Pedal self-locking bottom plate and bedside upper limb rehabilitation training system

Abstract

The present application relates to the technical field of rehabilitation exercise training instruments, and particularly relates to a stepping self-locking chassis and a bedside upper limb rehabilitation training system. The pedal is fixedly connected with the rotating rod, and the pedal is restored to the initial position after being stepped on by the torsional spring. One end of the swing piece is fixedly connected with the rotating rod, and the self-locking block is provided with a self-locking position and an unlocking position. The two ends of the rotating rod are both hingedly connected with a connecting rod unit. Once the pedal is pressed down, the rotating rod drives the swing piece to swing, the swing piece moves from the unlocking position and stays on the self-locking position. At the same time, the rotating rod drives the connecting rod unit to move, so that the supporting piece is lowered and supported on the ground, the chassis is lifted, and the stepping self-locking chassis is limited and fixed. When the pedal is reset and pressed down again, the swing piece moves from the self-locking position and stays on the unlocking position, the rotating rod drives the connecting rod unit to move, so that the supporting piece is lifted and separated from the ground, and the stepping self-locking chassis can be freely moved. The present application is convenient to use, simple to operate, and greatly improves the operation performance of the product.

Description

Technical Field

[0001] This invention relates to the field of rehabilitation exercise training equipment technology, and in particular to a self-locking foot pedal chassis and a bedside upper limb rehabilitation training system. Background Technology

[0002] Currently available bedside upper limb rehabilitation training systems are mostly single-lateral telescopic structures, with limited telescopic range, poor adaptability, and susceptibility to limitations imposed by the width of the hospital bed. Furthermore, most bedside rehabilitation machines on the market use a dual-pedal or single-pedal bidirectional foot-operated mode for chassis positioning and fixation. In the dual-pedal mode, one pedal controls the foot cup's movement by placing it on the ground, while the other pedal retracts it. This structural design is redundant and complex to assemble. The single-pedal bidirectional mode uses a rotating beam in the middle of one pedal; stepping forward lifts the machine, raising the other end, and stepping backward lowers it. This single-pedal bidirectional mode is confusing for users, making it difficult to intuitively determine the current lifting mode and leading to incorrect pedal placement. It is user-unfriendly and, due to the bidirectional foot-operated design, occupies a significant amount of space. Summary of the Invention

[0003] In order to address the technical deficiencies mentioned in the background section, the present invention aims to provide a self-locking foot pedal chassis and a bedside upper limb rehabilitation training system.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A self-locking foot-operated chassis, comprising: Base frame; A pedal assembly, comprising a pedal, a torsion spring, and a rotating rod, wherein the pedal is fixedly connected to the rotating rod, and the torsion spring is fitted onto the rotating rod to drive the pedal to return to its initial position after being stepped on; The self-locking assembly includes a swing member and a self-locking block. One end of the swing member is fixedly connected to the rotating rod, and the self-locking block is fixed on the base frame. The self-locking block is provided with a self-locking position and an unlocking position. Two sets of linkage limiting assemblies, each linkage limiting assembly including a linkage unit and a support member, with each end of the rotating rod hinged to a linkage unit; the upper end of the support member is connected to the base frame, and the linkage unit is used to drive the support member to rise or fall so that the pedal self-locking chassis is limited and fixed or moves freely; Specifically, when the pedal is pressed for the first time, the swing member is in the self-locking position, and the lower end of the support member is connected to the ground support to make the self-locking pedal base detach from the ground, and the self-locking pedal base is in a limited state; when the pedal is pressed for the second time, the swing member is in the unlocking position, the lower end of the support member is separated from the ground, and the self-locking pedal base is in a movable state.

