Portable base and rehabilitation training equipment

Abstract

The invention discloses a base convenient to move and rehabilitation training equipment, the base comprises a frame main body and supporting legs rotationally arranged on the two sides of the frame main body, the base further comprises an opening and closing mechanism connecting the frame main body and the supporting legs, a mounting shaft is arranged on the frame main body, and the opening and closing mechanism comprises a damping part which sleeves the periphery of the mounting shaft and can rotate relatively; an elastic damping main body and an axial telescopic space used for changing the axial size of the elastic damping main body are arranged in the damping piece, and an inner ring of the elastic damping main body rubs against the mounting shaft to generate damping force; the two ends of the first connecting rod are rotationally connected to the damping piece and the supporting leg correspondingly, and the rotating damping piece is used for driving the first connecting point of the first connecting rod and the supporting leg to be close to or away from the rotating center of the damping piece; and the driving part is connected to the damping piece, and the driving part drives the damping piece to rotate manually or electrically. The opening and closing state of the supporting legs can be manually or electrically adjusted, and the supporting legs can be stably kept in the state after adjustment is completed.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a portable base and rehabilitation training equipment. Background Technology

[0002] Currently, upper and lower limb rehabilitation training equipment is the main equipment for upper and lower limb paralysis patients to carry out rehabilitation training. Patients train on the upper and lower limb rehabilitation training equipment so that the patients' upper and lower limbs can gradually regain motor perception function and eventually regain daily living abilities such as walking with the lower limbs and lifting with the upper limbs.

[0003] The base of the rehabilitation training equipment can be connected to the main training function parts of the equipment, providing strong and stable support. The legs of the base are usually fixed and cannot be opened or closed. In some training scenarios, there are non-removable obstacles in front of the legs, requiring the legs on both sides of the base to be open or closed and stably maintained in that state to avoid the obstacles.

[0004] Therefore, in view of the above problems, how to make the outriggers openable and stably maintained in their current state is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this application is to provide a portable base and rehabilitation training device, which allows for manual or electric adjustment of the opening and closing state of the outriggers, and ensures that the outriggers can be stably maintained in that state after adjustment.

[0006] To achieve the above objectives, this application provides a portable base, including a frame body and legs rotatably disposed on both sides thereof, and an opening and closing mechanism connecting the frame body and the legs. The frame body is provided with a mounting shaft, and the opening and closing mechanism includes:

[0007] A damping element is sleeved on the outer periphery of the mounting shaft and can rotate relative to it. The damping element has an elastic damping body and an axial expansion space for changing the axial dimension of the elastic damping body. The inner ring of the elastic damping body rubs against the mounting shaft to generate damping force.

[0008] The first link is rotatably connected at both ends to the damping member and the support leg, respectively. The rotating damping member is used to drive the first connection point between the first link and the support leg to move closer to or away from the rotation center of the damping member.

[0009] A drive unit is connected to the damping element, and the drive unit drives the damping element to rotate manually or electrically.

[0010] Optionally, the drive unit includes a drive handle or drive motor fixedly disposed relative to the damping member, and the axis of the drive unit coincides with the axis of the damping member.

[0011] Optionally, the drive unit includes a drive handle or drive motor that is connected to the damping element in a transmission manner, and the axis of the drive unit is parallel to the axis of the damping element; the drive unit and the damping element are connected by a worm gear transmission method.

[0012] Optionally, the damping element includes an inner pressure plate and an outer pressure plate sleeved on the outer periphery of the mounting shaft, wherein the inner pressure plate and the outer pressure plate are engaged to form the axial expansion space; the inner pressure plate and the outer pressure plate have a gap in the axial direction for relative movement between them, and the inner pressure plate and the outer pressure plate are connected by an adjusting screw to adjust the width of the gap.

[0013] Optionally, the axial telescopic space has a cross-section with small dimensions at both ends and gradually increasing dimensions from both ends to the middle, and the outer contour of the elastic damping body is adapted to the axial telescopic space.

