Supine knee joint flexion and extension training device

Abstract

The utility model discloses a supine knee joint flexion and extension training device which comprises a base, a first sleeve rod, a first telescopic arm, a second sleeve rod, a second telescopic arm, a thigh supporting plate, a shank supporting plate, a sliding support, a pedal plate and a driving mechanism. The rear ends of the second sleeve rods are rotationally connected with the front ends of the first telescopic arms, the lower end of the sliding support is in transmission connection with the driving mechanism, the thigh supporting plate is arranged between the first sleeve rods on the two sides, the shank supporting plate is arranged between the second sleeve rods on the two sides, and the pedal is arranged at the upper end of the sliding support. The driving mechanism drives the first sleeve rod, the first telescopic arm, the second sleeve rod and the second telescopic arm to swing in a reciprocating mode and drives the sliding support to slide back and forth in a reciprocating mode, then flexion and extension training of the knee joint is achieved, the whole driving mechanism is arranged in the base, and on the premise that transmission efficiency is guaranteed, a transmission structure is simplified.

Description

Technical Field

[0001] This utility model relates to the field of rehabilitation training equipment technology, and in particular to a supine knee flexion and extension training device. Background Technology

[0002] Knee joint mobility impairment, joint stiffness, and joint contracture are common postoperative sequelae, mainly manifested as lower limb stiffness, inability to straighten the leg, and inability to squat. In order to get rid of this problem as soon as possible, patients usually use specialized rehabilitation training equipment to perform rehabilitation training on the knee joint.

[0003] In existing technologies, such as the supine knee joint rehabilitation training device disclosed in the applicant's previous patent application CN221617768U, the flexion and extension movements rely on the rotation of gears driven by a rack and pinion, which in turn drives the thigh and lower leg supports to swing, and causes the support rod and slider to move on the slide rail, thereby achieving flexion and extension training. However, the transmission structure of the gear and rack, and the slider and slide rail is somewhat complex, with low transmission efficiency, and the above structures all protrude from the surface of the base, making the overall structure of the training device less concise and aesthetically pleasing.

[0004] Therefore, the applicant has made improvements based on existing patented technologies to solve the aforementioned problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model discloses a supine knee flexion and extension training device, including a base, a first sleeve rod, a first telescopic arm, a second sleeve rod, a second telescopic arm, a thigh support plate, a calf support plate, a sliding bracket, a foot pedal, and a drive mechanism. The rear end of the first sleeve rod is rotatably connected to the rear side of the base. The first telescopic arm is slidably disposed inside the first sleeve rod. The rear end of the second sleeve rod is rotatably connected to the front end of the first telescopic arm. The second telescopic arm is slidably disposed inside the second sleeve rod. The upper end of the sliding bracket is rotatably connected to the front end of the second sleeve rod. The lower end of the sliding bracket is drively connected to the drive mechanism disposed inside the base. The thigh support plate is disposed between the first sleeve rods on both sides. The calf support plate is disposed between the second sleeve rods on both sides. The foot pedal is disposed at the upper end of the sliding bracket.

[0006] Furthermore, the driving mechanism includes a motor, a screw, a slide block, a slider, and a connecting seat. The motor is located at the bottom of the base, the slide block is located on one side of the motor along its length, the screw is located above the slide block and one end is connected to the motor for transmission, the slider is slidably mounted on the slide block and is connected to the screw in a threaded manner, the connecting seat is located above the slider, and the lower end of the sliding bracket is fixedly connected to the protrusions on both sides of the top of the connecting seat through a connecting rod and screws.

[0007] Furthermore, the upper surface of the base is provided with two parallel sliding grooves along its length, and the protrusions on both sides extend out of the two sliding grooves respectively.

[0008] Furthermore, a telescopic frame is provided on the rear side of the base, and the two sides of the telescopic frame are slidably connected to the inner wall of the base. Damping blocks are provided on both sides of the base near the telescopic frame.

