Joint motion range measurer

Abstract

The utility model relates to a joint motion range measurer which comprises a mounting frame and a measuring disc, the mounting frame is vertically fixed on a wall surface, a driving mechanism is arranged on the front side of the mounting frame, the measuring disc is mounted on the front side of the mounting frame through the driving mechanism, and the driving mechanism is used for driving the measuring disc to perform lifting adjustment. A shaft rod is rotatably installed at the center of the front side surface of the measuring disc, a swing measuring arm is fixed at the end of the shaft rod, a grip for a measurer to hold is arranged at the tail end of the swing measuring arm, and the front side surface of the measuring disc is provided with a datum line which passes through the center of the measuring disc and vertically extends. According to the utility model, the mounting rack is fixed on the wall surface, and the other parts are sequentially mounted on the front side of the mounting rack, so that the whole structure is more stable, and the situation of side inclination caused by improper operation or excessive force application of a measurer during measurement is avoided, thereby ensuring the stability of the measurement process and improving the measurement accuracy. And the accuracy of a measurement result is improved to a certain extent.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary device technology, and in particular to a joint range of motion measuring device. Background Technology

[0002] Joint range of motion refers to the arc of motion or the angle of rotation that a joint can move. Measuring the range of motion is a basic step in assessing patients with muscular, skeletal, and nerve damage. It is one of the indicators for assessing the extent and degree of joint movement function impairment. By measuring a patient's joint range of motion, the degree of limitation in joint movement can be determined.

[0003] Referring to Chinese Patent No. CN215305887U, which discloses a shoulder joint range of motion measuring device, the angle measurement value provided by the measuring device is not obstructed during the measurement, which effectively improves the accuracy of the measurement value reading.

[0004] However, the measuring device is arranged vertically. Even if the bottom roller has a braking effect, its overall center of gravity is high and its stability is insufficient. If it is not operated properly or excessive force is applied, it is easy to tilt or fall over, resulting in insufficient measurement stability. Utility Model Content

[0005] The purpose of this invention is to provide a highly stable joint range of motion measuring device, which effectively solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution.

[0007] A joint range of motion measuring device includes a mounting frame and a measuring disk. The mounting frame is vertically fixed to a wall. A drive mechanism is provided on the front side of the mounting frame. The measuring disk is mounted on the front side of the mounting frame through the drive mechanism. The drive mechanism is used to drive the measuring disk to adjust its height. A shaft is rotatably mounted at the center of the front surface of the measuring disk. A swing measuring arm is fixed at the end of the shaft. The end of the swing measuring arm is provided with a handle for the measurer to hold. The front surface of the measuring disk has a reference line that passes through its center and extends vertically. Angle scale lines are symmetrically arranged on both sides of the reference line on the front surface of the measuring disk.

[0008] Therefore, by fixing the mounting bracket to the wall and then installing the remaining components in sequence on the front side of the mounting bracket, the overall structure becomes more stable. During measurement, it will not tilt or lean due to improper operation or excessive force by the measurer, thus ensuring the stability of the measurement process and improving the accuracy of the measurement results to a certain extent.

[0009] Furthermore, the drive mechanism includes a pair of mounting plates, a threaded rod, a guide rod, a nut seat, and a rocker plate. The two mounting plates are respectively fixed at the upper and lower ends of the front surface of the mounting frame. The threaded rod is vertically rotatably mounted between the two mounting plates, and its bottom end extends through to the bottom of the bottom mounting plate. The guide rod is vertically fixed between the two mounting plates. The nut seat is slidably fitted on the guide rod and threadedly fitted on the threaded rod. The measuring disc is fixed on the front end face of the nut seat, and the rocker plate is mounted on the bottom end of the threaded rod.

[0010] Furthermore, the swing measuring arm consists of a connecting arm and an adjusting rod. The connecting arm is fixed on the shaft. The end face of the connecting arm is provided with a guide hole extending along its length. The adjusting rod is slidably inserted into the guide hole, and one end extends to the outside of the connecting arm. The handle is installed on the end of the adjusting rod located outside the connecting arm. The outer surface of the connecting arm is provided with a limiting groove extending along its length and communicating with the guide hole. An anti-disengagement rod is slidably installed in the limiting groove. The anti-disengagement rod extends into the guide hole and is fixedly connected to the outer wall of the adjusting rod.

