A reverse walking downhill training device for knee and shoulder-neck joint rehabilitation

Abstract

The utility model relates to joint rehabilitation training equipment technical field discloses a kind of for knee and shoulder and neck joint rehabilitation training equipment of walking down hill, including rack, and rack is equipped with simulation hillside, and simulation hillside includes slope support plate, conveying belt;Rack includes movable frame and fixed support;The two sides of movable frame are respectively equipped with handrail, and handrail is fixedly connected with movable frame, and handrail is parallel with simulation hillside;It further includes rocker assembly, and the height of rocker assembly is adjustable;Rocker assembly includes rocker lever, rocker shaft, rocker fixed clamp, rocker handle;Rocker lever one end is rotatably mounted on rocker fixed clamp by rocker shaft;Rocker fixed clamp is installed on handrail;Rocker handle is installed on the other end of rocker lever.The utility model is used for knee and shoulder and neck joint rehabilitation training equipment of walking down hill, not only can satisfy the rehabilitation of old person knee joint, while also satisfy the rehabilitation demand of old person shoulder and neck joint.

Description

Technical Field

[0001] This utility model relates to the field of joint rehabilitation training equipment technology, and in particular to a backward walking downhill training device for knee and shoulder joint rehabilitation. Background Technology

[0002] Knee pain is a common leg ailment among the elderly, affecting not only daily activities but also potentially leading to loss of mobility in severe cases. In recent years, with industrial development and the accelerated pace of modern life, young people face significant work and life pressures, have less physical activity, and experience increasing car ownership, leading to less knee exercise and a growing trend of knee pain affecting younger populations.

[0003] With increasing health awareness, recent studies by medical researchers and the general public have shown that walking backwards downhill can alleviate or even cure knee pain, not only for medical professionals but also for medical professionals. However, since most cities are built and developed on flat areas, most residential areas, except for a few near mountains, lack hillside environments. Therefore, relying on natural hillsides for backward walking training is impossible for most patients. Furthermore, real hillsides are not ideally smooth surfaces but are often covered with vegetation, sand, and rocks, making them complex and prone to slipping and falling.

[0004] In the prior art, Chinese patent CN220026006U discloses "A backward walking downhill training device for knee joint rehabilitation," which includes a frame with a simulated hillside on the frame. The simulated hillside includes a slope support plate and a conveyor belt. The upper and lower layers of the conveyor belt are located above and below the slope support plate, respectively. The back of the upper layer of the conveyor belt abuts against the upper surface of the slope support plate. The slope support plate is higher at the front end and lower at the rear end. The upper layer of the conveyor belt moves from the rear end to the front end of the slope support plate along the uphill direction under the drive of the transmission roller. This patent simulates a hillside environment by setting a slope support plate with a higher front end and a lower rear end, and by using a conveyor belt arranged around the slope support plate and setting the upper layer of the belt to move from the lower end to the higher end above the slope support plate, it simulates an infinitely long downhill slope. This device creates training conditions that are basically equivalent to or even better than those on a real hillside for training students to walk backwards downhill. It can simulate an ideal hillside environment at home for patients to use for rehabilitation training. However, this device can only be used for knee joint rehabilitation and is ineffective for elderly people who need shoulder and neck joint rehabilitation. Summary of the Invention

[0005] This invention overcomes the shortcomings of the prior art and provides a backward walking downhill training device for knee and shoulder / neck joint rehabilitation, solving the above problems and increasing the rehabilitation function of the backward walking downhill training device; enabling it to not only meet the rehabilitation needs of the elderly for knee joints, but also meet the rehabilitation needs of the elderly for shoulder and neck joints.