[0009] Furthermore, the first telescopic arm is provided with a plurality of first limiting holes at intervals, and the first sleeve is provided with a first knob. The threaded part at the front end of the first knob passes through the first sleeve and the first limiting holes to lock and position them.

[0010] Furthermore, the second telescopic arm is provided with a plurality of second limiting holes at intervals, and the second sleeve is provided with a second knob. The threaded part at the front end of the second knob passes through the second sleeve and the second limiting holes to lock and position them.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model uses a drive mechanism to drive the first sleeve rod, the first telescopic arm, the second sleeve rod, and the second telescopic arm to swing back and forth, and further drive the sliding bracket to slide back and forth, thereby realizing knee joint flexion and extension training. The entire drive mechanism is set inside the base, which simplifies the transmission structure while ensuring transmission efficiency. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the base in this utility model;

[0016] Figure 3 for Figure 1 Enlarged view of the local structure at point A in the middle.

[0017] Figure label:

[0018] 1-Base, 11-Slide groove, 2-First sleeve rod, 21-First knob, 3-First telescopic arm, 31-First limiting hole, 4-Second sleeve rod, 41-Second knob, 5-Second telescopic arm, 51-Second limiting hole, 6-Thigh support plate, 7-Lower leg support plate, 8-Sliding bracket, 9-Foot pedal, 12-Motor, 13-Screw, 14-Slide seat, 15-Slider, 16-Connecting seat, 17-Connecting rod, 18-Screw, 19-Protrusion, 20-Telescopic frame, 21-Damping block. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0021] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0022] In the description of the embodiments, unless otherwise expressly specified and limited, the terms "set," "connect," etc., should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or a connection through an intermediate medium, or it can be a connection within 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.

[0023] like Figure 1As shown, the supine knee flexion and extension training device in this embodiment includes a base 1, a first sleeve rod 2, a first telescopic arm 3, a second sleeve rod 4, a second telescopic arm 5, a thigh support plate 6, a calf support plate 7, a sliding bracket 8, a foot pedal 9, and a drive mechanism. The rear end of the first sleeve rod 2 is rotatably connected to the rear side of the base 1. The first telescopic arm 3 is slidably disposed inside the first sleeve rod 2. The rear end of the second sleeve rod 4 is rotatably connected to the front end of the first telescopic arm 3. The second telescopic arm 5 is slidably disposed inside the second sleeve rod 4. The upper end of the sliding bracket 8 is rotatably connected to the front end of the second sleeve rod 4. The lower end of the sliding bracket 8 is drively connected to the drive mechanism disposed inside the base 1. The thigh support plate 6 is disposed between the first sleeve rods 2 on both sides. The calf support plate 7 is disposed between the second sleeve rods 4 on both sides. The foot pedal 9 is disposed on the upper end of the sliding bracket 8.

[0024] The first telescopic arm 3 is provided with a plurality of first limiting holes 31 spaced apart, and the first sleeve 2 is provided with a first knob 21. The threaded part at the front end of the first knob 21 passes through the first sleeve 2 and the first limiting holes 31 to lock and position the two.

[0025] The second telescopic arm 5 is provided with a plurality of second limiting holes 51 spaced apart, and the second sleeve 4 is provided with a second knob 41. The threaded part at the front end of the second knob 41 passes through the second sleeve 4 and the second limiting holes 51 to lock and position them.

[0026] The upper surface of the base 1 has two parallel grooves 11 along its length.

[0027] like Figure 2 As shown, the drive mechanism includes a motor 12, a screw 13, a slide 14, a slider 15, and a connecting seat 16. The motor 12 is located at the bottom of the base 1. The slide 14 is located along its length on one side of the motor 12. The screw 13 is located above the slide 14 and one end is connected to the motor 12 for transmission. The slider 15 is slidably mounted on the slide 14 and is connected to the screw 13 by a threaded connection. The connecting seat 16 is located above the slider 15. Figure 3 As shown, the lower end of the sliding bracket 8 is fixedly connected to the protrusions 19 on both sides of the top of the connecting seat 16 via the connecting rod 17 and screw 18. The protrusions 19 on both sides extend out of the two sliding grooves 11 respectively.