[0014] Optionally, the damping element includes a turntable, which is located on both sides of the inner pressure plate along the axial direction of the outer pressure plate, and the turntable is fixedly connected to the outer pressure plate;

[0015] A limiting key and a limiting space for relative rotation of the limiting key are provided between the turntable and the outer pressure plate. The limiting key is fixedly connected to the mounting shaft. Two limiting posts are provided in the limiting space that rotate with the turntable. The limiting key and the limiting posts interfere with each other in the rotation direction so that the limiting key moves relative to the two limiting posts.

[0016] Optionally, the first connecting rod and the damping element have a second connection point, and the two second connection points are located at both ends of the same diameter on the rotation circle of the damping element;

[0017] When the two outriggers are parallel, the rotation circle of the damping element has a first tangent point with the tangent line parallel to the outrigger, and the rotation circle of the damping element has a second tangent point with the tangent line perpendicular to the outrigger. The second connection point moves within the range of the first tangent point and the second tangent point, and the movement angle of the second connection point is less than or equal to 90°.

[0018] Optionally, it also includes a locking mechanism, the locking mechanism including a second link disposed on the frame body and extending toward the legs on both sides, the second link being rotatably connected to the frame body through a bearing seat, the second link being provided with a first swing arm, the first swing arm being connected to the power end of the electric actuator;

[0019] The frame body and the two legs have two third connection points, and the line connecting the two third connection points is located in the same vertical plane as the axis of the second link;

[0020] The two ends of the second connecting rod extend into the two legs respectively. The two ends of the second connecting rod are provided with second swing arms. The second swing arms are hinged to a third connecting rod parallel to the legs. The two ends of the third connecting rod are hinged to third swing arms.

[0021] The two ends of the outrigger are provided with cam locking mechanisms, and the third swing arm is connected to the cam rod of the cam locking mechanism to drive the cam rod to extend or retract.

[0022] Optionally, the cam locking mechanism includes a cam seat, a rotating shaft rotatably mounted on the cam seat, the rotating shaft being fixedly connected to the third swing arm, a cam being fixedly mounted on the rotating shaft, and a cam rod located below and in contact with the cam.

[0023] A spring is fitted around the outer periphery of the cam rod, with both ends of the spring connected to the cam rod and the cam seat respectively. The spring provides an upward elastic force to the cam rod. The lower end of the cam rod protrudes from the cam seat and is provided with a foot.

[0024] The frame body is provided with a mounting bracket, the mounting bracket and the opening and closing mechanism are located on the same side, the support leg is provided with a front roller on the end extending away from the mounting bracket, the mounting bracket is provided with a rear roller, and the fixed end of the electric push rod is hinged to the mounting bracket;

[0025] The extended cam rod causes the foot to protrude downwards from the bottom of the front and rear rollers, and the retracted cam rod causes the foot to rise upwards to the upper side of the bottom of the front and rear rollers.

[0026] A rehabilitation training device, comprising the portable base described in any of the above claims.

[0027] The beneficial effects of this application are that the rotation of the damping component drives the movement of the first link, which in turn pushes or pulls the two outriggers to rotate, thereby opening and closing the two outriggers. After the outriggers are opened or closed, the damping force generated by the damping component and the mounting shaft prevents the outriggers from swaying unnecessarily, keeping them stably in their current state. This facilitates stable obstacle avoidance and improves stability during patient use. Furthermore, the damping component of this application can be manually or electrically driven. The damping force of the damping component is changed by the axial compression of the elastic damping body, allowing the patient to adjust it according to the actual application scenario. This ensures that sufficient damping force is available to keep the outriggers in their current state without affecting the adjustment of their opening and closing positions. Therefore, even when using a manual drive, the stability of the outriggers can be guaranteed. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the portable base structure provided in the embodiments of this application;

[0030] Figure 2 This is a schematic diagram of the main frame structure provided in the embodiments of this application;

