Elbow joint protector capable of resisting forearm pronation

Abstract

The invention provides an elbow joint protector capable of resisting forearm pronation, and relates to the technical field of medical protectors, the elbow joint protector comprises a first protection plate and a second protection plate, and the first protection plate and the second protection plate are provided with limiting mechanisms facilitating adjustment of the elbow fixing angle of a patient; adjusting mechanisms facilitating rehabilitation exercise of the patient are arranged on the first protective plate and the second protective plate, each limiting mechanism comprises an adjusting disc and a fixing block, each adjusting mechanism comprises a rack, a rotating ring and a clamping block, a first rotating shaft is fixedly installed at the side end of the first protective plate, and a second rotating shaft is fixedly installed at the side end of the second protective plate. And a first spring is fixedly mounted between the adjusting disc and the first rotating shaft. According to the device, the locking state and the unlocking state are set, in the initial stage of injury, the device is in the locking state, provided supporting can effectively stabilize the elbow and prevent the injured part from further moving or being secondarily injured, and in the subsequent rehabilitation state, the device can be in the unlocking state to help a patient to gradually increase the movement range of the elbow.

Description

Technical Field

[0001] The invention belongs to the technical field of medical protective gear, and more specifically, particularly relates to an anti-forearm pronation elbow joint protective gear. Background Art

[0002] The anti-pronation elbow brace is a medical auxiliary device specially designed to limit the pronation movement of the forearm and provide support and protection for the elbow joint.

[0003] The Chinese patent publication number is: CN114642534A, anti-forearm pronation elbow joint protector, the inner side of the distal strap of the invention is fixed with a distal flexible limiting groove for limiting the radius, and at least two distal flexible limiting grooves are arranged along the length direction of the proximal strap; the forearm set also includes a limiting sleeve, and the inner wall of the limiting sleeve is detachably connected to the limiting belt through bristle adhesive. The invention realizes the control of the degree of forearm pronation and limits the rotation of the forearm to a suitable functional position.

[0004] The existing elbow protectors have the following disadvantages when used:

[0005] 1. Existing elbow braces usually only play a supporting and protective role for the joints. In the later stage of rehabilitation, they cannot achieve auxiliary rehabilitation of the patient's elbow, which limits the scope of use of the braces and can only play a simple supporting and protective role.

[0006] 2. The existing elbow joint protectors have fixed resistance during actual adjustment and rotation. However, the resistance required for rehabilitation training varies at different stages of the patient's rehabilitation. Fixed resistance is not conducive to assisting patients in rehabilitation at different stages and is not conducive to the patient's elbow muscle training.

[0007] In view of this, the existing structure and defects are studied and improved, and an anti-forearm pronation elbow joint protector is provided, in order to achieve the purpose of having more practical value. Summary of the invention

[0008] In order to solve the above technical problems, the present invention provides an anti-forearm pronation elbow joint protector to solve the above problems.

