Dynamic traction adjusting mechanism of back tractor

Abstract

The utility model relates to the technical field of medical instruments, in particular to a dynamic traction adjusting mechanism of a back tractor, which comprises a base and an elastic plate, one end of the elastic plate is fixedly connected with the upper surface of the base, and the other end of the elastic plate is fixedly provided with a mounting rod; first mounting rings are symmetrically and fixedly mounted on the rotating rod, second mounting rings are fixedly sleeved with the I-shaped wheels, a traction steel rope is arranged between each first mounting ring and the corresponding second mounting ring in position, and the two ends of each traction steel rope are fixedly connected with the outer ring walls of the corresponding first mounting ring and the corresponding second mounting ring correspondingly; a driving motor is fixedly installed on the surface of the base, and an output shaft of the driving motor is fixedly connected with the rotating rod. And through cooperation of the driving motor and the traction steel rope, one end of the elastic plate can be controlled to move, the radian of the elastic plate can be adjusted according to the condition of a user, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a dynamic traction adjustment mechanism for a back traction device. Background Technology

[0002] The incidence of back diseases such as lumbar disc herniation and lumbar muscle strain is increasing. Back traction devices are a common tool for treating and relieving back discomfort. They are generally composed of a base and an arc-shaped reclining board. When the user lies on the arc-shaped reclining board of the back traction device, it can closely fit various parts of the spine and apply appropriate traction force to the spine and back muscles, so that the traction force is evenly distributed on the back.

[0003] The existing curved reclining board has fixed connections at both ends to the base, which means that the curvature of the curved reclining board cannot be adjusted. Since everyone's spinal physiological curve is different, it is difficult to accurately fit the spine of each user when the curvature is not adjustable. At the same time, during back traction therapy, different stages may require different traction angles and intensities, and the corresponding requirements for the curvature of the curved reclining board will also change. The inability to adjust the curvature of the curved reclining board will reduce the practicality of the device. Utility Model Content

[0004] The purpose of this utility model is to solve the following shortcomings in the prior art: the two ends of the existing curved reclining board are fixedly connected to the base, which makes it impossible to adjust the curvature of the curved reclining board and results in poor practicality. Therefore, a dynamic traction adjustment mechanism for a back traction device is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A dynamic traction adjustment mechanism for a back traction device includes a base and an elastic plate. One end of the elastic plate is fixedly connected to the upper surface of the base, and the other end is fixedly mounted with an mounting rod. The upper surface of the base has a horizontally L-shaped mounting groove. A rotating rod is horizontally rotatably mounted in the mounting groove. First mounting rings are symmetrically fixedly mounted on the rotating rod. Both ends of the mounting rod are rotatably sleeved with I-shaped wheels. Second mounting rings are fixedly sleeved in the I-shaped wheels. The positions of the two first mounting rings correspond to the positions of the two second mounting rings. A traction steel rope is provided between each pair of first and second mounting rings. The two ends of the traction steel rope are fixedly connected to the outer ring walls of the first and second mounting rings, respectively. A drive motor is fixedly mounted on the surface of the base. The output shaft of the drive motor passes through the mounting groove and is fixedly connected to the rotating rod.

[0007] The base has horizontally open sliding openings on both the front and rear surfaces. Both ends of the mounting rod are fixedly mounted with sliders via connecting rods. The two sliders are slidably configured in the two sliding openings via sliding components.

[0008] Preferably, the sliding component includes a rectangular block fixedly installed on the lower surface of the slider, and the bottom wall of the sliding opening is provided with a horizontal sliding groove, and the rectangular block is horizontally slidably installed in the sliding groove.

[0009] Preferably, the top wall of the sliding opening is provided with multiple mounting openings at equal intervals, and a safety component is provided in each mounting opening. The safety component is used to limit the large-scale movement of the end of the elastic plate when the traction steel rope breaks.

[0010] Preferably, the safety component includes a slide rod vertically slidably inserted into the mounting opening and a limiting block fixedly installed at the bottom end of the slide rod. The longitudinal section of the limiting block is triangular, the longitudinal section of the slider is a right trapezoid, the inclined surface of the limiting block is parallel to the inclined surface of the slider, and a circular block is fixedly installed at the top end of the slide rod. The circular block is connected to the base through a telescopic component.

