded hole 22. The protective cavity 20 and the bracket 3 are sealed by tightening the bolts to improve the protective effect. C-shaped guide grooves 24 are provided on both outer surfaces of the C-shaped arm 6. A C-shaped electromagnetic ring 25 is provided in the C-shaped guide groove 24. Arc-shaped magnetic blocks 26 are fixedly connected on both inner walls of the clamping cavity 5 at the positions corresponding to the C-shaped electromagnetic ring 25. The C-shaped guide groove 24 fixes the C-shaped electromagnetic ring 25. After being energized, it attracts the arc-shaped magnetic block 26 to achieve auxiliary locking.

[0017] Working Principle: Using this invention, the bracket 3 is first securely connected to the main body 1 via the connecting arm 2 at one end of the main body 1. The inner cavity 4 of the bracket 3 accommodates the transmission and drive components. The clamping cavity 5 specifically supports the C-shaped arm 6. A toothed strip 8 is fixedly installed in the hidden embedded groove 7 on the outer wall of the C-shaped arm 6, making the toothed strip 8 an integral part of the C-shaped arm 6 without being exposed. The protective cavity 20 on the outer side of the bracket 3 is fastened to the bracket 3 through the cooperation of the mounting threaded hole 21, the fixing threaded hole 22, and the fixing bolt 23, providing a sealing and protective function for the internal rotating motor 18 and electromagnetic brake 19. Simultaneously, C-shaped electromagnetic coils 25 are embedded in the C-shaped guide grooves 24 on both sides of the C-shaped arm 6. Corresponding positions on the inner walls of both sides of the clamping cavity 5 are fixed... The arc-shaped magnetic block 26 and the C-shaped electromagnetic coil 25 are kept in relative positions to complete the initial assembly and structural positioning. When angle adjustment is required, the rotating motor 18 is started. The output end of the rotating motor 18 passes through the through hole 16 and engages with the first connecting shaft 12, driving it to rotate synchronously. The first connecting shaft 12 is precisely engaged with the first coaxial gear 10 on one side of the guide gear disk 9 through the internal tooth groove 14. The fixing post 15 on its outer wall enhances its structural stability. The second coaxial gear 11 on the other side of the guide gear disk 9 is engaged with the second connecting shaft 13 through the internal tooth groove 14. The bearing 17 engaged on the outside of the second connecting shaft 13 reduces the rotational friction resistance. Driven by the rotating motor 18, the first connecting shaft 12, The first coaxial gear 10, guide gear 9, second coaxial gear 11, and second connecting shaft 13 form a complete transmission link. When the guide gear 9 rotates, it meshes with the toothed strip 8 on the C-shaped arm 6, thereby driving the C-shaped arm 6 to adjust its angle along an arc-shaped trajectory within the clamping cavity 5. When the C-shaped arm 6 reaches the target angle, the rotating motor 18 stops operating, and the electromagnetic brake 19, which is engaged with its rear end cover, is immediately activated, directly locking the rotation of the first connecting shaft 12. This prevents angle deviation from the transmission source, forming the first locking mechanism. At the same time, the C-shaped electromagnetic coil 25 in the C-shaped guide groove 24 is energized to generate magnetic force, which attracts the arc-shaped magnetic block 26 on the inner wall of the clamping cavity 5. The electromagnetic force is applied evenly from both sides of the C-shaped arm 6. The locking force forms a second layer of locking, while the guide toothed disc 9 and the toothed bar 8 always remain engaged. The mechanical hard meshing structure restricts any displacement tendency of the C-shaped arm 6, forming a third layer of locking. The structural reinforcement of the first connecting shaft 12 and the second connecting shaft 13 by the fixed column 15 and the sealing protection of the protective cavity 20 further ensure the stability of the locking state. When the angle needs to be adjusted again, the C-shaped electromagnetic coil 25 is de-energized so that its attraction force with the arc-shaped magnetic block 26 disappears. At the same time, the electromagnetic brake 19 is unlocked to release the lock on the first connecting shaft 12. The rotating motor 18 is restarted to repeat the above transmission process, which can drive the C-shaped arm 6 to adjust the angle again, realizing the cycle of adjustment, locking, unlocking and resetting.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not 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 C-arm adjustment mechanism with angle locking function, comprising a main body (1), characterized in that: One end of the main body (1) is provided with a connecting arm (2), and one end of the connecting arm (2) is provided with a bracket (3). The bracket (3) has an inner cavity (4) and a clamping cavity (5). The clamping cavity (5) has a C-shaped arm (6). The outer wall of the C-shaped arm (6) has a hidden embedding groove (7). A toothed strip (8) is fixedly connected in the hidden embedding groove (7).

2. The C-arm adjustment mechanism with angle locking function according to claim 1, characterized in that: A guide gear (9) is provided in the inner cavity (4) at the position corresponding to the toothed bar (8). A first coaxial gear (10) and a second coaxial gear (11) are fixedly connected to the outer surfaces of both sides of the guide gear (9).

3. The C-arm adjustment mechanism with angle locking function according to claim 2, characterized in that: The first coaxial gear (10) and the second coaxial gear (11) are respectively connected to the first connecting shaft (12) and the second connecting shaft (13). The outer walls of the first connecting shaft (12) and the second connecting shaft (13) are fixedly connected to the fixing column (15). A through hole (16) is opened on one side of the inner wall of the cavity (4) at the position corresponding to the first connecting shaft (12).

4. The C-arm adjustment mechanism with angle locking function according to claim 3, characterized in that: The first connecting shaft (12) and the second connecting shaft (13) are both provided with internal tooth grooves (14). The outer side of the second connecting shaft (13) is fitted with a bearing (17). One end of the first connecting shaft (12) is fitted with a rotating motor (18). The rear end cover of the rotating motor (18) is fitted with an electromagnetic brake (19). The outer side of the rotating motor (18) is provided with a protective cavity (20).

5. A C-arm adjustment mechanism with angle locking function according to claim 1, characterized in that: The bracket (3) has a protective cavity (20) on its outer side, and the protective cavity (20) has a threaded hole (21).

6. A C-arm adjustment mechanism with angle locking function according to claim 5, characterized in that: The bracket (3) has a fixing threaded hole (22) on its outer wall corresponding to the mounting threaded hole (21). Both the mounting threaded hole (21) and the fixing threaded hole (22) are threaded with fixing bolts (23).

7. A C-arm adjustment mechanism with angle locking function according to claim 1, characterized in that: C-shaped guide grooves (24) are provided on both outer surfaces of the C-shaped arm (6). C-shaped electromagnetic coils (25) are provided in the C-shaped guide grooves (24). Arc-shaped magnetic blocks (26) are fixedly connected to the inner walls of both sides of the clamping cavity (5) at positions corresponding to the C-shaped electromagnetic coils (25).

Images