Elbow joint limiting device with adjustable bending angle

Abstract

The utility model relates to the technical field of elbow joint nursing, in particular to an elbow joint limiting device with an adjustable bending angle, which comprises an upper arm support plate and a lower arm support plate, a worm is rotatably connected to the inside of an adjusting plate, a spring rod is fixedly connected to the inside of the adjusting plate, a translation seat is in threaded connection with the outside of a threaded screw rod, and a spring rod is fixedly connected to the outside of the translation seat. A first supporting rod is rotationally connected to the front face of the translation seat, and a second supporting rod is hinged to the top of the limiting block. According to the elbow joint limiting device capable of adjusting the bending angle, a worm is rotated through a spinning roller, so that a threaded lead screw drives a translation seat to slide left and right on a lead screw, meanwhile, a buffer spring outside the lead screw can decelerate the translation seat, and a first supporting rod pushes an upper arm supporting plate to adjust the angle; at the moment, the limiting block and the second supporting rod synchronously slide on the adjusting rod, after the adjusting rod is adjusted to a proper angle, the adjusting rod and the limiting block are fixed and limited through the positioning pin rod, and angle fixing of the upper arm supporting plate and the lower arm supporting plate is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of elbow joint care, in particular to an elbow joint limiting device with adjustable bending angle. Background Technique

[0002] The elbow joint is composed of the distal end of the humerus and the proximal articular surfaces of the radius and ulna. Structurally, it includes three joints, which are jointly enclosed in a joint capsule. It is an important part for maintaining the bending movement of the arm. However, when the arm is in a strenuous exercise state or there is an accidental impact trauma to the elbow joint, it may cause a fracture and injury to the elbow joint bones. In order to promote the healing and growth of the damaged part of the elbow joint, the elbow joint cannot or needs to reduce activities within a certain period of time. At this time, it is necessary to use an elbow joint limiting device to support and fix the elbow joint part, so as to effectively help the patient recover from the injury faster.

[0003] After retrieval, a utility model patent with the Chinese patent publication number CN216570162U discloses an elbow joint angle adjustable positioning bracket. In this utility model patent, the elbow joint angle adjustable positioning bracket adjusts the angle position by rotating the upper bracket and the lower bracket through a rotating shaft, and then rotates the rotating rod through a connecting shaft to engage the stop block with the stop disk, so as to fix the angle of the upper bracket and the lower bracket. However, considering the structure of the stop disk and the stop block, the stop block is engaged with the outer side of the stop disk after rotation. However, there is no limiting structure for the stop block on the stop disk. During the use process by the patient, the stop block may rotate and shift again, resulting in the loss of the engagement state with the stop disk. At this time, the upper bracket and the lower bracket are prone to angle rotation. Therefore, the angle adjustment structure of this elbow joint angle adjustable positioning bracket needs to be further improved. Therefore, an elbow joint limiting device with adjustable bending angle is proposed. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an elbow joint limiting device with adjustable bending angle, which has the advantage of being convenient for limiting and fixing after the angle is bent and adjusted, and solves the problem that the elbow joint angle adjustable positioning bracket in the above background technology is prone to change the angle of the elbow joint bracket again because the stop disk cannot limit the stop block.

[0005] To achieve the above object, the utility model provides the following technical solution: An elbow joint limiting device with adjustable bending angle, including an upper arm support plate, a sponge pad is fixedly connected to the bottom of the upper arm support plate, a lower arm support plate is fixedly connected to the left side of the sponge pad, and a limiting and adjusting structure is arranged on the outer side of the lower arm support plate;

[0006] The limit adjustment structure includes an adjustment plate, a worm, a threaded lead screw, a spring rod, a translation seat, a first support rod, an adjustment rod, a limit block, and a second support rod. The front of the upper arm support plate is fixedly connected with the adjustment plate. The adjustment plate internally rotatably connects the worm. The adjustment plate internally rotatably connects the threaded lead screw. The adjustment plate internally fixedly connects the spring rod. The outer part of the threaded lead screw is threadedly connected with the translation seat. The front of the translation seat rotatably connects the first support rod. The back of the lower arm support plate is fixedly connected with the adjustment rod. The outer part of the adjustment rod slidably connects the limit block. The top of the limit block is hinged with the second support rod.