[0011] Preferably, the telescopic component includes a telescopic spring sleeved on the slide rod, with both ends of the telescopic spring fixedly connected to the circular block and the base, respectively.

[0012] Preferably, straight rods are symmetrically and vertically fixedly installed on the upper surface of the base, and U-shaped rods are slidably sleeved on the two straight rods. Multiple circular blocks are located above the U-shaped rods, and U-shaped handles are fixedly installed on the upper surface of the U-shaped rods.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By coordinating the drive motor and the traction steel rope, one end of the elastic plate can be moved, allowing the curvature of the elastic plate to be adjusted according to the user's own situation, thus improving the practicality of the device.

[0015] 2. After prolonged use, the traction steel rope may be at risk of breaking. Multiple safety components can limit the movement of the end of the elastic plate connected to the traction steel rope when the traction steel rope breaks, thus preventing injury to the user lying on the elastic plate due to the large deformation of the elastic plate under its own elasticity caused by the breakage of the traction steel rope. Attached Figure Description

[0016] Figure 1 This is a frontal three-dimensional structural diagram of a dynamic traction adjustment mechanism for a back traction device proposed in this utility model.

[0017] Figure 2 This is a top-view three-dimensional structural diagram of a back traction device dynamic traction adjustment mechanism proposed in this utility model;

[0018] Figure 3This is a front structural diagram of a dynamic traction adjustment mechanism for a back traction device proposed in this utility model.

[0019] Figure 4 This is a partial three-dimensional structural diagram of the mounting rod, safety component, and U-shaped rod in the dynamic traction adjustment mechanism of the back traction device proposed in this utility model.

[0020] Figure 5 for Figure 2 Enlarged view of the structure at point B in the middle;

[0021] Figure 6 for Figure 1 Enlarged view of the structure at point A in the middle;

[0022] Figure 7 for Figure 3 Enlarged view of the structure at point C.

[0023] In the diagram: 1. Base, 2. Elastic plate, 3. Mounting rod, 4. Mounting groove, 5. Rotating rod, 6. First mounting ring, 7. I-shaped wheel, 8. Second mounting ring, 9. Traction steel rope, 10. Sliding mouth, 11. Sliding block, 12. Rectangular block, 13. Sliding groove, 14. Drive motor, 15. Sliding rod, 16. Limiting block, 17. Round block, 18. Telescopic spring, 19. Straight rod, 20. U-shaped rod. Detailed Implementation

[0024] 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.

[0025] The terms used in this utility model, such as "upper", "lower", "left", "right", "middle" and "one", are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0026] Reference Figures 1-7A dynamic traction adjustment mechanism for a back traction device includes a base 1 and an elastic plate 2. One end of the elastic plate 2 is fixedly connected to the upper surface of the base 1, and the other end is fixedly mounted with an mounting rod 3. The upper surface of the base 1 has a horizontally L-shaped mounting groove 4. A rotating rod 5 is horizontally rotatably mounted in the mounting groove 4. First mounting rings 6 are symmetrically fixedly mounted on the rotating rod 5. Both ends of the mounting rod 3 are rotatably sleeved with I-shaped wheels 7. Second mounting rings 8 are fixedly sleeved in the I-shaped wheels 7. The two first mounting rings 6 correspond to the positions of the two second mounting rings 8 respectively. A traction steel rope 9 is provided between each pair of first mounting rings 6 and second mounting rings 8. The two ends of the traction steel rope 9 are fixedly connected to the outer ring walls of the first mounting rings 6 and second mounting rings 8 respectively. A drive motor 14 is fixedly mounted on the surface of the base 1. The output shaft of the drive motor 14 passes into the mounting groove 4 and is fixedly connected to the rotating rod 5.

[0027] The base 1 has horizontally opened sliding openings 10 on both the front and rear surfaces. The two ends of the mounting rod 3 are fixedly installed with sliders 11 through connecting rods. The two sliders 11 are slidably arranged in the two sliding openings 10 through sliding components. The sliding components include rectangular blocks 12 fixedly installed on the lower surface of the sliders 11. The bottom wall of the sliding opening 10 has horizontally opened sliding grooves 13. The rectangular blocks 12 are horizontally slidably installed in the sliding grooves 13.