[0005] By adopting the above technical solution, when the pedal is pressed down by an external force, the pedal drives the swinging component to swing via the rotating rod. The swinging component moves from the unlocked position and stays in the self-locking position. Simultaneously, the rotating rod also drives two sets of linkage limiting components to rotate, thus restricting the movement of the self-locking chassis. The rotating rod drives the linkage unit to move, causing the support component to descend and rest on the ground. The pedal can return to its initial position under the force of the torsion spring. When the pedal is subjected to external force again, the swinging component moves from the self-locking position and stays in the unlocked position. The rotating rod drives the linkage unit to move, causing the support component to rise and leave the ground, allowing the self-locking chassis to move freely. A single pedal realizes the self-locking and unlocking process, making it convenient to use and easy to operate. It is also simple to operate, not easily confused, and has a high degree of equipment friendliness, greatly improving product operability.

[0006] Furthermore, the self-locking block is provided with an annular track groove, and the track groove is provided with a self-locking position and an unlocking position. The other end of the swing member is rotatably disposed in the track groove, which can effectively limit the end of the swing member within the self-locking block, thereby improving the stability of the connection.

[0007] Furthermore, the inner wall of the track groove is configured as an arc surface structure with a gradually changing curvature. The track groove protrudes from the inner wall of the unlocking position and is recessed from the inner wall of the self-locking position. The outer wall of the track groove corresponds to the inner wall of the track groove. The track groove is configured in a multi-step single-channel mode, allowing the movable rod to circulate only in one direction within the track groove, preventing reverse movement.

[0008] Furthermore, the swinging component includes a swing rod, a connecting block, and a movable rod. The upper end of the swing rod is fixedly connected to the rotating rod, and the lower end of the swing rod is fixedly connected to one end of the connecting block. The other end of the connecting block is connected to one end of the movable rod, and the other end of the movable rod is located within the track groove. The connecting block and the movable rod are configured in an L-shape. The connecting block extends the movable rod outward, providing space for the swinging of the movable rod, resulting in a more compact structure.

[0009] Furthermore, the swing element also includes a first spring, one end of which is connected to one side of the connecting block. The other end of the first spring is connected to the other end of the movable rod, and the first spring is used to press the other end of the movable rod against the track groove. The first spring maintains a preload on the movable rod to keep the end side of the movable rod pressed against the bottom surface of the track groove, which can prevent the movable rod from falling off the self-locking block and improve the self-locking effect.

[0010] Furthermore, the linkage unit includes a long rod, a transmission block, a rotating shaft, and a cam. The long rod is hinged to the rotating rod, one end of the transmission block is hinged to the long rod, and the other end of the transmission block is hinged to the rotating shaft. The cam is fixedly mounted on the rotating shaft, and the cam is eccentrically positioned relative to the rotating shaft. The pedal assembly drives the cam to rotate via the long rod, the transmission block, and the rotating shaft. The side of the cam with the largest distance from the rotating shaft abuts against the upper surface of the support member, causing the support member to descend and support itself on the ground. Utilizing the characteristics of the cam structure, the rising and falling movements of the support member are automatically realized during the self-locking and unlocking process, making it more convenient to use.

[0011] Furthermore, a second spring is fitted onto the support member, which is used to retract the descending support member to its initial state, thereby improving the efficiency of the support member's automatic rise and reset.

[0012] A bedside upper limb rehabilitation training system includes any of the above-described self-locking foot pedals, a height adjustment component, a telescopic component, and a training execution end; the lower end of the height adjustment component is vertically mounted on the self-locking foot pedals; one end of the telescopic component is connected to the upper end of the height adjustment component, and the other end of the telescopic component is provided with the training execution end.

[0013] Furthermore, the telescopic assembly includes a primary telescopic column, a secondary telescopic column, and a rotating shaft. One end of the primary telescopic column is fixedly connected to the height adjustment assembly, the other end of the primary telescopic column is rotatably connected to the lower end of the rotating shaft, the upper end of the rotating shaft is rotatably connected to one end of the secondary telescopic column, and the other end of the secondary telescopic column is provided with the training execution end. This greatly improves the coverage of the equipment and provides convenience for medical personnel to operate.