[0007] Furthermore, the left side of the top of the adjustment plate rotatably connects a rotating wheel. The bottom of the rotating wheel is fixedly connected with the top of the worm. The number of the threaded lead screws is two. The outer sides of the left ends of the two threaded lead screws are both coaxially fixedly provided with worm gear shaft structures. Both of the two worm gears are meshed with the outer side of the worm.

[0008] Furthermore, the outer parts of the two threaded lead screws are threadedly connected with threaded sleeve blocks. The two threaded sleeve blocks are respectively connected with the top and the bottom of the translation seat. A circular hole structure that penetrates horizontally from left to right is opened inside the translation seat.

[0009] Furthermore, the spring rod includes a lead screw fixedly connected inside the adjustment plate. Buffer springs are sleeved on the outer sides of the left and right ends of the lead screw. The translation seat is slidably connected with the lead screw through the circular hole, and the left and right sides of the translation seat are respectively fixedly connected with the opposite ends of the two buffer springs.

[0010] Furthermore, the top of the first support rod is rotatably connected with the front of the upper arm support plate. A plurality of threaded holes are opened inside the adjustment rod. A limit hole adapted to the threaded hole is opened on the back of the limit block. A positioning pin rod is threadedly connected inside the limit hole.

[0011] Furthermore, the top of the second support rod is rotatably connected with the back of the upper arm support plate. A plurality of elastic bands are fixedly connected to the left side of the upper arm support plate and the top of the lower arm support plate.

[0012] Beneficial Effects

[0013] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0014] The elbow joint limiting device with adjustable bending angle rotates the worm through a rotating wheel, and uses the worm meshing to drive the worm wheel shaft structure of the threaded lead screw, so that the threaded lead screw drives the translation seat to slide left and right on the lead screw. At the same time, the buffer spring outside the lead screw can decelerate the translation seat. The first support rod pushes the upper arm support plate for angle adjustment. At this time, the limit block and the second support rod will slide on the adjustment rod synchronously. When adjusted to the appropriate angle, the positioning pin rod is inserted into the positioning hole and the threaded hole to fix and limit the adjustment rod and the limit block, so as to realize the angle fixation of the upper arm support plate and the lower arm support plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present invention;

[0016] Figure 2 is Figure 1 the front view from the

[0017] Figure 3 is Figure 1 the rear view from the

[0018] Figure 4 is Figure 2 the schematic diagram of the adjustment plate structure in the

[0019] In the figure: 1. upper arm support plate; 2. sponge pad; 3. lower arm support plate; 4. limit adjustment structure; 401. adjustment plate; 402. worm; 403. threaded lead screw; 404. spring rod; 4041. lead screw; 4042. buffer spring; 405. translation seat; 406. first support rod; 407. adjustment rod; 408. limit block; 409. second support rod; 5. elastic band. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1-4 , an elbow joint limiting device with adjustable bending angle, including an upper arm support plate 1. A sponge pad 2 is fixedly connected to the bottom of the upper arm support plate 1. The sponge pad 2 can provide flexible protection for the elbow joint. A lower arm support plate 3 is fixedly connected to the left side of the sponge pad 2. A limit adjustment structure 4 is arranged on the outer side of the lower arm support plate 3. A plurality of elastic bands 5 are fixedly connected to both the left side of the upper arm support plate 1 and the top of the lower arm support plate 3. The upper arm support plate 1 and the lower arm support plate 3 are respectively fixed to the arm part by the elastic bands 5.