[0028] By starting the drive motor 14 and controlling the rotating rod 5 to rotate forward or backward, the two traction steel ropes 9 can be wound and released. When winding the two traction steel ropes 9, the mounting rod 3 will move one end of the elastic plate 2 closer to the other end, and the curvature of the elastic plate 2 will gradually increase. When releasing the two traction steel ropes 9, the mounting rod 3 will move one end of the elastic plate 2 away from the other end, and the curvature of the elastic plate 2 will gradually decrease. When the mounting rod 3 moves, the two sliders 11 will slide in the two sliding openings 10 respectively. The curvature of the elastic plate 2 can be adjusted according to the user's own situation, which improves the practicality of the device.

[0029] Multiple mounting openings are equidistantly provided on the top wall of the sliding opening 10. A safety component is provided in each mounting opening. The safety component is used to limit the large-scale movement of the end of the elastic plate 2 when the traction steel rope 9 breaks. The safety component includes a sliding rod 15 vertically slidably inserted into the mounting opening and a displacement limiting block 16 fixedly installed at the bottom of the sliding rod 15. The longitudinal section of the displacement limiting block 16 is triangular, and the longitudinal section of the slider 11 is a right trapezoid. The inclined surface of the displacement limiting block 16 is parallel to the inclined surface of the slider 11. A circular block 17 is fixedly installed at the top of the sliding rod 15. The circular block 17 is connected to the base 1 through a telescopic component. The telescopic component includes a telescopic spring 18 sleeved on the sliding rod 15. The two ends of the telescopic spring 18 are fixedly connected to the circular block 17 and the base 1, respectively.

[0030] When the two traction steel ropes 9 are wound up, and one end of the elastic plate 2 is moved closer to the other end to increase the curvature of the elastic plate 2, the slider 11 will also move within the sliding opening 10. The inclined surface of the slider 11 will slide into contact with the inclined surface of the limiting block 16. Under the pressure of the inclined surface, the limiting block 16 will move upward with the sliding rod 15. At this time, the telescopic spring 18 will be stretched. When the slider 11 moves to the point where it no longer abuts against the limiting block 16, the pressure force exerted by the slider 11 on the limiting block 16 will disappear. The limiting block 16 will then move downward quickly with the sliding rod 15 and the round block 17 under the elastic potential energy of the telescopic spring 18 to reset. If you want to control one end of the elastic plate 2 to move away from the other end, you need to control multiple sliding rods 15 and multiple limiting blocks 16 to move upward so that the multiple limiting blocks 16 are no longer located on the movement path of the slider 11.

[0031] If the traction steel cable 9 breaks, the end of the elastic plate 2 with the mounting rod 3 fixedly installed will move rapidly under its own elastic potential energy. The function of the limiting block 16 is to prevent the end of the elastic plate 2 with the mounting rod 3 fixedly installed from moving significantly. When the traction steel cable 9 breaks and the end of the elastic plate 2 with the mounting rod 3 fixedly installed moves, the two sliders 11 will also move within the two sliding openings 10. During the movement, the straight edge of the slider 11 will abut against the straight edge of the limiting block 16 closest to itself in the movement path, thereby limiting the end of the elastic plate 2 from moving significantly and preventing the user lying on the elastic plate 2 from being injured due to the large deformation of the elastic plate 2 under its own elasticity caused by the breakage of the traction steel cable 9.

[0032] A straight rod 19 is symmetrically and vertically fixedly installed on the upper surface of the base 1. A U-shaped rod 20 is slidably sleeved on the two straight rods 19. Multiple round blocks 17 are located above the U-shaped rod 20. A U-shaped handle is fixedly installed on the upper surface of the U-shaped rod 20.

[0033] By pulling the handle, the U-shaped rod 20 is moved upward, so that the upper surface of the U-shaped rod 20 abuts against the lower surface of multiple round blocks 17, and they are pushed upward together. This allows the multiple sliding rods 15 and multiple limiting blocks 16 to move upward together, which is convenient and quick.