[0006] The technical solution of this utility model is implemented as follows: A backward walking downhill training device for knee and shoulder joint rehabilitation includes a frame with a simulated hillside. The simulated hillside includes a slope support plate and a conveyor belt. The upper and lower layers of the conveyor belt are located above and below the slope support plate, respectively. The back of the upper layer of the conveyor belt rests against the upper surface of the slope support plate. The slope support plate is higher at the front and lower at the rear. Driven by a transmission roller, the upper layer of the conveyor belt moves from the rear to the front of the slope support plate in the uphill direction. The frame includes a movable frame and a fixed support. The simulated hillside is located on the movable frame, and the rear end of the movable frame rotates with the fixed support. The connection and fixing bracket are provided with multiple connection positions of different heights for connecting to the front end of the movable frame; handrails are provided on both sides of the movable frame, and the handrails are fixedly connected to the movable frame and parallel to the simulated hillside; it also includes a rocker arm assembly set on the outside of the handrail on one side, and the height of the rocker arm assembly is adjustable; the rocker arm assembly includes a rocker arm rod, a rocker arm shaft, a rocker arm fixing clamp, and a rocker arm handle; one end of the rocker arm rod is rotatably mounted on the rocker arm fixing clamp through the rocker arm shaft; the rocker arm fixing clamp is mounted on the handrail; the rocker arm handle is mounted on the other end of the rocker arm rod.

[0007] Preferably, the rocker arm fixing clamp includes two clamping ends, namely a first clamping end for fixing to the handrail and a second clamping end for fixing the rocker arm shaft. When the second clamping end is installed below the first clamping end, the rocker arm assembly is in a low position. When the second clamping end is installed above the first clamping end, the rocker arm assembly is in a high position.

[0008] Preferably, the clamping end includes two clamping parts, a clamping hole is formed between the two clamping parts, and a fastening screw is provided between the two clamping parts. When the fastening screw is tightened, the two clamping parts are clamped and fixed to the handrail or rocker arm shaft located in the clamping hole.

[0009] Preferably, a damping bearing is provided between the rocker arm and the rocker arm shaft, or a damping bearing is provided between the rocker arm shaft and the clamping part of the rocker arm fixing clamp.

[0010] Preferably, the front ends of the handrail are connected by horizontal bars; the slope support plate is installed on the movable frame, and the front end of the movable frame is connected to the fixed bracket via a pin mechanism; the front end of the fixed bracket is provided with a column, which is an upright column perpendicular to the ground, and has multiple insertion holes at different heights and positions that engage with the pins of the pin mechanism, arranged in an arc shape on the column. The use of an upright column reduces processing costs.

[0011] Preferably, a gas spring is provided between the movable frame and the fixed bracket, with one end of the gas spring connected to the movable frame and the other end connected to the fixed bracket. The gas spring provides assistance, offering support when the movable frame is pulled up or down to adjust its height, making it easier for the user to adjust.

[0012] Preferably, either the movable frame or the fixed bracket has multiple connection holes on both sides for connecting to the ends of the pneumatic strut. The farther apart the two ends of the pneumatic strut are installed, the smaller the angle between the strut and the ground; the closer the two ends of the pneumatic strut are installed, the larger the angle between the strut and the ground. Connecting the pneumatic strut to different connection holes changes the angle between the strut and the ground, thus expanding the range of the angle between the slope support plate and the ground.

[0013] Preferably, the angle between the slope support plate and the ground is between 0 and 35 degrees. The optimal angle between the slope support plate and the ground is 18 degrees.

[0014] Preferably, a front belt roller and a rear belt roller for mounting the conveyor belt are respectively provided at the front and rear ends of the movable frame corresponding to the slope support plate. The upper surface of the slope support plate is tangent to the circumferential surface of the front and rear belt rollers from the top. The front belt roller is a drive roller, and the motor for driving the drive roller is installed at the front of the movable frame. The motor output end is connected to the drive roller through a transmission mechanism. Placing the motor at the front can better protect the motor.

[0015] Preferably, an emergency stop switch is also included. One end is a magnetic connector that attaches to the controller; the other end is attached to the bottom of the foremost handrail. A contact line connects both ends, with the contact line positioned 2-5 cm above the top of the conveyor belt. When the user's shoe touches the contact line, the magnetic connector disconnects from the controller, and the controller cuts off the motor power. The emergency stop switch ensures user safety. If the user is not able to walk backwards and is carried up by the conveyor belt, kicking the contact line will pull the magnetic connector off the controller, causing the controller to immediately cut off the motor power to prevent accidental falls.