[0031] Figure 3 This is a schematic diagram of the opening and closing mechanism provided in the embodiments of this application;

[0032] Figure 4 This is an exploded view of the opening and closing mechanism portion provided in an embodiment of this application;

[0033] Figure 5 This is a cross-sectional view of the damping element provided in an embodiment of this application;

[0034] Figure 6 This is a simplified kinematic diagram of the opening and closing mechanism provided in the embodiments of this application;

[0035] Figure 7 This is a schematic diagram of the initial state structure of the opening and closing mechanism provided in the embodiments of this application;

[0036] Figure 8 This is a schematic diagram of the opening and closing mechanism in the closed state provided in the embodiments of this application;

[0037] Figure 9 This is a schematic diagram of the opening and closing mechanism in the open state provided in the embodiments of this application;

[0038] Figure 10 This is a schematic diagram of the locking mechanism structure provided in the embodiments of this application;

[0039] Figure 11 This is a schematic diagram of the cam locking mechanism provided in the embodiments of this application;

[0040] Figure 12 This is a simplified kinematic diagram of the locking mechanism provided in the embodiments of this application;

[0041] Figure 13 This is a schematic diagram of the locking mechanism in the locking state provided in the embodiments of this application;

[0042] Figure 14 This is a schematic diagram of the unlocking state structure of the locking mechanism provided in the embodiment of this application.

[0043] In the diagram: 1-Frame body; 2-Outriggers; 3-Opening and closing mechanism; 4-Locking mechanism; 5-Mounting frame; 6-Rear roller; 7-Front roller; 8-Ground;

[0044] 11-Mounting shaft; 12-Swivel bearing;

[0045] 31-Damping component; 32-Drive unit; 33-First connecting rod; 34-Ling bearing; 35-Support seat; 311-Slip ring; 312-Inner pressure plate; 313-Elastic damping body; 314-Outer pressure plate; 315-Limit key; 316-Turntable; 317-Limit post; 318-Groove; 319-Positioning bead;

[0046] 41-Electric actuator; 42-Bearing housing; 43-Second link; 44-First swing arm; 45-Second swing arm; 46-Third link; 47-Third swing arm; 48-Cam locking mechanism; 481-Cam seat; 482-Rotating shaft; 483-Cam; 484-Cam rod; 485-Foot; 486-Spring;

[0047] A - First connection point; B - Second connection point; C - Third connection point; D - First tangent point; E - Second tangent point. Detailed Implementation

[0048] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0049] It should be noted that in this embodiment, the orientation or positional relationship indicated by terms such as "upper," "lower," "front," and "rear" is based on the orientation or positional relationship shown in the accompanying drawings. It is used only for the convenience of describing this application and for simplifying the description, and does 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, it should not be construed as a limitation of this application. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0051] like Figure 1As shown, in this embodiment, a portable base is provided. The base includes a frame body 1 and support legs 2 rotatably disposed on both sides of the frame body 1. The support legs 2 are rotatably connected to the frame body 1 via rotary bearings 12, thereby allowing the two support legs 2 to rotate in a horizontal plane. An opening and closing mechanism 3 is provided on the frame body 1, which connects the frame body 1 and the support legs 2. Under the support of the frame body 1, the action of the opening and closing mechanism 3 drives the two support legs 2 to rotate, thereby realizing the opening and closing of the two support legs 2.

[0052] Specifically, a mounting shaft 11 is provided on the frame body 1, and the opening and closing mechanism 3 includes a damping element 31 sleeved on the outer periphery of the mounting shaft 11 and rotatable relative to the mounting shaft 11. Please refer to... Figure 2 and Figure 3 The mounting shaft 11 can be set horizontally or vertically. When the mounting shaft 11 is horizontal, the damping element 31 can rotate in the vertical plane; when the mounting shaft 11 is vertical, the damping element 31 can rotate in the horizontal plane.