[0014] In summary, the beneficial effects of the present invention are as follows: This invention utilizes a pedal that, when pressed down by an external force, causes a swinging component to oscillate via a rotating rod. The swinging component moves from the unlocked position and rests in the self-locking position. Simultaneously, the rotating rod also drives two sets of linkage limiting components to rotate, raising the base frame and restricting movement of the self-locking chassis when stepped on. The rotating rod then moves the linkage unit, causing the support component to descend and rest on the ground. The pedal can return to its initial position under the force of a torsion spring. When the pedal is subjected to external force again, the swinging component moves from the self-locking position and rests in the unlocked position. The rotating rod then moves the linkage unit, causing the support component to rise and leave the ground, allowing the self-locking chassis to move freely when stepped on. This single pedal enables both locking and unlocking, making it convenient and easy to use. Its simple operation avoids confusion, significantly improving product operability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the self-locking foot pedal chassis of the present invention; Figure 2 This is a schematic diagram of the self-locking chassis of the present invention when the pedal is pressed down; Figure 3 This is a schematic diagram of the installation structure of the linkage limiting assembly of the self-locking chassis of the present invention; Figure 4 This is a schematic diagram of the pedal assembly of the self-locking pedal chassis of the present invention; Figure 5 This is a schematic diagram of the connection structure between the pedal assembly and the self-locking assembly of the pedal self-locking chassis of the present invention; Figure 6 This is an enlarged structural schematic diagram of the self-locking component installation structure of the self-locking chassis of the present invention. Figure 7 This is a schematic diagram of the bedside upper limb rehabilitation training system of the present invention; Figure 8 This is a schematic diagram of the bedside upper limb rehabilitation training system of the present invention from another perspective.

[0016] Explanation of the reference numerals in the figure: 1. Self-locking chassis; 12. Base frame; 121. Base plate; 122. Connecting plate; 123. Steering wheel; 13. Pedal assembly; 131. Pedal; 132. Torsion spring; 133. Rotating rod; 14. Self-locking assembly; 141. Swing rod; 142. Connecting block; 143. First spring; 144. Movable rod; 145. Self-locking block; 1451. Track groove; 1452. Self-locking position; 1453. Unlocking position; 15. Linkage limit assembly; 151. Linkage unit; 1511. Long rod; 1512. Hinge block; 1513. Transmission block; 1514. Rotating shaft; 1515. Cam; 1516. Adjusting shaft; 152. Support component; 153. Second spring; 2. Bedside upper limb rehabilitation training system; 22. Height adjustment component; 23. Telescopic component; 231. Primary telescopic column; 232. Secondary telescopic column; 233. Rotating axis; 24. Rotating screen; 25. Telescopic buffer support component; 26. Training execution end. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0018] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting this invention.

[0019] In the description of this invention, the use of terms such as "a number" means one or more, with "more than" meaning two or more. Terms like "greater than," "less than," and "exceeding" are understood to exclude the stated number, while terms like "above," "below," and "within" are understood to include the stated number. The use of terms like "first," "second," and "third" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, the number of indicated technical features, or the sequential relationship between indicated technical features.

[0020] The following is in conjunction with the appendix Figure 1-8 The embodiments of the present invention will be described in further detail below.

[0021] A self-locking foot-operated chassis 1, such as Figure 1 , Figure 2 , Figure 3 As shown, it includes a base frame 12, a pedal assembly 13, a self-locking assembly 14, and two sets of linkage limit assemblies 15. The pedal assembly 13 drives the self-locking assembly 14 and the two sets of linkage limit assemblies 15 to work together to control the locking or unlocking of the pedal self-locking chassis 1, making operation convenient.

[0022] In this embodiment, please refer to Figure 1 The base frame 12 includes two base plates 121, a connecting plate 122, and four steering wheels 123. One end of the connecting plate 122 is fixedly connected to one base plate 121, and the other end of the connecting plate 122 is fixedly connected to the other base plate 121. The length direction of the connecting plate 122 intersects with the length direction of the two base plates 121. A steering wheel 123 is provided on the underside of both ends of each base plate 121. The steering wheels 123 enable omnidirectional movement of the machine and provide support for the assembly of the overall structural components.