[0011] Furthermore, a bracket is fixed on the outer surface of the connecting arm, and a miniature electric push cylinder is fixed on the bracket. An arc-shaped clamping plate that matches the curvature of the outer edge of the measuring disk is fixed on the end of the telescopic rod of the miniature electric push cylinder. The arc-shaped clamping plate abuts and presses against the outer edge wall of the measuring disk. An electrical control box is installed on the top of the upper mounting plate, and a control button is installed at the end of the handle. Both the miniature electric push cylinder and the control button are electrically connected to the controller in the electrical control box.

[0012] Furthermore, the inner surface of the arc-shaped clamping plate is evenly covered with anti-slip ridges, and a ring of rubber pads is fixed on the outer edge of the measuring disc.

[0013] Furthermore, mounting feet are fixed on both sides of the mounting bracket, and each mounting foot is provided with mounting holes.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows.

[0015] 1. This utility model makes the overall structure more stable by fixing the mounting bracket to the wall and then installing the remaining components in sequence on the front side of the mounting bracket. During measurement, it will not tilt or lean due to improper operation or excessive force by the measurer, thus ensuring the stability of the measurement process and improving the accuracy of the measurement results to a certain extent.

[0016] 2. In this invention, after the arm rotates to its maximum height, the user presses a control button, which sends a working signal to the controller in the control box. The controller then controls the extension of the miniature electric push cylinder, which pushes the arc-shaped pressing plate against the outer edge of the measuring disc to achieve a locking effect. This prevents the swinging measuring arm from swinging downwards due to gravity after the user releases the handle, thus affecting the measurement results. Furthermore, this locking method is an automatic control via a push-button mechanism, making operation easier and less strenuous. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a partial structural diagram of the mounting bracket in this utility model;

[0019] Figure 3 This is a schematic diagram of a partial structure of the measuring disk surface in this utility model;

[0020] Figure 4 This is a schematic diagram of a partial structure of the bracket in this utility model.

[0021] In the diagram: 1. Mounting bracket; 11. Mounting foot; 12. Mounting hole; 2. Drive mechanism; 21. Mounting plate; 22. Threaded rod; 23. Guide rod; 24. Nut seat; 25. Shaking plate; 3. Measuring disc; 301. Rubber pad; 31. Baseline; 32. Angle scale line; 4. Shaft; 5. Swinging measuring arm; 51. Connecting arm; 52. Guide hole; 53. Adjusting rod; 54. Limiting groove; 55. Anti-detachment rod; 6. Handle; 7. Bracket; 8. Miniature electric push cylinder; 81. Control button; 82. Arc-shaped clamping plate; 821. Anti-slip ridge; 9. Electrical control box. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4The present invention provides a joint range of motion measuring device, including a mounting frame 1 and a measuring disk 3. The mounting frame 1 is vertically fixed to the wall. A drive mechanism 2 is provided on the front side of the mounting frame 1. The measuring disk 3 is mounted on the front side of the mounting frame 1 through the drive mechanism 2. The drive mechanism 2 is used to drive the measuring disk 3 to adjust its height. A shaft 4 is rotatably mounted at the center of the front surface of the measuring disk 3. A swing measuring arm 5 is fixed at the end of the shaft 4. A handle 6 for the measurer to hold is provided at the end of the swing measuring arm 5. The front surface of the measuring disk 3 has a reference line 31 that passes through its center and extends vertically. Angle scale lines 32 are symmetrically arranged on both sides of the reference line 31 on the front surface of the measuring disk 3.

[0024] This joint range of motion measurement method fixes the mounting bracket 1 to the wall and then installs the remaining components in sequence on the front side of the mounting bracket 1, making the overall structure more stable. During measurement, it will not tilt or lean due to improper operation or excessive force by the measurer, thus ensuring the stability of the measurement process and improving the accuracy of the measurement results to a certain extent.

[0025] During the measurement, the person taking the measurement stands upright, ensuring that they are parallel to the baseline 31. They then grasp the handle 6 and raise it to its maximum limit, which causes the swing measuring arm 5 to rotate synchronously around the axis of the shaft 4. The final position of the swing measuring arm 5 is the maximum position of the patient's shoulder joint. By comparing the position indicated by the swing measuring arm 5 with the angular scale line 32, the maximum range of motion of the shoulder joint can be obtained. Furthermore, through the operation of the drive mechanism 2, the measuring disc 3 can be adjusted in height to accommodate users of different heights.