[0053] The damping element 31 contains an elastic damping body 313 and an axial expansion space for changing the axial dimension of the elastic damping body 313. The elastic damping body 313 is disposed within the axial expansion space and is located on the outer periphery of the mounting shaft 11. The inner ring of the elastic damping body 313 rubs against the mounting shaft 11 to generate damping force. The elastic damping body 313 can be made of a material with certain elasticity and wear resistance, such as a rubber sleeve. When the axial expansion space is compressed axially, the axial dimension of the elastic damping body 313 decreases, and the corresponding radial dimension of the elastic damping body 313 increases accordingly. This increases the compressive force between the inner ring of the elastic damping body 313 and the mounting shaft 11, thereby increasing the damping force generated by the damping element 31 and making it less prone to rotation. Conversely, when the axial expansion space is extended axially, the damping force generated by the damping element 31 decreases, and the damping element 31 rotates more easily.

[0054] The opening and closing mechanism 3 includes a first link 33, with both ends of the first link 33 rotatably connected to the damping member 31 and the support leg 2, respectively. It should be noted that since there are two support legs 2, there are also two first links 33. One end of each first link 33 is connected to the damping member 31, and the other end is connected to the support leg 2. Thus, the rotation of the damping member 31 drives the two first links 33 to move simultaneously, thereby driving the two support legs 2 to move.

[0055] During the rotation of the damping element 31, the position of the first connection point A between the first connecting rod 33 and the support leg 2 continuously changes. This change in position of the first connection point A causes the entire first connecting rod 33 to move closer to or further away from the rotation center of the damping element 31. That is, when the first connection point A is closer to the rotation center of the damping element 31, it causes the first connecting rod 33 to move closer to the rotation center of the damping element 31, thereby causing the end of the support leg 2 connected to the first connecting rod 33 to move inward. Meanwhile, the rotary bearing 12, which is rotatably connected to the support leg 2, is located in the middle position (specifically, it can be biased towards the side closer to the opening and closing mechanism 3, so that the ends of the two support legs 2 far from the opening and closing mechanism 3 have a larger opening and closing range), thereby causing the other end of the support leg 2 to move outward. Conversely, when the first connection point A is far away from the rotation center of the damping element 31, the end of the support leg 2 connected to the first connecting rod 33 moves outward, and the other end of the support leg 2 moves inward.

[0056] Furthermore, the two first links 33 are connected to the same damping element 31. Driven by the damping element 31, the first connection points A of the two first links 33 and the two outriggers 2 can simultaneously approach or move away from the rotation center of the damping element 31, thereby realizing the opening and closing of the outriggers 2.

[0057] The opening and closing mechanism 3 includes a drive unit 32, which is connected to the damping member 31. The drive unit 32 can drive the damping member 31 to rotate manually or electrically. Since this application has a damping member 31, regardless of whether the drive is manual or electric, the outrigger 2 can be kept in its current state under the action of the damping member 31, so as to achieve the effect that the outrigger 2 can be opened and closed and can be stably maintained.

[0058] It should be noted that the damping element 31 does not hinder its own rotation. That is, the damping force generated by the damping element 31 can keep the outrigger 2 stable, but it will not affect the direct rotation of the damping element 31 via the drive unit 32. Generally, when the outrigger 2 needs to maintain its current open / closed state, if the outrigger 2 collides with an obstacle, the force exerted by the obstacle on the outrigger 2 is usually an instantaneous force and cannot be sustained. Furthermore, most of this collision force is offset by the rolling friction between the outrigger 2 and the ground 8, as well as the interaction force between the two outriggers. Only a very small portion is transmitted to the damping element 31. Therefore, the damping element 31 can completely maintain the stability of the outrigger 2. The force exerted by the drive unit 32 on the damping element 31 is usually a stable and continuous external force, thus continuously driving the damping element 31 to rotate, thereby realizing the opening and closing action of the two outriggers 2.