[0016] The design starting point, concept, and beneficial effects of this utility model, which adopts the above technical solution, are as follows: This invention adds arm and shoulder / neck joint exercise functions to the device by setting up a rocker arm assembly. However, the rocker arm assembly needs to be adapted to the user's height, but the height difference between different people can reach 30-40 cm. How to achieve a wide range of stepless height adjustment of the rocker arm assembly through simple fixed installation without increasing the complexity of the device structure is a challenge of this invention. This invention sets the rocker arm assembly on the handrail. Apart from the fixing clip for connecting to the handrail, no other height adjustment components or mechanisms are set. It makes full use of the height adjustment function of the front end of the movable frame, the tilt characteristics of the handrail, and the distance between the two clamping ends of the fixing clip to achieve a wide range of stepless height adjustment of the rocker arm assembly. Before using the rocker arm assembly, the user can adjust the height of the rocker arm assembly according to their own height by changing the vertical position relationship of the two clamping ends of the rocker arm fixing clip, changing the slope of the simulated hill (i.e., changing the connection height of the front end of the movable frame), and changing the front and back position of the rocker arm fixing clip on the handrail.

[0017] This utility model relates to a backward walking downhill training device for knee and shoulder / neck joint rehabilitation, which can not only meet the rehabilitation needs of the elderly for knee joints, but also meet the rehabilitation needs of the elderly for shoulder / neck joints. Attached Figure Description

[0018] Figure 1 This is a side view of the overall structure of the training device described in this utility model; Figure 2 This is a schematic diagram of the overall structure of the training device described in this utility model from the front view. Figure 3 for Figure 1 A schematic diagram of the structure of the relevant parts of the active frame (excluding handrails) in the training equipment shown; Figure 4 A schematic diagram of the pin-type connection structure between the front end of the active frame and the column; Figure 5 for Figure 4 Enlarged structural diagram of section A in the Chinese box; Figure 6 A schematic diagram of the training equipment after the activity frame has been laid flat. Figure 7 A schematic diagram of the surface of the belt roller and the back of the conveyor belt; Figure 8 This is a schematic diagram of the surface structure of the conveyor belt; Figure 9 This is a schematic diagram of the structure of the training device of this invention for users to exercise their shoulder and neck joints; Figure 10 This is a side view of the rocker arm assembly. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0021] In the description of this utility model, the term "at least one" means one or more, unless otherwise expressly defined. The terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] The specific implementation of this utility model is as follows: Example: This utility model provides a backward walking downhill training device for knee and shoulder joint rehabilitation. The following, with reference to the accompanying drawings, will further explain the structure and working principle of the backward walking downhill training device for knee and shoulder joint rehabilitation described in this utility model by way of example.

[0023] Reference Figure 1-6 In this example, the equipment frame consists of a bottom frame 11, a movable frame 2, and a vertical frame 12. The vertical frame 12 is located at the front end of the bottom frame 11 and is combined with the bottom frame 11 to form the fixed support 1, which is used to support the movable frame 2.

[0024] The frame is equipped with a simulated hillside, which includes a slope support plate and a conveyor belt; the simulated hillside is located on the movable frame 2. Both the bottom frame 11 and the movable frame 2 are rectangular frame structures, including side borders 111 and 21 on both sides. The bottom frame 11 also includes end cross frames 112 at the front and rear ends. The movable frame 2 also includes an end cross frame 22 at the front end and several intermediate cross frames (not shown in the figure) parallel to the end cross frames. The side borders 111 on both sides of the bottom frame 11 are located above the end cross frames 112 of the bottom frame 11.

[0025] The vertical frame 12 includes a left column 122 and a right column 123 vertically arranged on both sides. The lower ends of the left column 122 and the right column 123 are located above the end horizontal frame 112 of the bottom frame 11, and are fixedly connected to the front end of the side frame 111 on both sides of the bottom frame 11.

[0026] The rear end of the movable frame 2 is rotatably connected to the rear end of the bottom frame 11 via a hinge. A set of latching mechanisms is installed at both ends of the end crossbeam 22 at the front end of the movable frame 2. The latches of the left and right latching mechanisms are horizontally coaxial. The two side columns 122 and 123 of the vertical frame are upright columns, perpendicular to the ground. Multiple insertion holes 1201 at different heights and positions are provided on the left column 122 and right column 123 to engage with the latches of the latching mechanisms. These insertion holes 1201 are arranged in an arc shape on the columns 122 and 123, with the axis of the arc coaxial with the rotation axis of the movable frame 2 relative to the bottom frame 11. Specifically, 10 insertion holes 1201 are spaced apart on the inner side of the columns, with the 10 insertion holes on the left column 122 and the 10 insertion holes on the right column 123 aligned one-to-one. The 10 insertion holes are evenly arranged on the movement trajectory formed by the latches as the movable frame rotates. The tilt angle of the movable frame differs by 1 degree between adjacent insertion holes. When using the highest socket, the movable frame tilts at an angle of 35 degrees.