[0026] Specifically, the drive mechanism 2 includes a pair of mounting plates 21, a threaded rod 22, a guide rod 23, a nut seat 24, and a rocker plate 25. The two mounting plates 21 are respectively fixed at the upper and lower ends of the front surface of the mounting frame 1. The threaded rod 22 is vertically rotatably mounted between the two mounting plates 21, and its bottom end extends through to the bottom of the bottom mounting plate 21. The guide rod 23 is vertically fixed between the two mounting plates 21. The nut seat 24 is slidably fitted on the guide rod 23 and threadedly fitted on the threaded rod 22. The measuring disc 3 is fixed on the front end face of the nut seat 24. The rocker plate 25 is mounted on the bottom end of the threaded rod 22. By rocking the rocker plate 25, the threaded rod 22 is driven to rotate. The rotating threaded rod 22 drives the nut seat 24 to slide up and down along the guide rod 23, thereby driving the measuring disc 3 to rise and fall synchronously, providing drive for the height adjustment of the measuring disc 3.

[0027] In addition, the transmission method of using the threaded rod 22 to drive the nut seat 24 to rise and fall has a self-locking effect. When the rocker 25 is not rocking, the nut seat 24 and the measuring disk 3 can be prevented from rising and falling arbitrarily, which helps to maintain the height of the measuring disk 3.

[0028] Specifically, the swing measuring arm 5 consists of a connecting arm 51 and an adjusting rod 53. The connecting arm 51 is fixed on the shaft 4. The end face of the connecting arm 51 is provided with a guide hole 52 extending along its length direction. The adjusting rod 53 is slidably inserted into the guide hole 52, and one end extends to the outside of the connecting arm 51. The handle 6 is installed on the end of the adjusting rod 53 located outside the connecting arm 51. Through the sliding extension and retraction adjustment capability of the adjusting rod 53, the total length of the swing measuring arm 5 can be adjusted to meet the needs of measuring users with different arm lengths.

[0029] In addition, a limiting groove 54 extending along its length and communicating with the guide hole 52 is provided on the outer surface of the connecting arm 51. An anti-detachment rod 55 is slidably installed in the limiting groove 54. The anti-detachment rod 55 extends into the guide hole 52 and is fixedly connected to the outer wall of the adjusting rod 53. When the adjusting rod 53 slides and extends, it can drive the anti-detachment rod 55 to slide along the limiting groove 54. The sliding cooperation between the limiting groove 54 and the anti-detachment rod 55 can limit the adjusting rod 53, thereby preventing the adjusting rod 53 from sliding excessively and detaching from the guide hole 52.

[0030] Specifically, a bracket 7 is fixed to the outer surface of the connecting arm 51, and a miniature electric push cylinder 8 is fixed to the bracket 7. An arc-shaped clamping plate 82, which is adapted to the curvature of the outer edge of the measuring disk 3, is fixed to the end of the telescopic rod of the miniature electric push cylinder 8. The arc-shaped clamping plate 82 abuts and presses against the outer edge wall of the measuring disk 3. An electrical control box 9 is installed on the top of the upper mounting plate 21, and a control button 81 is installed at the end of the handle 6. The miniature electric push cylinder 8 and the control button 81 are both electrically connected to the controller in the electrical control box 9. After rotating to the maximum height, the measurer presses the control button 81, which sends a working signal to the controller in the control box 9. The controller then controls the extension of the micro electric push cylinder 8, which pushes the arc-shaped pressing plate 82 to press against the outer edge of the measuring disc 3, thus locking it in place. This prevents the measuring arm 5 from swinging downwards due to gravity after the measurer releases the handle 6, which would affect the measurement results. In addition, this locking method is an automatic control by pressing a button, making the operation easier and less strenuous.

[0031] Secondly, by pressing the control button 81 again, the miniature electric push cylinder 8 can be retracted, which in turn can drive the arc-shaped clamping plate 82 to separate from the outer edge of the measuring disk 3 so that the measurement work can be repeated.

[0032] Specifically, the inner edge surface of the arc-shaped pressing plate 82 is evenly distributed with anti-slip ridges 821, and a ring of rubber pads 301 is fixed on the outer edge wall of the measuring disc 3. After the arc-shaped pressing plate 82 is pressed against the outer edge wall of the measuring disc 3, the anti-slip ridges 821 are pressed against the rubber pads 301, increasing the friction and improving the locking effect.