[0023] In this embodiment, please refer to Figure 1 , Figure 4The pedal assembly 13 includes a pedal 131, a torsion spring 132, and a rotating rod 133. The pedal 131 is fixedly connected to the rotating rod 133, and the torsion spring 132 is fitted onto the rotating rod 133 to drive the pedal 131 to return to its initial position after being stepped on. The rotating rod 133 is rotatably mounted on the connecting plate 122. The pedal 131 is fitted onto one side of the middle of the rotating rod 133, and two torsion springs 132 are provided, one on each side of the pedal 131. When the pedal 131 is stepped on, the torsion spring 132 generates a deformation force. When the external force on the pedal 131 is removed, it returns to its initial position under the action of the elastic deformation force of the torsion spring 132. When the movable rod 144 is in the self-locking position 1452 or the unlocking position 1453, the pedal 131 can always be reset to its initial position, greatly improving the ease of locking and unlocking the self-locking assembly 14.

[0024] In this embodiment, please refer to Figure 1 , Figure 5 , Figure 6 The self-locking component 14 includes a swing member and a self-locking block 145. One end of the swing member is fixedly connected to the rotating rod 133. The self-locking block 145 is fixed on the base frame 12. The self-locking block 145 is provided with a self-locking position 1452 and an unlocking position 1453.

[0025] Specifically, the self-locking block 145 is provided with an annular track groove 1451, and the track groove 1451 is provided with a self-locking position 1452 and an unlocking position 1453. The other end of the swing member is rotatably disposed in the track groove 1451. The track groove 1451 can effectively limit the end of the swing member within the self-locking block 145, thereby improving the stability of the connection.

[0026] The inner wall of the track groove 1451 is designed with a gradually changing curvature arc surface, facilitating the circular motion of the swinging component along the track groove 1451 and improving the stability and efficiency of the motion. The track groove 1451 protrudes from the inner wall of the unlocking position 1453 and is recessed from the inner wall of the self-locking position 1452. The unlocking position 1453 and the self-locking position 1452 are positioned opposite each other within the track groove 1451, with the unlocking position 1453 located closer to the swinging component. The line connecting the unlocking position 1453 and the self-locking position 1452 is inclined, with the slot closest to the swinging component designated as the unlocking position 1453, and the slot furthest from the swinging component designated as the self-locking position 1452, facilitating the stopping of the swinging component. The outer wall of the track groove 1451 corresponds to the inner wall of the track groove 1451. The track groove 1451 is configured as a multi-step single-channel mode, which allows the movable rod 144 to circulate in only one direction within the track groove 1451, preventing reverse movement. The cross-section of the area enclosed by the track groove 1451 can be configured as a heart-shaped structure.

[0027] The swing component includes a swing rod 141, a connecting block 142, a first spring 143, and a movable rod 144. The upper end of the swing rod 141 is fixedly connected to the rotating rod 133. The upper end of the swing rod 141 is sleeved on the rotating rod 133, and the swing rod 141 and the rotating rod 133 are locked together with screws, making installation and removal easier. The swing rod 141 is positioned on the side of the rotating rod 133 away from the pedal 131, a recessed design that results in a more compact structure.

[0028] The lower end of the swing rod 141 is fixedly connected to one end of the connecting block 142 by a pin. The other end of the connecting block 142 is connected to one end of the movable rod 144, and the other end of the movable rod 144 is located in the track groove 1451. The connecting block 142 and the movable rod 144 are configured as an L-shaped structure. The connecting block 142 extends the movable rod 144 outward, providing space for the swing of the movable rod 144, resulting in a more compact structure.