[0027] Handrails 3 are fixedly installed on the two side frames 21 of the movable frame 2, and the handrails 3 are parallel to the simulated hillside. The handrails 3 include vertical supports 31 and horizontal handrails 32. The lower end of the vertical supports 31 is fixed to the two side frames 21 of the movable frame 2, and the upper end is fixed to the horizontal handrails 32. A horizontal beam 321 is set at the front end of the horizontal handrails 32.

[0028] like Figure 1 , 6 As shown in Figure 10, a rocker arm assembly is provided on one side of the outer side of the horizontal handrail 32; the rocker arm assembly includes a rocker arm rod 33, a rocker arm shaft 34, a rocker arm fixing clamp 35, and a rocker arm handle 36.

[0029] The rocker arm fixing clamp 35 includes a first clamping end 351 and a second clamping end 352. The first clamping end 351 is used to fix the horizontal handrail 32, and the second clamping end 352 is used to fix the rocker arm shaft 34. The first clamping end 351 and the second clamping end 352 each include two clamping parts, and a clamping hole is formed between the two clamping parts. A fastening screw is provided between the two clamping parts. When the fastening screw is tightened, the two clamping parts are clamped and fixed to the horizontal handrail 32 or the rocker arm shaft 34 located in the clamping hole.

[0030] Specifically, the two clamping parts of the first clamping end 351 are fitted onto one side of the outer side of the transverse handrail 32, and the screws are tightened to clamp and fix the two clamping parts to the transverse handrail 32. The rocker arm shaft 34 is inserted between the two clamping parts of the second clamping end 352, and a damping bearing 353 is provided between the rocker arm shaft 34 and the two clamping parts of the second clamping end 352. The two clamping parts of the second clamping end 352 are tightened and fixed to the damping bearing 353 by tightening the screws. The upper ends of the rocker arm shaft 34 and the rocker arm rod 33 are fixed, and the rocker arm shaft 34 and the rocker arm rod 33 rotate together. The lower end of the rocker arm rod 33 is connected to the rocker arm handle 36. When the second clamping end 352 is installed below the first clamping end 351, the rocker arm shaft 34 of the rocker arm assembly is in a low position; when the second clamping end 352 is installed above the first clamping end 351, the rocker arm shaft 34 of the rocker arm assembly is in a high position.

[0031] When using, such as Figure 9 As shown, the user stands next to the rocker arm assembly and turns the rocker arm handle 36 with their hand, thereby causing the rocker arm lever 33 to rotate. While the user is turning the rocker arm assembly, their shoulder and neck joints are exercised, which has a certain traction effect, thereby achieving the purpose of exercising the shoulder and neck joints.

[0032] When the slope support plate is raised to a certain angle, it forms an angle with the ground; the optimal angle between the slope support plate and the ground is 18 degrees. With the slope support plate tilted, the transverse handrail 32 also tilts, and the height of the transverse handrail 32 from the ground varies at different points, with the front end of the slope support plate being the highest, and the front end of the transverse handrail 32 also having the highest height from the ground. The larger the angle between the slope support plate and the ground, the higher the height of the transverse handrail 32 from the ground at the same position.

[0033] The first method for adjusting the height of the rocker arm assembly is as follows: Loosen the screws fixing the two clamping parts of the first clamping end 351 to the horizontal handrail 32, allowing the rocker arm fixing clip 35 to move back and forth along the horizontal handrail 32 without falling off; after adjusting to a suitable height, tighten the screws to fix the two clamping parts of the first clamping end 351 to the horizontal handrail 32. The height of the horizontal handrail 32 relative to the ground gradually increases from back to front. As the rocker arm fixing clip 35 moves back and forth along the horizontal handrail 32, its height relative to the ground also changes. The closer the rocker arm fixing clip 35 is to the front end of the horizontal handrail 32, the higher the height of the rocker arm fixing clip 35, the higher the height of the rocker arm shaft 34, and the higher the height of the rocker arm handle 36, thus accommodating a taller user. Conversely, the closer the rocker arm fixing clip 35 is to the rear end of the horizontal handrail 32, the lower the height of the rocker arm fixing clip 35 from the ground, the lower the height of the rocker arm shaft 34 from the ground, and the lower the height of the rocker arm handle 36 from the ground, the shorter the height it is suitable for.