[0009] An anti-forearm pronation elbow brace comprises a first guard plate and a second guard plate, wherein the first guard plate and the second guard plate are provided with a limiting mechanism for adjusting the fixed angle of the patient's elbow, and the first guard plate and the second guard plate are provided with an adjusting mechanism for facilitating the patient's rehabilitation exercise, wherein the limiting mechanism comprises an adjusting disk and a fixing block, and the adjusting mechanism comprises a rack, a rotating ring and a clamping block, a first rotating shaft is fixedly installed on the side end of the first guard plate, a first spring is fixedly installed between the adjusting disk and the first rotating shaft, and a telescopic rod is also fixedly installed between the adjusting disk and the first rotating shaft, and the telescopic rod is located at The inner side wall of the first spring, the fixed block is fixedly installed on the side end of the second guard plate, the side end of the second guard plate is provided with a mounting groove, the rack is located on the inner side wall of the mounting groove, the rotating ring is rotatably installed on the inner side wall of the mounting groove, the number of the clamping blocks is three, and the three clamping blocks are respectively arranged in an array on the inner side wall of the mounting groove, a third spring is fixedly installed between each clamping block and the mounting groove, two arm fixing rings are fixedly installed on the side ends of the first guard plate and the second guard plate, a rope threading ring is fixedly installed on the side end of the first guard plate, and a first The first guard plate is provided with a second rotating shaft, the second rotating shaft is fixedly installed on the circumferential end of the second rotating shaft, the adjusting disk is provided with two limit pins, the adjusting disk is provided with a pull rod, the second guard plate is provided with a side groove, the second guard plate is provided with a circular groove, the second guard plate is provided with a plurality of limit grooves in an array on the side end, the first rotating shaft and the rubber ring are both rotatably installed on the inner side wall of the circular groove, the mounting plate is hingedly installed on the side end of the mounting groove, and the upper end of the inner side wall of the mounting groove is provided with a The cam is provided with an inner slide groove, and the side end portion of the second guard plate is also penetrated by a cylindrical groove, the limit pin is slidably installed on the inner side wall of the limit groove, the upper end portion of the fixed block is penetrated by a rectangular groove, the inner side wall of the rectangular groove is slidably installed with a baffle, the upper end portion of the baffle is fixedly installed with a cross plate, the second spring is fixedly installed between the cross plate and the fixed block, the side end portion of the rack is penetrated by a threaded groove, the upper end portion of the rack is fixedly installed with a sliding rod, the sliding rod is slidably installed on the inner side wall of the inner slide groove, the inner side wall of the cylindrical groove is rotatably installed with a threaded rod, and the threaded rod is threadedly rotatably installed on the inner side wall of the threaded groove.

[0010] Preferably, a plurality of pressing blocks are fixedly mounted in an array on the side end of the rotating ring, the end of each pressing block is arc-shaped, and each pressing block is located on the outer side wall of each clamping block.

[0011] Preferably, a same gear is fixedly mounted on the side end of each pressing block, and the gear is meshed with the rack.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. In the present invention, by providing a first guard plate and a second guard plate with adjustable angles, when fixing the patient's elbow, it can be adjusted according to the patient's specific condition and rehabilitation stage, while providing support and protection, it can ensure a more comfortable and appropriate fixing angle, thereby improving the flexibility of the equipment and making it suitable for use in different scenarios.

[0014] 2. In the present invention, a first spring, an adjusting disk, a limit pin and a baffle are provided to cooperate with each other, the limit pin is inserted into the limit groove, and the adjusting disk is limited by the baffle, so as to achieve a more stable locking between the second guard plate and the first guard plate. The stable angle locking can effectively limit forearm pronation and other unnecessary elbow movements, reduce the risk of re-injury, and ensure the stability of the device when worn.

[0015] 3. In the present invention, by providing two states of locking and unlocking, in the early stage of injury, the device is in a locked state, and the support provided can effectively stabilize the elbow and prevent the injured part from further moving or suffering secondary injury. In the subsequent rehabilitation state, the device can be in an unlocked state to help the patient gradually increase the range of motion of the elbow, provide sensory feedback of the arm, enhance muscle strength, and prevent re-injury, so that the protective gear has a wider range of adaptability.

[0016] 4. In the present invention, a pressure block, a clamping block and a rubber ring are matched with each other, and the clamping block is clamped on the circumferential end of the rubber ring, so that when the first guard plate drives the rubber ring on the second rotating shaft to rotate, friction is generated with the clamping block, providing a certain resistance, thereby assisting the patient in performing rehabilitation exercises during the later recovery. The setting of a certain resistance can ensure the stability of the activity while promoting the patient's exercise of muscle groups and ensuring the rehabilitation effect.