[0029] The end face area of ​​the movable rod 144 located in the track groove 1451 is larger than the end face area of ​​the end of the movable rod 144 connected to the connecting block 142. One end of the first spring 143 is in contact with one side of the connecting block 142, and the other end of the first spring 143 is in contact with the other end of the movable rod 144. The first spring 143 is used to keep the other end of the movable rod 144 in contact with the track groove 1451. The first spring 143 always maintains a preload on the movable rod 144 so that the side of the end of the movable rod 144 is in close contact with the bottom surface of the track groove 1451, which can prevent the movable rod 144 from falling off the self-locking block 145 and improve the self-locking effect.

[0030] In this embodiment, please refer to Figure 3 The linkage limiting assembly 15 includes a linkage unit 151 and a support member 152. Both ends of the rotating rod 133 are hinged to a linkage unit 151. The upper end of the support member 152 is connected to the base frame 12. The linkage unit 151 is used to drive the support member 152 to rise or fall, thereby limiting and fixing the self-locking pedal base 1 or allowing it to move freely. Specifically, when the pedal 131 is pressed for the first time, the swing member is in the self-locking position 1452, the lower end of the support member 152 is connected to the ground support, the base frame 12 is raised, and the self-locking pedal base 1 is in a limited and fixed state. When the pedal 131 is pressed for the second time, the swing member is in the unlocked position 1453, the lower end of the support member 152 is separated from the ground, and the self-locking pedal base 1 is in a movable state. A second spring 153 is fitted onto the support member 152. The second spring 153 is used to retract the lowered support member 152 to its initial state, improving the efficiency of the automatic rising and resetting of the support member 152.

[0031] Specifically, the linkage unit 151 includes a long rod 1511, a hinge block 1512, a transmission block 1513, a rotating shaft 1514, and a cam 1515. The long rod 1511 and the rotating rod 133 are hinged together via the hinge block 1512. The long rod 1511 is horizontally positioned, and its length direction intersects with the length direction of the rotating rod 133. One end of the hinge block 1512 connected to the long rod 1511 has an elongated adjustment groove, and an adjustment shaft 1516 is provided on the side of the long rod 1511, with its end slidably positioned within the adjustment groove. When the rotating rod 133 rotates, it drives the hinge block 1512 to rotate, and the hinge block 1512, through the adjustment shaft 1516, drives the long rod 1511 to move horizontally.

[0032] One end of the transmission block 1513 is hinged to the long rod 1511, and the other end is hinged to the rotating shaft 1514. The cam 1515 is fixedly mounted on the rotating shaft 1514, and the cam 1515 and the rotating shaft 1514 are eccentrically positioned. The pedal assembly 13 drives the cam 1515 to rotate via the long rod 1511, the transmission block 1513, and the rotating shaft 1514. The side of the cam 1515 with the largest distance from the rotating shaft 1514 abuts against the upper surface of the support member 152, causing the support member 152 to descend and support the ground. Utilizing the structural characteristics of the cam 1515, the rising and falling movements of the support member 152 are automatically realized during the self-locking and unlocking process, making it more convenient to use.

[0033] The support member 152 can be set to four, with one support member 152 on one side of each steering wheel 123 to improve stability. Each linkage unit 151 is equipped with two transmission blocks 1513, two rotating shafts 1514 and two cams 1515. One transmission block 1513, rotating shaft 1514 and cam 1515 form a group, which are correspondingly set at both ends of the long rod 1511. Each group of transmission blocks 1513, rotating shaft 1514 and cam 1515 corresponds to one support member 152, which can save costs and make operation more convenient.

[0034] The working principle of this embodiment will be explained in detail below.

[0035] In the initial state, the movable lever 144 is in the unlocked position 1453, the side of the cam 1515 with the smaller distance from the rotating shaft 1514 contacts the support member 152, the support member 152 is separated from the ground, the steering wheel 123 touches the ground, and the self-locking chassis 1 can move freely when stepped on.