[0034] The second method for adjusting the height of the rocker arm assembly is (fine-tuning the height of the rocker arm assembly): When the rocker arm assembly is in its initial state (the second clamping end 352 is installed below the first clamping end 351), the rocker arm shaft 34 is in a low position. Unscrew the screws securing the two clamping portions of the second clamping end 352 to the rocker arm shaft 34, and remove the rocker arm shaft 34. Rotate the second clamping end 352 upwards by 180 degrees. The central axis of the clamping holes of the two clamping portions of the second clamping end 352 moves upwards. Insert the rocker arm shaft 34 into the two clamping portions of the second clamping end 352 from the outside of the handrail, and tighten the screws to fix the two clamping portions of the second clamping end 352 to the rocker arm shaft 34.

[0035] At this time, the second clamping end 352 is installed above the first clamping end 351, the rocker arm shaft 34 is in a high position, and the height of the rocker arm shaft 34 from the ground increases. The height increase is the height difference between the center line of the rocker arm shaft 34 before it is flipped and after it is flipped 180 degrees.

[0036] When it is necessary to lower the height, unscrew the screws that fix the two clamping parts of the second clamping end 352 to the rocker arm shaft 34, remove the rocker arm shaft 34, and then flip the second clamping end downwards by 180 degrees to finely adjust and lower the height.

[0037] When the second clamping end 352 of the rocker arm fixing clamp 35 is rotated upwards by 180 degrees, the height of the rocker arm handle 36 above the ground increases; when the second clamping end 352 of the rocker arm fixing clamp 35 is rotated downwards by 180 degrees, the height of the rocker arm handle 36 above the ground decreases. This achieves fine-tuning, allowing users with similar heights to quickly find a suitable height. The height of the rocker arm shaft 34 of the rocker arm assembly is 1m-1.8m above the ground.

[0038] The slope support plate 4 is installed inside the movable frame 2. The slope support plate 4 has a rectangular structure, and several connecting plates 41 are spaced apart on both sides of the slope support plate 4. One end of the connecting plate 41 is fixedly connected to the two side frames 111 of the bottom frame 11 by screws, and the other end is fixedly connected to the slope support plate 4 from below. It provides support for the slope support plate from below.

[0039] like Figure 3 As shown, a front belt roller 51, which is the driving roller, is installed between the front ends of the side frames 21 of the movable frame 2. A rear belt roller 52 is installed between the rear ends of the side frames 21 of the movable frame 2. A motor mounting base 231 is provided on the end cross frame 22 at the front end of the movable frame 2. A drive motor 6 is mounted on the motor mounting base 231. The output end of the drive motor 6 is connected to the driving roller through a transmission mechanism, driving the driving roller to rotate, and the front belt roller 51 to rotate. The upper surface of the slope support plate 4 is tangent to the circumferential surface of the front belt roller 51 and the rear belt roller 52 from the top.

[0040] The conveyor belt 7 starts above the rear belt roller 52, extends forward along the upper surface of the slope support plate 4 to above the front belt roller 51, passes down from the front side of the front belt roller 51 to below the front belt roller 51, then extends backward to below the rear belt roller 52, passes up from the rear side of the rear belt roller 52 to above the rear belt roller 52 and closes.

[0041] like Figure 1 A gas spring 13 is provided between the two side frames 21 of the movable frame 2 and the two side frames 111 of the bottom frame 11. The gas spring 13 is an industrial accessory that can provide support, cushioning, braking, height adjustment, and angle adjustment. One end of the pressure cylinder of the gas spring support rod is connected to the side frame 21, and the piston rod of the gas spring support rod is connected to the side frame 111.

[0042] Six connection holes 1111 for connecting to the piston rod are provided on both sides of the frame 111. The farther apart the two ends of the air rod 13 are installed, the smaller the angle between the air rod 13 and the ground; the closer the two ends of the air rod 13 are installed, the larger the angle between the air rod 13 and the ground. When the two ends of the air rod 13 are closest together, the slope support plate is raised, and the angle between the slope support plate and the ground is 35 degrees.