[0017] 5. In the present invention, by cooperating with an adjustable pressure block, a rotating ring and a gear, at different rehabilitation stages of the patient, the rack can be driven to move by rotating the threaded rod, thereby driving each pressure block to rotate through the gear, applying different clamping forces to the clamping block, and changing the resistance between the first guard plate and the second guard plate during rotation, such as setting a smaller resistance in the early stage of rehabilitation and setting a larger resistance in the later stage of rehabilitation, thereby providing appropriate resistance requirements to the patient at different rehabilitation times to better assist the patient in rehabilitation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the first guard plate of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of the second guard plate of the present invention;

[0020] Figure 3 is a schematic diagram of the structure of the second rotating shaft of the present invention;

[0021] Figure 4 It is a schematic diagram of the exploded structure of the first guard plate of the present invention;

[0022] Figure 5 It is a schematic diagram of the exploded structure of the regulating disk of the present invention;

[0023] Figure 6 It is a schematic diagram of the structure of the fixed block of the present invention;

[0024] Figure 7 It is a schematic diagram of the exploded structure of the second guard plate of the present invention;

[0025] Figure 8 It is a schematic diagram of the structure of the clamping block of the present invention;

[0026] Fig. 9 It is a schematic diagram of the exploded structure of the rotating ring of the present invention;

[0027] Fig.10 The present invention Figure 7 A schematic diagram of the enlarged structure.

[0028] In the figure, the corresponding relationship between the component names and the figure numbers is: 1. first guard plate; 11. arm fixing ring; 12. rope threading ring; 13. first rotating shaft; 14. second rotating shaft; 15. rubber ring; 2. adjustment disk; 21. first spring; 22. limit pin; 23. pull rod; 24. telescopic rod; 3. second guard plate; 31. side groove; 32. circular groove; 33. limit groove; 34. installation groove; 35. inner slide groove; 36. cylindrical groove; 37. installation plate; 4. fixing block; 41. rectangular groove; 42. horizontal plate; 43. second spring; 44. baffle; 5. rack; 51. threaded groove; 52. threaded rod; 53. slide rod; 6. rotating ring; 61. pressure block; 62. gear; 7. clamping block; 71. third spring. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0030] See also Figure 1 - Fig.10The present invention provides an anti-forearm pronation elbow joint brace, comprising a first guard plate 1 and a second guard plate 3. The first guard plate 1 and the second guard plate 3 are provided with a limiting mechanism for adjusting the fixed angle of the patient's elbow. The first guard plate 1 and the second guard plate 3 are provided with an adjusting mechanism for facilitating the patient's rehabilitation exercise. The limiting mechanism comprises an adjusting disk 2 and a fixing block 4. The adjusting mechanism comprises a rack 5, a rotating ring 6 and a clamping block 7. When the patient is in the subsequent rehabilitation stage, the patient needs to perform a certain amount of exercise. At this time, the second guard plate 3 and the adjusting disk 2 can be adjusted to an unlocked state. In the unlocked state, the patient can move his forearm by himself to achieve rehabilitation training between the upper arm, the forearm and the elbow. The device is set with two states, locked and unlocked. In the early stage of injury, the device is in a locked state, and the support provided can effectively stabilize the elbow to prevent the injured part from further moving or suffering secondary injury. In the subsequent rehabilitation state, the device can be in an unlocked state to help the patient gradually increase the range of motion of the elbow, provide sensory feedback of the arm, enhance muscle strength, and prevent re-injury, so that the adaptability range of the brace is wider.

[0031] A first rotating shaft 13 is fixedly installed on the side end of the first guard plate 1, a first spring 21 is fixedly installed between the adjusting disk 2 and the first rotating shaft 13, a telescopic rod 24 is also fixedly installed between the adjusting disk 2 and the first rotating shaft 13, and the telescopic rod 24 is located on the inner side wall of the first spring 21, a fixed block 4 is fixedly installed on the side end of the second guard plate 3, a mounting groove 34 is opened on the side end of the second guard plate 3, a rack 5 is located on the inner side wall of the mounting groove 34, a rotating ring 6 is rotatably installed on the inner side wall of the mounting groove 34, there are three clamping blocks 7, and the three clamping blocks 7 are respectively arranged on the inner side wall of the mounting groove 34, a third spring 71 is fixedly installed between each clamping block 7 and the mounting groove 34, two arm fixing rings 11 are fixedly installed on the side ends of the first guard plate 1 and the second guard plate 3, and a rope threading device is fixedly installed on the side end of the first guard plate 1 Ring 12, the side end of the first guard plate 1 is fixedly installed with a first rotating shaft 13, the side end of the first guard plate 1 is also fixedly installed with a second rotating shaft 14, the circumferential end of the second rotating shaft 14 is fixedly installed with a rubber ring 15, the side end of the adjusting disk 2 is fixedly installed with two limit pins 22, and the side end of the adjusting disk 2 is also fixedly installed with a pull rod 23. At this time, the user can pull the pull rod 23, and the movement of the pull rod 23 drives the adjusting disk 2 to move. The movement of the adjusting disk 2 will lengthen the first spring 21 and the telescopic rod 24. After the movement of the adjusting disk 2 drives the limit pin 22 to leave the inner side wall of the limit groove 33, the user can release the cross plate 42, and the second spring 43 will rebound to drive the cross plate 42 and the baffle 44 to move downward and reset, and get stuck in the inner side of the adjusting disk 2 to limit the adjusting disk 2. At this time, the second guard plate 3 and the adjusting disk 2 are in an unlocked state;