[0036] When force is applied to pedal 131 for the first time, pedal 131 drives rotating rod 133 to rotate. The oscillating component oscillates to a certain extent with the rotation of rotating rod 133, causing movable rod 144 to rotate from unlocked position 1453 to self-locking position 1452. Simultaneously, the rotation of rotating rod 133 also causes the long rod 1511 to move horizontally via the oscillation of hinge block 1512, causing transmission block 1513 to oscillate, thereby driving rotating shaft 1514 and its cam 1515 to rotate. At this time, the side of cam 1515 furthest from rotating shaft 1514 abuts against support member 152. Under the squeezing force of cam 1515, support member 152 descends and supports itself on the ground, and second spring 153 is in a compressed state. After the external force is removed, the pedal 131 returns to its initial state under the force of the torsion spring 132, while the movable rod 144 remains in the self-locking position 1452, thereby keeping the rotating rod 133, the long rod 1511, the rotating shaft 1514, the cam 1515, etc., in a fixed state, the support member 152 is always in the state of supporting the base frame 12, the steering wheel 123 is suspended, and the movement is restricted by stepping on the self-locking chassis 1.

[0037] A second force is applied to pedal 131, causing pedal 131 to rotate rotating rod 133. The oscillating component swings to a certain extent with the rotation of rotating rod 133, causing movable rod 144 to rotate from self-locking position 1452 to unlocking position 1453. Simultaneously, the rotation of rotating rod 133 also pulls long rod 1511 back through the swinging of hinge block 1512, causing long rod 1511 to drive transmission block 1513 to swing, thereby driving rotating shaft 1514 and its cam 1515 to rotate. At this time, the side of cam 1515 with the smaller distance from rotating shaft 1514 abuts against support member 152, the squeezing force of cam 1515 on support member 152 is removed, and under the restoring force of second spring 153, support member 152 rises and separates from the ground. After the external force is removed, the pedal 131 returns to its initial state under the force of the torsion spring 132, while the movable rod 144 remains in the unlocked position 1453. This keeps the rotating rod 133, the long rod 1511, the rotating shaft 1514, the cam 1515, etc., in a fixed state and they will not rotate again as the pedal 131 resets. The steering wheel 123 touches the ground, and the self-locking chassis 1 can move freely when stepped on.

[0038] In another embodiment, please refer to Figure 7 , Figure 8A bedside upper limb rehabilitation training system 2 includes any of the above-mentioned self-locking foot pedals 1, a height adjustment component 22, a telescopic component 23, a rotating screen 24, multiple sets of telescopic buffer support components 25, and a training execution end 26. The self-locking foot pedal 1 can achieve self-locking, unlocking, and omnidirectional movement. The self-locking foot pedal 1 has the same structure as in the above embodiments; please refer to the relevant content above for details. The lower end of the height adjustment component 22 is vertically mounted on the self-locking foot pedal 1. The height adjustment component 22 can flexibly adjust the height of the device according to different rehabilitation needs, improving compatibility and making it more convenient to use. The rotating screen 24 is rotatably mounted on the upper end of the height adjustment component 22. The rotating screen 24 can rotate 360 ​​degrees, facilitating operation of the device by medical staff and improving human-computer interaction.

[0039] One end of the telescopic component 23 is connected to the upper end of the height lifting component 22, and the other end of the telescopic component 23 is provided with a training execution end 26. The telescopic component 23 includes a primary telescopic column 231, a secondary telescopic column 232, and a rotating shaft 233. One end of the primary telescopic column 231 is fixedly connected to the height lifting component 22, and the other end of the primary telescopic column 231 is rotatably connected to the lower end of the rotating shaft 233. The upper end of the rotating shaft 233 is rotatably connected to one end of the secondary telescopic column 232, allowing the secondary telescopic column 232 to rotate 180 degrees, thus increasing the coverage area of ​​the device's execution end. The other end of the secondary telescopic column 232 is provided with the training execution end 26. This greatly improves the usability of the equipment and provides convenience for medical personnel.