[0043] like Figure 9 Since the users of this utility model are generally elderly people, who have poor physical flexibility and slow reaction, they cannot walk backwards in time when standing on the conveyor belt and must stop abruptly when being carried up by the conveyor belt, this device is designed to ensure the safety of users.

[0044] The emergency stop switch has a magnetic connector 91 at one end, which is attached to the controller (not shown), and the other end is attached to the bottom of the frontmost handrail. A contact line 92 connects the two ends. The magnetic connector 91 is attached to the controller, and the contact line 92 is 3cm above the top of the conveyor belt. When the user's shoe touches the contact line, the magnetic connector disconnects from the controller, and the controller cuts off the motor power.

[0045] The emergency stop switch is magnetically attached to the outer front surface of the frame 21 of the movable frame 2. The emergency stop switch used in this embodiment is a magnetic emergency stop switch (commonly known as a safety key or safety lock) found on commercially available treadmills. It is a safety device that uses magnetic force to keep the circuit conducting and instantly cuts off the power and stops the machine by physically separating the magnet.

[0046] Its core principle is a magnetically operated contactless switch. Specifically, a magnet is embedded in the emergency stop switch. A reed switch (not shown) is installed on the inner front side of the frame 21 of the movable frame 2. The two ends of the reed switch are connected to a low-voltage DC safety circuit, which controls the power supply to the controller-driven motor. When the magnet approaches, the circuit is connected, and the motor operates. When the magnet moves away, the circuit is disconnected, and the motor is de-energized, thus achieving an emergency stop.

[0047] The contact line 92 is 3cm away from the upper surface of the slope support plate. The contact line 92 is suspended and wrapped around the bottom of the two frontmost vertical pillars 31 of the handrail 3. One end of the contact line 92 is connected to an emergency stop switch. When the elderly person is walking backwards, if they are standing on the conveyor belt and cannot walk backwards in time, they will be carried up by the conveyor belt and kick the contact line 92. The contact line 92 will pull the magnetic connector attached to the controller, and the controller will cut off the power to the motor in an emergency, so that the active roller will stop working immediately, thereby ensuring the safety of the elderly person.

[0048] Reference Figure 4 , Figure 5 The latch mechanism is located at both ends of the end cross frame 22 at the front end of the movable frame. It includes a latch 81, a spring 82, and a pull wire 83. The latch 81 is slidably installed, and its plug 811 can be inserted into the socket 1201. A stop 812 is provided on the end of the latch 81 near the plug 811, and the stop 812 is fixed to the latch 81. The spring 82 is sleeved on the latch 81, and its end near the plug abuts against the stop. The pull wire 83 is connected to the tail end of the latch 81. The pull wires of the left and right latch mechanisms extend towards the middle and are connected together. A handle connected to the pull wire can be provided in the middle of the end cross frame 22, or a notch can be provided for fingers to be inserted into the tubular structure of the end cross frame and pulled outwards.

[0049] In this example, as an auxiliary function, the activity frame is laid flat to simulate a level hillside, which can be used for training walking on flat ground. Figure 6 As shown. To achieve a leveling of the movable frame, you can choose to have a pin hole at the bottom of the column. When the pin mechanism at the front of the movable frame is connected to the pin hole at the bottom of the column, the simulated hillside is perfectly level. Alternatively, you can choose to have a foot at the front of the movable frame. The foot can be set relatively low, so that when the movable frame is level, the foot rests on the bottom frame 11. Or it can be set relatively high, so that when the movable frame is level, the foot rests on the ground.

[0050] For easy storage, the connection between the lower end of the vertical support 31 of the handrail 3 and the frame 21 of the movable frame 2, and the connection between the bottom of the column of the vertical frame 12 and the bottom frame 11 are all detachable connections, preferably plug-in connection structures.

[0051] Reference Figure 7The front belt roller 51 has a knurled surface, and the back of the conveyor belt 7 (the side in contact with the belt roller) also has a knurled surface to ensure a large coefficient of friction between them, thereby better preventing slippage between the conveyor belt 7 and the drive roller. The figure is for illustrative purposes only.

[0052] Reference Figure 8 The surface of the conveyor belt 7 is provided with evenly distributed circular protrusions 71.