[0032] The side end of the second guard plate 3 is provided with a side groove 31, the side end of the second guard plate 3 is penetrated with a circular groove 32, the side end of the second guard plate 3 is also provided with a plurality of limit grooves 33 in an array, the first rotating shaft 13 and the rubber ring 15 are both rotatably mounted on the inner side wall of the circular groove 32, the side end of the mounting groove 34 is hingedly mounted with a mounting plate 37, the upper end of the inner side wall of the mounting groove 34 is provided with an inner sliding groove 35, the side end of the second guard plate 3 is also penetrated with a cylindrical groove 36, the limit pin 22 is slidably mounted on the inner side wall of the limit groove 33, the upper end of the fixing block 4 is penetrated with a rectangular groove 41, the inner side of the rectangular groove 41 The wall is slidably mounted with a baffle plate 44, and a transverse plate 42 is fixedly mounted on the upper end of the baffle plate 44. A second spring 43 is fixedly mounted between the transverse plate 42 and the fixing block 4. When the user fixes the device, each arm fixing ring 11 on the first guard plate 1 and the second guard plate 3 can be clamped and fixed on the upper arm and the lower arm of the patient. The user can adjust the angle between the first guard plate 1 and the second guard plate 3 according to the actual fixing needs of the patient. During the adjustment, the user can pull the transverse plate 42 to drive the baffle plate 44 to move upward. The movement of the baffle plate 44 will leave the side end of the adjustment disk 2, and the second spring 43 will be stretched;

[0033] A threaded groove 51 is formed through the side end of the rack 5, and a slide bar 53 is fixedly installed on the upper end of the rack 5. The slide bar 53 is slidably installed on the inner side wall of the inner slide groove 35. A threaded rod 52 is rotatably installed on the inner side wall of the cylindrical groove 36. The threaded rod 52 is threadedly rotatably installed on the inner side wall of the threaded groove 51. The user can adjust the rotation resistance between the first guard plate 1 and the second guard plate 3. The user can rotate the threaded rod 52 forward or reversely. The threaded rod 52 rotates through the threaded groove 51 to drive the rack 5 to move. The movement of the rack 5 drives the slide bar 53 to slide in the inner slide groove 35. When the rack 5 slides, it drives the gear 62 to rotate forward or reversely.

[0034] A plurality of pressing blocks 61 are fixedly installed in an array at the side end of the rotating ring 6. The end of each pressing block 61 is arc-shaped. Each pressing block 61 is located on the outer side wall of each clamping block 7. The same gear 62 is fixedly installed at the side end of each pressing block 61. The gear 62 is meshed with the rack 5. The rotation of the gear 62 drives the two pressing blocks 61 to rotate. The rotation of each pressing block 61 drives the rotating ring 6 to rotate in the installation groove 34 to attach Figure 8 and attached Fig. 9 For example, when each pressing block 61 rotates clockwise, the smaller the pressure applied by each pressing block 61 to the clamping block 7, the third spring 71 will rebound and pull the clamping block 7 gradually away from the rubber ring 15, and the resistance will be smaller at this time; when each pressing block 61 rotates clockwise, the greater the pressure applied by each pressing block 61 to the clamping block 7, the clamping block 7 will clamp the rubber ring 15 more tightly under pressure, and the resistance will be greater at this time, thereby providing different resistances when the patient moves during different rehabilitation periods.