[0028] A telescopic frame 20 is provided on the rear side of the base 1. The two sides of the telescopic frame 20 are slidably connected to the inner wall of the base 1. Damping blocks 21 are provided on both sides of the base 1 near the telescopic frame 20. The damping blocks 21 slide and rub against the telescopic frame 20, so that the telescopic frame 20 has a certain resistance when it extends and retracts, preventing it from moving freely.

[0029] In use, the motor 12 drives the screw 13 to rotate, and the rotational motion of the screw 13 is converted into the linear motion of the slider 15, which in turn drives the connecting seat 16 to slide back and forth along the direction of the slide groove 11. During the sliding process of the connecting seat 16, the sliding bracket 8 is driven to slide back and forth along the slide groove 11, causing the first sleeve rod 2, the first telescopic arm 3, the second sleeve rod 4 and the second telescopic arm 5 to swing back and forth, thereby realizing the flexion and extension training of the knee joint.

[0030] The drive mechanism of this utility model is set inside the base 1. The surface of the base 1 is simple and beautiful. While ensuring transmission efficiency, the transmission structure is simplified and the utility model is highly practical.

[0031] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

Claims

1. A supine knee flexion and extension training device, characterized in that: The device includes a base, a first sleeve rod, a first telescopic arm, a second sleeve rod, a second telescopic arm, a thigh support plate, a calf support plate, a sliding bracket, a foot pedal, and a drive mechanism. The rear end of the first sleeve rod is rotatably connected to the rear side of the base. The first telescopic arm is slidably disposed inside the first sleeve rod. The rear end of the second sleeve rod is rotatably connected to the front end of the first telescopic arm. The second telescopic arm is slidably disposed inside the second sleeve rod. The upper end of the sliding bracket is rotatably connected to the front end of the second sleeve rod. The lower end of the sliding bracket is drively connected to the drive mechanism disposed inside the base. The thigh support plate is disposed between the first sleeve rods on both sides. The calf support plate is disposed between the second sleeve rods on both sides. The foot pedal is disposed at the upper end of the sliding bracket.

2. The supine knee flexion and extension training device according to claim 1, characterized in that: The driving mechanism includes a motor, a screw, a slide block, a slider, and a connecting seat. The motor is located at the bottom of the base. The slide block is located on one side of the motor along its length. The screw is located above the slide block and one end is connected to the motor for transmission. The slider is slidably mounted on the slide block and is connected to the screw in a threaded manner for transmission. The connecting seat is located above the slider. The lower end of the sliding bracket is fixedly connected to the protrusions on both sides of the top of the connecting seat through a connecting rod and screws.

3. The supine knee flexion and extension training device according to claim 2, characterized in that: The upper surface of the base has two parallel grooves along its length, and the protrusions on both sides extend out of the two grooves respectively.

4. The supine knee flexion and extension training device according to claim 1, characterized in that: The base is provided with a telescopic frame on the rear side, and the two sides of the telescopic frame are slidably connected to the inner wall of the base. Damping blocks are provided on both sides of the base near the telescopic frame.

5. The supine knee flexion and extension training device according to claim 1, characterized in that: The first telescopic arm is provided with a plurality of first limiting holes at intervals, and the first sleeve is provided with a first knob. The threaded part at the front end of the first knob passes through the first sleeve and the first limiting holes to lock and position them.

6. The supine knee flexion and extension training device according to claim 1, characterized in that: The second telescopic arm is provided with a plurality of second limiting holes at intervals, and the second sleeve is provided with a second knob. The threaded part at the front end of the second knob passes through the second sleeve and the second limiting holes to lock and position them.

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