[0059] Furthermore, since the damping force generated by the damping member 31 of this application is adjustable, the damping force of the damping member 31 can be reduced when the driving part 32 drives the damping member 31 to rotate, so as to facilitate the control of the opening and closing of the outrigger 2; after the outrigger 2 is opened or closed, the damping force of the damping member 31 can be increased, so as to facilitate the control of the outrigger 2 to remain in the current state.

[0060] In summary, this application utilizes the rotation of the damping element 31 to drive the first connecting rod 33, which in turn pushes or pulls the two outriggers 2 to rotate, thereby opening and closing the two outriggers 2. After the outriggers 2 are opened or closed, the damping force generated by the damping element 31 and the mounting shaft 11 prevents the outriggers 2 from swaying unnecessarily, ensuring they remain stably in their current state. This facilitates stable obstacle avoidance and improves stability during patient use. Furthermore, the damping element 31 can be manually or electrically driven. The damping force of the damping element 31 is altered by the axial compression of the elastic damping body 313, allowing the patient to adjust it according to the actual application scenario. This ensures sufficient damping force to maintain the outriggers 2 in their current state without affecting the adjustment of their opening and closing positions. Therefore, even with manual drive, the stability of the outriggers 2 can be guaranteed.

[0061] In some embodiments, the drive unit 32 can be a drive handle or a drive motor. The output shaft of the drive handle and the drive motor can be fixedly connected to the damping member 31. The axis of the drive unit 32 coincides with the axis of the damping member 31, thereby driving the damping member 31 to rotate. In other embodiments, the drive handle or the drive motor can also be connected to the damping member 31 through transmission, that is, the axis of the drive unit 32 is parallel to the axis of the damping member 31. The drive unit 32 and the damping member 31 are connected by a worm gear transmission method. The drive unit 32 acts as a worm, and the damping member 31 acts as a worm wheel. The rotation of the worm can drive the worm wheel to rotate, but the worm wheel cannot drive the worm to rotate in the opposite direction. This can achieve self-locking between the drive unit 32 and the damping member 31, that is, the damping member 31 can only be driven to rotate by the drive unit 32, and the damping member 31 cannot drive the drive unit 32 to rotate in the opposite direction. This can further stabilize the current open and closed state of the support leg 2.

[0062] The damping component 31 includes an inner pressure plate 312 and an outer pressure plate 314 sleeved on the outer periphery of the mounting shaft 11. The inner pressure plate 312 and the outer pressure plate 314 are fastened together to form the aforementioned axial expansion and contraction space. The elastic damping body 313 is installed in the axial expansion and contraction space, and the three components are assembled together. The inner pressure plate 312 is close to the step of the mounting shaft 11, and a slip ring 311 is provided between the inner pressure plate 312 and the step to allow for smooth relative rotation between the two.

[0063] The inner pressure plate 312 and the outer pressure plate 314 have a clearance in the axial direction to allow relative movement between them. The inner pressure plate 312 and the outer pressure plate 314 are connected by adjusting screws, and the width of the clearance can be adjusted. By adjusting the relative position of the inner pressure plate 312 and the outer pressure plate 314 in the axial direction, the axial expansion space applies pressure to the elastic damping body 313, causing the elastic damping body 313 to generate a deformation force. Its inner ring wraps around the mounting shaft 11 through the force released by deformation, thereby generating a variable damping force. When the clearance between the inner pressure plate 312 and the outer pressure plate 314 is close to fitting, the elastic damping body 313 deforms to its maximum, and the damping force is also at its maximum. The amount of compression of the elastic damping body 313 can be adjusted by screws to better adjust the magnitude of the damping force.

[0064] To ensure that the force released by the axial deformation of the elastic damping body 313 can be better applied to the mounting shaft 11, the axial expansion space can be configured with a cross-section that is small at both ends and gradually increases in size from both ends towards the middle. The outer contour of the elastic damping body 313 is adapted to the structure of the axial expansion space. Please refer to [reference needed]. Figure 5 That is, the elastic damping body 313 has small dimensions at both ends and large dimensions in the middle. After axial compression, the elastic damping body 313 can better release the deformation force in the radial direction, so that the force can be more easily applied to the mounting shaft 11.