[0035] Working principle:

[0036] The first step is that for certain situations where the forearm is over-pronated due to muscle strength imbalance, nerve damage or postoperative rehabilitation, the use of a fixed brace can effectively limit this movement and help maintain the forearm in a normal functional position. The user can clamp the arm fixing ring 11 on the first guard plate 1 and the second guard plate 3 to the patient's upper arm and forearm, and fix the lanyard hanging around the neck to the rope ring 12. According to the patient's specific fixation needs, the angle between the first guard plate 1 and the second guard plate 3 is adjusted. After adjusting the angle of the first guard plate 1 and the second guard plate 3 to a suitable position, the user can lock the angle between the first guard plate 1 and the second guard plate 3. After subsequent rehabilitation training, the user can unlock the angle between the first guard plate 1 and the second guard plate 3. At the same time, according to the rehabilitation needs of different periods, the rotational resistance between the first guard plate 1 and the second guard plate 3 is adjusted so that the patient can perform better rehabilitation training.

[0037] In the second step, when the user fixes the device, each arm fixing ring 11 on the first guard plate 1 and the second guard plate 3 can be clamped and fixed on the patient's upper arm and forearm. The user can adjust the angle between the first guard plate 1 and the second guard plate 3 according to the patient's actual fixing needs. During the adjustment, the user can pull the cross plate 42 to drive the baffle plate 44 to move upward. The movement of the baffle plate 44 will leave the side end of the adjusting disk 2, and the second spring 43 will be stretched. At this time, the user can pull the pull rod 23, and the movement of the pull rod 23 will drive the adjusting disk 2 to move. The movement of the adjusting disk 2 will stretch the first spring 21 and the telescopic rod 24. After the movement of the adjusting disk 2 drives the limit pin 22 to leave the inner wall of the limit groove 33, the user can release the cross plate 42, and the second spring 43 will rebound to drive the cross plate 42 and the baffle 44 to move downward and reset. , stuck in the inner position of the adjusting disk 2, limiting the adjusting disk 2, at this time, the second guard plate 3 and the adjusting disk 2 are in an unlocked state, and the user can rotate the adjusting disk 2, and the rotation of the adjusting disk 2 drives the first rotating shaft 13 to rotate through the telescopic rod 24 and the first spring 21, and the rotation of the first rotating shaft 13 drives the first guard plate 1 to rotate, so as to adjust the angle between the first guard plate 1 and the second guard plate 3. After adjusting the angle between the first guard plate 1 and the second guard plate 3 to a suitable position, the user can pull the fixing block 4 upward again. At this time, the first spring 21 and the telescopic rod 24 will drive the adjusting disk 2 to move and reset, and the limiting pin 22 on the adjusting disk 2 will be inserted into the limiting groove 33 again, limiting the first rotating shaft 13 and the first guard plate 1, and completing the angle locking between the first guard plate 1 and the second guard plate 3;

[0038] The device is provided with a first guard plate 1 and a second guard plate 3 that can be adjusted in angle. When fixing the patient's elbow, the device can be adjusted according to the patient's specific condition and rehabilitation stage, thereby providing support and protection while ensuring a more comfortable and appropriate fixing angle, thereby improving the flexibility of the device and being suitable for use in different scenarios.

[0039] The device cooperates with the first spring 21, the adjustment disk 2, the limit pin 22 and the baffle 44, and the limit pin 22 is inserted into the limit groove 33, and the baffle 44 is used to limit the adjustment disk 2, so as to achieve a more stable locking between the second guard plate 3 and the first guard plate 1. The stable angle locking can effectively limit the forearm pronation and other unnecessary elbow movements, reduce the risk of re-injury, and ensure the stability of the device when worn;

[0040] The third step is that when the patient is in the subsequent rehabilitation stage, the patient needs to do a certain amount of exercise. At this time, the second guard plate 3 and the adjustment disk 2 can be adjusted to the unlocked state. In the unlocked state, the patient can move the forearm by himself to achieve rehabilitation training between the upper arm, forearm and elbow;

[0041] The device is set up with two states: locked and unlocked. In the early stage of injury, the device is in the locked state, and the support provided can effectively stabilize the elbow and prevent the injured part from further moving or suffering secondary injury. In the subsequent rehabilitation state, the device can be in the unlocked state to help patients gradually increase the range of motion of the elbow, provide sensory feedback of the arm, enhance muscle strength, and prevent re-injury, making the protective gear more adaptable.