[0033] Specifically, mounting feet 11 are fixed on both sides of the mounting bracket 1. Each mounting foot 11 is provided with a mounting hole 12. By passing an expansion screw through the mounting hole 12 and inserting it into the wall, the mounting foot 11 can be fixed to the wall, thereby achieving the fixed installation of the mounting bracket 1.

[0034] The above is a detailed description of the present invention in conjunction with specific embodiments, and it should not be construed that the specific embodiments of the present invention are limited to these descriptions. For those skilled in the art, any equivalent substitutions or obvious modifications made without departing from the concept of the present invention, and which have the same performance or use, should be considered as falling within the patent protection scope defined by the submitted claims.

Claims

1. A joint range of motion measuring device, characterized in that: Includes a mounting bracket (1) and a measuring disk (3); The mounting bracket (1) is vertically fixed to the wall. A drive mechanism (2) is provided on the front side of the mounting bracket (1). The measuring disc (3) is installed on the front side of the mounting bracket (1) through the drive mechanism (2). The drive mechanism (2) is used to drive the measuring disc (3) to adjust its height. A shaft (4) is rotatably mounted at the center of the front surface of the measuring disk (3). A swing measuring arm (5) is fixed at the end of the shaft (4). A handle (6) for the measurer to hold is provided at the end of the swing measuring arm (5). The front surface of the measuring disk (3) has a reference line (31) that passes through its center and extends vertically, and angular scale lines (32) are symmetrically arranged on both sides of the reference line (31) on the front surface of the measuring disk (3).

2. The joint range of motion measuring device according to claim 1, characterized in that: The drive mechanism (2) includes a pair of mounting plates (21), a threaded rod (22), a guide rod (23), a nut seat (24), and a rocker plate (25); The two mounting plates (21) are respectively fixed at the upper and lower ends of the front surface of the mounting bracket (1), and the threaded rod (22) is vertically rotatably installed between the two mounting plates (21), with its bottom end extending through to the bottom of the mounting plate (21); The guide rod (23) is vertically fixed between the two mounting plates (21); The nut seat (24) is slidably mounted on the guide rod (23) and threadedly mounted on the threaded rod (22). The measuring disk (3) is fixed on the front end face of the nut seat (24). The rocker plate (25) is mounted on the bottom end of the threaded rod (22).

3. A joint range of motion measuring device according to claim 2, characterized in that: The swing measuring arm (5) consists of a connecting arm (51) and an adjusting rod (53); The connecting arm (51) is fixed on the shaft (4). The end face of the connecting arm (51) is provided with a guide hole (52) extending along its length direction. The adjusting rod (53) is slidably inserted into the guide hole (52) and one end extends to the outside of the connecting arm (51). The grip (6) is mounted on the end of the adjusting rod (53) located outside the connecting arm (51); The outer surface of the connecting arm (51) is provided with a limiting groove (54) that extends along its length and communicates with the guide hole (52), and an anti-detachment rod (55) is slidably installed in the limiting groove (54). The anti-detachment rod (55) extends into the guide hole (52) and is fixedly connected to the outer wall of the adjusting rod (53).

4. A joint range of motion measuring device according to claim 3, characterized in that: A bracket (7) is fixed on the outer surface of the connecting arm (51), a miniature electric push cylinder (8) is fixed on the bracket (7), and an arc-shaped clamping plate (82) that is adapted to the curvature of the outer edge of the measuring disk (3) is fixed on the end of the telescopic rod of the miniature electric push cylinder (8). The arc-shaped pressing plate (82) is in contact with and pressed against the outer edge wall of the measuring disk (3); An electric control box (9) is installed on the top of the mounting plate (21) above, and a control button (81) is installed at the end of the handle (6). The micro electric push cylinder (8) and the control button (81) are both electrically connected to the controller inside the electric control box (9).

5. A joint range of motion measuring device according to claim 4, characterized in that: The inner edge surface of the arc-shaped pressing plate (82) is evenly distributed with anti-slip ridges (821), and a ring of rubber pads (301) is fixed on the outer edge wall of the measuring disc (3).

6. A joint range of motion measuring device according to claim 1, characterized in that: The mounting bracket (1) has mounting feet (11) fixed on both sides, and each mounting foot (11) has a mounting hole (12).

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