[0022] The limit adjustment structure 4 includes an adjustment plate 401, a worm 402, a threaded lead screw 403, a spring rod 404, a translation seat 405, a first support rod 406, an adjustment rod 407, a limit block 408 and a second support rod 409. The front of the upper arm support plate 1 is fixedly connected with the adjustment plate 401. The inside of the adjustment plate 401 is rotatably connected with the worm 402. By rotating the rotating wheel to rotate the worm 402, the two threaded lead screws 403 are rotated synchronously. The inside of the adjustment plate 401 is rotatably connected with the threaded lead screw 403. The inside of the adjustment plate 401 is fixedly connected with the spring rod 404. The threaded lead screw 403 drives the translation seat 405 to slide on the spring rod 404. The outside of the threaded lead screw 403 is threadedly connected with the translation seat 405. The front of the translation seat 405 is rotatably connected with the first support rod 406. The first support rod 406 pushes the upper arm support plate 1 to adjust the angle. The back of the lower arm support plate 3 is fixedly connected with the adjustment rod 407. The outside of the adjustment rod 407 is slidably connected with the limit block 408. The top of the limit block 408 is hinged with the second support rod 409. The second support rod 409 pushes the limit block 408 to slide outside the adjustment rod 407.

[0023] During implementation, the operations are carried out in the following steps:

[0024] 1) First, take out the positioning pin rod in the limit block 408, rotate the rotating wheel to drive the worm 402, so that the worm 402 meshes with the worm wheel shaft structure of the threaded lead screw 403;

[0025] 2) Then the two threaded lead screws 403 rotate synchronously to make the translation seat 405 slide left and right on the lead screw 4041, and use the buffer spring 4042 to decelerate the translation seat 405;

[0026] 3) Then drive the first support rod 406 to swing obliquely through the translation seat 405, so that the first support rod 406 pushes the upper arm support plate 1 to adjust the angle;

[0027] 4) Finally, the upper arm support plate 1 drives the second support rod 409 to swing, so that the limit block 408 slides outside the adjustment rod 407. After adjusting the angle, use the positioning pin rod to limit and fix the limit block 408 and the adjustment rod 407 again.

[0028] According to Figure 2 and Figure 4 As shown, rotate the rotating wheel, use the rotating wheel to drive the worm 402 to rotate. The worm 402 meshes with the worm wheel shaft structures outside the two threaded lead screws 403. The two threaded lead screws 403 are synchronously driven by the transmission worm wheel shaft. The two threaded lead screws 403 drive the translation seat 405 to move left and right through the threaded sleeve block.

[0029] According to Figure 4As shown in the figure, the spring rod 404 includes a lead screw 4041 and a buffer spring 4042. The translation seat 405 slides outside the lead screw 4041 through a round hole. At the same time, the left and right sides of the translation seat 405 are connected to the opposite sides of the two buffer springs 4042, and the elastic coefficient of the buffer spring 4042 is small. The translation seat 405 is moved to squeeze the buffer spring 4042 to cause elastic deformation, thereby decelerating the movement of the translation seat 405 and preventing excessive angle adjustment.

[0030] According to Figure 1 and Figure 3 as well as Figure 4 As shown in the figure, when the translation seat 405 moves, it will push the upper arm support plate 1 through the first support rod 406 to swing at an angle adapting to the elbow joint. At this time, the upper arm support plate 1 will push the limit block 408 to slide outside the adjusting rod 407 through the second support rod 409. When adjusted to the appropriate angle, the positioning pin rod is respectively inserted into the limit hole of the limit block 408 and the threaded hole of the adjusting rod 407 to limit and fix the limit block 408 and the adjusting rod 407, so as to fix the angles of the upper arm support plate 1 and the lower arm support plate 3.