[0042] The fourth step is that when the patient is undergoing rehabilitation training, a certain amount of resistance needs to be provided when the forearm is bent. After an elbow injury, the surrounding muscles may atrophy or weaken. Setting resistance during rehabilitation training can strengthen training for specific muscle groups. When performing forearm pronation and supination movements, the resistance can stimulate the pronator teres, supinator and other muscles, improve the control of these muscles over the elbow joint, and reduce joint instability factors. Different resistances are required at different rehabilitation stages. For example, in the early stages of rehabilitation, smaller resistance is required. Low resistance can help patients perform slight activities and promote blood circulation. In the later stages of rehabilitation, patients need more resistance. The tissue of the patient has been basically healed, and the stability and flexibility of the joint have also been greatly improved. At this time, the rehabilitation resistance can be increased to further enhance muscle strength and endurance. Therefore, the user can adjust the rotation resistance between the first guard plate 1 and the second guard plate 3. The user can rotate the threaded rod 52 forward or reversely. The threaded rod 52 rotates through the thread groove 51 to drive the rack 5 to move. The rack 5 moves and drives the slide bar 53 to slide in the inner slide groove 35. When the rack 5 slides, it drives the gear 62 to rotate forward or reversely. The rotation of the gear 62 drives the two pressing blocks 61 to rotate. The rotation of each pressing block 61 drives the rotating ring 6 to rotate in the installation groove 34 to attach Figure 8 and attached Fig. 9 For example, when each pressing block 61 rotates clockwise, the smaller the pressure applied by each pressing block 61 to the clamping block 7, the third spring 71 will rebound and pull the clamping block 7 gradually away from the rubber ring 15, and the resistance will be smaller at this time; when each pressing block 61 rotates clockwise, the greater the pressure applied by each pressing block 61 to the clamping block 7, the clamping block 7 will clamp the rubber ring 15 more tightly under pressure, and the resistance will be greater at this time, so as to provide different resistances when the patient moves during different rehabilitation periods;

[0043] The device is provided with a pressure block 61, a clamping block 7 and a rubber ring 15, and the clamping block 7 is clamped on the circumferential end of the rubber ring 15, so that when the first guard plate 1 drives the rubber ring 15 on the second rotating shaft 14 to rotate, friction is generated with the clamping block 7, providing a certain resistance, thereby assisting the patient to perform rehabilitation exercises during the later recovery. The setting of a certain resistance can ensure the stability of the activity, and can also promote the patient's exercise of muscle groups, thereby ensuring the rehabilitation effect;

[0044] The device cooperates with an adjustable pressure block 61, a rotating ring 6 and a gear 62. During different rehabilitation periods of the patient, the rack 5 can be driven to move by rotating the threaded rod 52, thereby driving each pressure block 61 to rotate through the gear 62, applying different clamping forces to the clamping block 7, and changing the resistance between the first guard plate 1 and the second guard plate 3 during rotation. For example, a smaller resistance is set in the early stage of rehabilitation and a larger resistance is set in the later stage of rehabilitation. Thus, appropriate resistance requirements are provided to the patient at different rehabilitation times to better assist the patient in rehabilitation.