[0040] Telescopic buffer support assemblies 25 are installed on both the height lifting assembly 22 and the telescopic assembly 23 to reduce resistance during the telescopic process and provide support for the extended section, thereby improving machine stability. The telescopic buffer support assembly 25 on the telescopic assembly 23 is not shown in the figure.

[0041] This bedside upper limb rehabilitation training system 2 can be raised and limited by pressing a single pedal 131, which automatically returns to the starting position. When the machine needs to be lowered for movement, pressing the pedal 131 again retracts and fixes the machine, and the pedal 131 automatically returns to the starting position, allowing the machine to move. The system is easy to operate, simple to use, and highly user-friendly, greatly improving operational performance. The medical device is also equipped with a chassis featuring omnidirectional wheels, allowing for omnidirectional rotation and lateral movement, enabling flexible placement in various spaces. The device has a three-stage telescopic configuration, with two stages of horizontal telescopic extension. Combined with the rotating shaft 233, this increases the machine's coverage area and allows for fine-tuning of the actuator towards the patient without moving the entire machine, increasing the convenience for medical staff. It can be adapted to a wider range of bed sizes and models, enhancing the product's competitiveness.

[0042] This bedside upper limb rehabilitation training system 2 features omnidirectional mobility, facilitating movement and position adjustment in confined spaces. The training execution end 26 has a two-stage telescopic effect and a rotating hinge point at the secondary transmission stage, allowing the training execution end 26 to rotate 180 degrees around the hinge point. This significantly expands the equipment's usability and provides convenience for medical staff. The entire machine can be height-adjusted to suit different bed configurations. Telescopic buffer support components 25 are designed at the outlet positions of each telescopic section to assist and support the extended end, reducing resistance during telescopic movement and facilitating operation by medical staff. This invention allows a single pedal 131 to control two states of the device. Stepping on pedal 131 lowers the chassis support 152 to contact the ground, lifting the machine to a limit position. Stepping on it again retracts the chassis support 152, allowing the machine to move freely. This ingenious design reduces the number of judgment steps required by medical staff. Furthermore, during use, pedal 131 can be reset to its initial position by the action of the torsion spring 132, making the operation simple and avoiding confusion for operators, thus providing good human-machine interaction. The first spring 143 inside the self-locking assembly 14 not only serves to reset and provide pre-pressure, but also acts as a buffer, making the movements of medical staff smoother and the switching movements more stable when operating the machine. The stepped design of the track groove 1451 on the self-locking block 145 restricts the movable rod 144 to only unidirectional cyclic movement, so that the equipment has a stable self-locking and unlocking state, ensuring the reliability of the operation of the self-locking bedside rehabilitation medical equipment.

[0043] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A self-locking foot-operated chassis (1), characterized in that, include: Base frame (12); The pedal assembly (13) includes a pedal (131), a torsion spring (132) and a rotating rod (133). The pedal (131) is fixedly connected to the rotating rod (133). The torsion spring (132) is fitted on the rotating rod (133) and is used to drive the pedal (131) to return to the initial position after being stepped on. The self-locking assembly (14) includes a swing member and a self-locking block (145). One end of the swing member is fixedly connected to the rotating rod (133). The self-locking block (145) is fixed on the base frame (12). The self-locking block (145) is provided with a self-locking position (1452) and an unlocking position (1453). Two sets of linkage limiting assemblies (15), each linkage limiting assembly (15) includes a linkage unit (151) and a support member (152). Both ends of the rotating rod (133) are hinged to a linkage unit (151). The upper end of the support member (152) is connected to the base frame (12). The linkage unit (151) is used to drive the support member (152) to rise or fall so that the pedal self-locking chassis (1) is limited and fixed or can move freely. When the pedal (131) is pressed for the first time, the swing member is in the self-locking position (1452), and the lower end of the support member (152) is connected to the ground support so that the self-locking chassis (1) is lifted off the ground and the self-locking chassis (1) is in a limited position; when the pedal (131) is pressed for the second time, the swing member is in the unlocking position (1453), the lower end of the support member (152) is separated from the ground, and the self-locking chassis (1) is in a movable state; The self-locking block (145) is provided with an annular track groove (1451), and the track groove (1451) is provided with the self-locking position (1452) and the unlocking position (1453); the other end of the swing member is rotatably disposed in the track groove (1451); The inner wall of the track groove (1451) is configured as an arc surface structure with gradually changing curvature. The track groove (1451) protrudes from the inner wall of the unlocking position (1453) and is recessed from the inner wall of the self-locking position (1452). The line connecting the unlocking position and the self-locking position is inclined. The groove closest to the swing member is set as the unlocking position, and the groove on the side furthest from the swing member is set as the self-locking position. The outer wall of the track groove (1451) corresponds to the inner wall of the track groove (1451). The track groove is configured as a multi-step single-channel mode, so that the swinging component can only circulate in the track groove in one direction. The cross-section of the area enclosed by the track groove is configured as a heart-shaped structure.