[0031] In summary, for the elbow joint limiting device with adjustable bending angle, by rotating the worm wheel to drive the worm 402, using the worm gear shaft structure of the worm 402 meshing to drive the threaded lead screw 403, the threaded lead screw 403 drives the translation seat 405 to slide left and right on the lead screw 4041. At the same time, the buffer spring 4042 outside the lead screw 4041 can decelerate the translation seat 405. The first support rod 406 pushes the upper arm support plate 1 to adjust the angle. At this time, the limit block 408 and the second support rod 409 will slide on the adjusting rod 407 synchronously. When adjusted to the appropriate angle, the positioning pin rod is inserted into the positioning hole and the threaded hole to fix and limit the adjusting rod 407 and the limit block 408, thereby realizing the angle fixation of the upper arm support plate 1 and the lower arm support plate 3, and solving the problem that the elbow joint angle adjustable positioning bracket in the above background technology is prone to change the angle of the elbow joint bracket again because the stop disk cannot limit the stop block.

[0032] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0033] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An elbow joint limit device with adjustable bending angle, comprising an upper arm support plate (1), characterized in that: The bottom of the upper arm support plate (1) is fixedly connected to a sponge pad (2), the left side of the sponge pad (2) is fixedly connected to a lower arm support plate (3), and a limit adjustment structure (4) is provided on the outer side of the lower arm support plate (3); The position limiting adjustment structure (4) comprises an adjustment plate (401), a worm (402), a threaded screw (403), a spring rod (404), a translation seat (405), a first support rod (406), an adjustment rod (407), a position limiting block (408) and a second support rod (409); the front side of the upper arm support plate (1) is fixedly connected to the adjustment plate (401); the interior of the adjustment plate (401) is rotatably connected to the worm (402); the interior of the adjustment plate (401) is rotatably connected to the threaded screw The adjusting plate (401) is internally fixedly connected with a spring rod (404), the threaded screw rod (403) is externally threadedly connected with a translation seat (405), the front of the translation seat (405) is rotatably connected with a first support rod (406), the back of the lower arm support plate (3) is fixedly connected with an adjusting rod (407), the outside of the adjusting rod (407) is slidably connected with a limit block (408), and the top of the limit block (408) is hinged with a second support rod (409).

2. The elbow joint limiting device with adjustable bending angle according to claim 1, characterized in that: The left side of the top of the adjustment plate (401) is rotatably connected to a rotating wheel, the bottom of the rotating wheel is fixedly connected to the top of the worm (402), the number of the threaded screws (403) is two, the outer sides of the left ends of the two threaded screws (403) are coaxially fixed with worm gear shaft structures, and the two worm gear shafts are meshed with the outer sides of the worm (402).

3. The elbow joint limiting device with adjustable bending angle according to claim 1, characterized in that: The external threads of the two threaded screw rods (403) are connected with threaded sleeves, and the two threaded sleeves are respectively connected to the top and bottom of the translation seat (405). The translation seat (405) has a circular hole structure that passes horizontally from left to right.

4. The elbow joint limiting device with adjustable bending angle according to claim 3, characterized in that: The spring rod (404) comprises a lead screw (4041) fixedly connected to the inside of the adjustment plate (401), and buffer springs (4042) are sleeved on the outer sides of the left and right ends of the lead screw (4041), and the translation seat (405) is slidably connected to the lead screw (4041) through a circular hole, and the opposite ends of the two buffer springs (4042) are fixedly connected on the left and right sides of the translation seat (405).

5. The elbow joint limiting device with adjustable bending angle according to claim 1, characterized in that: The top of the first support rod (406) is rotatably connected to the front side of the upper arm support plate (1), a number of threaded holes are provided inside the adjustment rod (407), a limiting hole corresponding to the threaded hole is provided on the back side of the limiting block (408), and a positioning pin rod is connected to the internal thread of the limiting hole.

6. The elbow joint limiting device with adjustable bending angle according to claim 1, characterized in that: The top of the second support rod (409) is rotatably connected to the back of the upper arm support plate (1), and a number of elastic bands (5) are fixedly connected to the left side of the upper arm support plate (1) and the top of the lower arm support plate (3).

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