[0045] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. An anti-forearm pronation elbow joint protector, comprising a first guard plate (1) and a second guard plate (3), characterized in that: The first guard plate (1) and the second guard plate (3) are provided with a limit mechanism for adjusting the fixed angle of the patient's elbow, and the first guard plate (1) and the second guard plate (3) are provided with an adjustment mechanism for facilitating the patient to perform rehabilitation exercises; The limiting mechanism comprises an adjusting disk (2) and a fixed block (4), the adjusting mechanism comprises a rack (5), a rotating ring (6) and a clamping block (7), a first rotating shaft (13) is fixedly mounted on the side end of the first guard plate (1), a first spring (21) is fixedly mounted between the adjusting disk (2) and the first rotating shaft (13), a telescopic rod (24) is also fixedly mounted between the adjusting disk (2) and the first rotating shaft (13), and the telescopic rod (24) is located on the inner side wall of the first spring (21), The fixed block (4) is fixedly mounted on the side end of the second guard plate (3); a mounting groove (34) is provided on the side end of the second guard plate (3); the rack (5) is located on the inner side wall of the mounting groove (34); the rotating ring (6) is rotatably mounted on the inner side wall of the mounting groove (34); there are three clamping blocks (7); the three clamping blocks (7) are respectively arranged in an array on the inner side wall of the mounting groove (34); and a third spring (71) is fixedly mounted between each clamping block (7) and the mounting groove (34).

2. The anti-forearm pronation elbow joint protector according to claim 1, characterized in that: Two arm fixing rings (11) are fixedly mounted on the side ends of the first guard plate (1) and the second guard plate (3); a rope threading ring (12) is fixedly mounted on the side end of the first guard plate (1); and a first rotating shaft (13) is fixedly mounted on the side end of the first guard plate (1); A second rotating shaft (14) is fixedly mounted on the side end of the first guard plate (1), and a rubber ring (15) is fixedly mounted on the circumferential end of the second rotating shaft (14).

3. The anti-forearm pronation elbow joint protector as claimed in claim 2, characterized in that: Two limit pins (22) are fixedly mounted on the side end of the adjusting disk (2), and a pull rod (23) is also fixedly mounted on the side end of the adjusting disk (2).

4. The anti-forearm pronation elbow joint protector as claimed in claim 3, characterized in that: The side end of the second guard plate (3) is provided with a side groove (31), the side end of the second guard plate (3) is provided with a circular groove (32) extending through the side end, and the side end of the second guard plate (3) is also provided with a plurality of limiting grooves (33) in an array; Wherein, the first rotating shaft (13) and the rubber ring (15) are both rotatably mounted on the inner side wall of the circular groove (32).

5. The anti-forearm pronation elbow joint protector as claimed in claim 4, characterized in that: A mounting plate (37) is hingedly mounted on the side end of the mounting groove (34), an inner sliding groove (35) is provided on the upper end of the inner side wall of the mounting groove (34), and a cylindrical groove (36) is also provided through the side end of the second guard plate (3); Wherein, the limiting pin (22) is slidably mounted on the inner side wall of the limiting groove (33).

6. The anti-forearm pronation elbow joint protector as claimed in claim 5, characterized in that: A rectangular groove (41) is formed through the upper end of the fixed block (4), a baffle (44) is slidably mounted on the inner side wall of the rectangular groove (41), and a transverse plate (42) is fixedly mounted on the upper end of the baffle (44); Wherein, a second spring (43) is fixedly installed between the transverse plate (42) and the fixed block (4).

7. The anti-forearm pronation elbow joint protector according to claim 6, characterized in that: A threaded groove (51) is formed through the side end of the rack (5), and a slide bar (53) is fixedly mounted on the upper end of the rack (5), wherein the slide bar (53) is slidably mounted on the inner side wall of the inner slide groove (35).

8. The anti-forearm pronation elbow joint protector as claimed in claim 7, characterized in that: A threaded rod (52) is rotatably mounted on the inner side wall of the cylindrical groove (36), and the threaded rod (52) is threadably mounted on the inner side wall of the threaded groove (51).

9. The anti-forearm pronation elbow joint protector as claimed in claim 8, characterized in that: A plurality of pressing blocks (61) are fixedly mounted in an array on the side end of the rotating ring (6), the end of each pressing block (61) is arc-shaped, and each pressing block (61) is located on the outer side wall of each clamping block (7).

10. The anti-forearm pronation elbow joint protector according to claim 9, characterized in that: The same gear (62) is fixedly mounted on the side end of each pressing block (61), and the gear (62) is meshed with the rack (5).

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