2. The self-locking foot-operated chassis (1) according to claim 1, characterized in that, The swinging component includes a swing rod (141), a connecting block (142), and a movable rod (144). The upper end of the swing rod (141) is fixedly connected to the rotating rod (133), and the lower end of the swing rod (141) is fixedly connected to one end of the connecting block (142). The other end of the connecting block (142) is connected to one end of the movable rod (144), and the other end of the movable rod (144) is located in the track groove (1451). The connecting block (142) and the movable rod (144) are configured as an L-shaped structure.

3. The self-locking foot-operated chassis (1) according to claim 2, characterized in that, The swinging component also includes a first spring (143), one end of which is in contact with one side of the connecting block (142), and the other end of which is in contact with the other end of the movable rod (144). The first spring (143) is used to press the other end of the movable rod (144) into the track groove (1451).

4. The self-locking foot-operated chassis (1) according to claim 1, characterized in that, The linkage unit (151) includes a long rod (1511), a transmission block (1513), a rotating shaft (1514), and a cam (1515); the long rod (1511) is hinged to the rotating rod (133), one end of the transmission block (1513) is hinged to the long rod (1511), and the other end of the transmission block (1513) is hinged to the rotating shaft (1514); the cam (1515) is fixedly mounted on the rotating shaft (1514). On 514), the cam (1515) is eccentrically set with the rotating shaft (1514); the pedal assembly (13) drives the cam (1515) to rotate through the long rod (1511), the transmission block (1513), and the rotating shaft (1514). The side of the cam (1515) with the largest distance from the rotating shaft (1514) abuts against the upper surface of the support member (152) so that the support member (152) descends and is supported on the ground.

5. The self-locking foot-operated chassis (1) according to claim 4, characterized in that, A second spring (153) is fitted onto the support member (152), and the second spring (153) is used to retract the descending support member (152) back to its initial state.

6. A bedside upper limb rehabilitation training system (2), characterized in that, It includes the self-locking pedal chassis, height lifting component (22), telescopic component (23), and training execution end (26) as described in any one of claims 1-5; the lower end of the height lifting component (22) is vertically disposed on the self-locking pedal chassis; one end of the telescopic component (23) is connected to the upper end of the height lifting component (22), and the other end of the telescopic component (23) is provided with the training execution end (26).

7. The bedside upper limb rehabilitation training system (2) according to claim 6, characterized in that, The telescopic component (23) includes a primary telescopic column (231), a secondary telescopic column (232), and a rotating shaft (233); one end of the primary telescopic column (231) is fixedly connected to the height lifting component (22), the other end of the primary telescopic column (231) is rotatably connected to the lower end of the rotating shaft (233), the upper end of the rotating shaft (233) is rotatably connected to one end of the secondary telescopic column (232), and the other end of the secondary telescopic column (232) is provided with the training execution end (26).

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