[0034] In this invention, starting the drive motor 14 and controlling the rotating rod 5 to rotate forward or backward allows for the winding and unwinding of the two traction steel ropes 9. When winding the two traction steel ropes 9, the mounting rod 3 moves one end of the elastic plate 2 closer to the other end, gradually increasing the curvature of the elastic plate 2. When unwinding the two traction steel ropes 9, the mounting rod 3 moves one end of the elastic plate 2 away from the other end, gradually decreasing the curvature of the elastic plate 2. As the mounting rod 3 moves, the two sliders 11 slide within the two sliding openings 10, allowing the curvature of the elastic plate 2 to be adjusted according to the user's needs, thus improving the practicality of the device.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing", etc., should be interpreted broadly.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A dynamic traction adjustment mechanism for a back tractor comprising a base (1) and a resilient plate (2), characterized in that, One end of the elastic plate (2) is fixedly connected with the upper surface of the base (1), the other end is fixedly installed with the mounting rod (3), the upper surface of the base (1) is horizontally provided with the installation groove (4) with L-shaped longitudinal section, the installation groove (4) is horizontally rotatably installed with the rotating rod (5), the rotating rod (5) is symmetrically fixedly installed with the first mounting ring (6), both ends of the mounting rod (3) are rotatably sleeved with the work type wheel (7), the work type wheel (7) is fixedly sleeved with the second mounting ring (8) inside, two first mounting rings (6) are respectively corresponding to two second mounting rings (8), and the first mounting ring (6) and the second mounting ring (8) corresponding to every two positions are provided with the traction steel rope (9), both ends of the traction steel rope (9) are fixedly connected with the outer wall of the first mounting ring (6) and the second mounting ring (8), and the base (1) is fixedly installed with the driving motor (14), the output shaft of the driving motor (14) penetrates into the installation groove (4) and is fixedly connected with the rotating rod (5). The front and rear surfaces of the base (1) are horizontally provided with the sliding port (10), and both ends of the mounting rod (3) are fixedly installed with the sliding block (11) through the connecting rod. Two sliding blocks (11) are respectively slidably arranged in the two sliding ports (10) through the sliding member.

2. A dynamic traction adjustment mechanism for a back tractor as defined in claim 1, characterized in that The sliding member comprises a rectangular block (12) fixedly installed on the lower surface of the sliding block (11), and the bottom wall of the sliding port (10) is horizontally provided with a sliding groove (13), and the rectangular block (12) is horizontally slidably installed in the sliding groove (13).

3. A dynamic traction adjustment mechanism for a back tractor as defined in claim 1, wherein A plurality of installation ports are equidistantly provided on the top wall of the sliding port (10), and the installation port is provided with a safety member, and the safety member is used to limit the end of the elastic plate (2) to move greatly when the traction steel rope (9) is broken.

4. A dynamic traction adjustment mechanism for a back tractor as defined in claim 3, wherein The safety member comprises a sliding rod (15) vertically slidably inserted into the installation port and a limit block (16) fixedly installed at the bottom end of the sliding rod (15), the longitudinal section of the limit block (16) is triangular, the longitudinal section of the sliding block (11) is a right trapezoid, the inclined surface of the limit block (16) is parallel to the inclined surface of the sliding block (11), the top end of the sliding rod (15) is fixedly installed with a circular block (17), and the circular block (17) is connected with the base (1) through the telescopic member.

5. A dynamic traction adjustment mechanism for a back tractor as defined in claim 4, wherein The telescopic member comprises a telescopic spring (18) sleeved on the sliding rod (15), and both ends of the telescopic spring (18) are fixedly connected with the circular block (17) and the base (1).

6. A dynamic traction adjustment mechanism for a back tractor as defined in claim 4, wherein The upper surface of the base (1) is symmetrically and vertically fixedly installed with two straight rods (19), a U-shaped rod (20) is slidably sleeved on the two straight rods (19), a plurality of circular blocks (17) are located above the U-shaped rod (20), and a U-shaped handle is fixedly installed on the upper surface of the U-shaped rod (20).

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