Claims

1. A backward walking downhill training device for knee and shoulder / neck joint rehabilitation, comprising a frame, wherein a simulated hillside is provided on the frame, the simulated hillside includes a slope support plate and a conveyor belt, the upper and lower layers of the conveyor belt are respectively located above and below the slope support plate, the back of the upper layer of the conveyor belt abuts against the upper surface of the slope support plate, the slope support plate is higher at the front end and lower at the rear end, and the upper layer of the conveyor belt moves from the rear end to the front end of the slope support plate in the uphill direction under the drive of a transmission roller; the frame includes a movable frame and a fixed support, the simulated hillside is located on the movable frame, the rear end of the movable frame is rotatably connected to the fixed support, the fixed support has multiple connection positions of different heights for connecting to the front end of the movable frame; handrails are provided on both sides of the movable frame, the handrails are fixedly connected to the movable frame, and the handrails are parallel to the simulated hillside; characterized in that: It also includes a rocker arm assembly disposed on the outside of the handrail on one side, the height of the rocker arm assembly being adjustable; the rocker arm assembly includes a rocker arm rod, a rocker arm shaft, a rocker arm fixing clamp, and a rocker arm handle; one end of the rocker arm rod is rotatably mounted on the rocker arm fixing clamp via the rocker arm shaft; the rocker arm fixing clamp is mounted on the handrail; and the rocker arm handle is mounted on the other end of the rocker arm rod.

2. The backward walking downhill training device according to claim 1, characterized in that: The rocker arm fixing clamp includes two clamping ends: a first clamping end for fixing to the handrail and a second clamping end for fixing the rocker arm shaft. When the second clamping end is installed below the first clamping end, the rocker arm assembly is in a low position; when the second clamping end is installed above the first clamping end, the rocker arm assembly is in a high position.

3. The backward walking downhill training equipment according to claim 2, characterized in that: The clamping end includes two clamping parts, with a clamping hole formed between the two clamping parts. A fastening screw is provided between the two clamping parts. When the fastening screw is tightened, the two clamping parts are clamped and fixed to the handrail or rocker arm shaft located in the clamping hole.

4. The backward walking downhill training device according to claim 3, characterized in that: A damping bearing is provided between the rocker arm and the rocker arm shaft, or between the rocker arm shaft and the clamping part of the rocker arm fixing clamp.

5. The backward walking downhill training equipment according to claim 1, characterized in that: The front ends of the handrail are connected by horizontal bars; the slope support plate is installed on the movable frame, and the front end of the movable frame is connected to the fixed bracket through a pin mechanism; the front end of the fixed bracket is provided with a column, which is an upright column perpendicular to the ground, and multiple insertion holes of different heights and positions are provided on the column to cooperate with the pins of the pin mechanism, and the multiple insertion holes are distributed in an arc shape on the column.

6. The backward walking downhill training device according to claim 5, characterized in that: A pneumatic rod is provided between the movable frame and the fixed support. One end of the pneumatic rod is connected to the movable frame, and the other end of the pneumatic rod is connected to the fixed support.

7. The backward walking downhill training device according to claim 6, characterized in that: The movable frame or fixed bracket has multiple connection holes on both sides for connecting to the ends of the air rod; the farther the two ends of the air rod are installed, the smaller the angle between the air rod and the ground; the closer the two ends of the air rod are installed, the larger the angle between the air rod and the ground.

8. The backward walking downhill training device according to claim 7, characterized in that: The angle between the slope support plate and the ground is between 0 and 35 degrees.

9. The backward walking downhill training device according to claim 1, characterized in that: The movable frame is provided with a front belt roller and a rear belt roller at the front and rear ends corresponding to the slope support plate, respectively, for mounting the conveyor belt. The upper surface of the slope support plate is tangent to the circumferential surface of the front belt roller and the rear belt roller from the top. The front belt roller is the driving roller, and the motor for driving the driving roller is installed at the front of the movable frame. The output end of the motor is connected to the driving roller through a transmission mechanism.

10. The backward walking downhill training device according to claim 9, characterized in that: It also includes an emergency stop switch, one end of which is a magnetic connector that is attached to the controller; the other end is attached to the bottom of the frontmost handrail; both ends are connected by a touch line, which is 2-5cm above the top of the conveyor belt; when the user's shoe touches the touch line, the magnetic connector disconnects from the controller, and the controller cuts off the motor power.

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