[0065] The damping component 31 also includes a turntable 316, which is located on both sides of the outer pressure plate 314 along the axial direction, and the turntable 316 and the outer pressure plate 314 can be fixedly connected by screws. The driving part 32 can be disposed on the turntable 316, or the driving part 32 can be rotatably connected to the turntable 316, thereby driving the entire damping component 31 to rotate.

[0066] A limit key 315 and a limit space for accommodating the limit key 315 are provided between the turntable 316 and the outer pressure plate 314. The limit key 315 can rotate relative to the limit space. A slot is provided at the end of the mounting shaft 11. The limit key 315 is engaged with the slot and locked onto the mounting shaft 11 by screws.

[0067] The aforementioned limiting space is equipped with two limiting posts 317 that rotate with the turntable 316. Please refer to... Figure 4 The limiting post 317 can be set on the turntable 316 or the outer pressure plate 314. The limiting key 315 interferes with the limiting post 317 in the rotation direction, thereby causing the limiting key 315 to move relative to the two limiting posts 317. When the turntable 316 is rotated, the position of the limiting key 315 remains constant. After the turntable 316 rotates to the left and right at a certain angle, the limiting key 315 will touch the limiting posts 317 on both sides, and the left and right contact points are the limit positions of the left and right rotation of the turntable 316. In this embodiment, the rotation of the turntable 316 represents the rotation of the damping element 31.

[0068] Furthermore, the two ends of the first connecting rod 33 are connected to the support leg 2 and the damping element 31 respectively through the spherical bearing 34. Specifically, the two ends of the first connecting rod 33 are connected to the turntable 316 and the support seat 35 on the support leg 2 through the spherical bearing 34. When the turntable 316 rotates, it causes the spherical bearing 34 and the first connecting rod 33 to produce changes in angle and position. The spherical bearing 34 can withstand radial and axial deformation well, so that the first connecting rod 33 can better transmit and connect the turntable 316 and the support leg 2.

[0069] A positioning bead 319 is provided on the step of the mounting shaft 11, and a groove 318 is provided on the end face of the inner pressure plate 312 to mate with the positioning bead 319. The function of the positioning bead 319 is that the front lifting ball can mate with the groove 318, the ball sinks when external force is applied, and rises when spring force is applied. The positioning bead 319 can be a standard part or a customized part, and no further restrictions are imposed here.

[0070] When the two legs 2 are in a parallel state, the ball of the positioning bead 319 is stuck in the groove 318; when the ball moves in and out of the groove 318, there will be a slight sticking sensation. This sensation serves as the standard for the damping element 31 to return to its original position and is also the key point for the two legs 2 to be relatively parallel.

[0071] Please refer to Figure 6 The first link 33 has a first connection point A with the outrigger 2, and a second connection point B with the damper 31. When the first link 33 is equipped with spherical bearings 34 at both ends, the first connection point A and the second connection point B are the rotation centers of the corresponding spherical bearings 34. The two second connection points B are located at the two ends of the same diameter of the rotation circle of the damper 31, so that the movement directions of the two second connection points B are completely opposite, thereby enabling the two first links 33 to synchronously drive the corresponding outrigger 2 away from or towards the rotation center of the damper 31.

[0072] With the two outriggers 2 parallel, the rotation circle of the damper 31 has a first tangent point D with the tangent line parallel to the stop, and a second tangent point E with the tangent line perpendicular to the outrigger 2. Please refer to [reference needed]. Figure 6 The second connection point B moves within the range of the first tangent point D and the second tangent point E, and the angle of movement of the second connection point B is less than or equal to 90°. This application describes the drive handle as the drive unit 32. The rotation of the drive handle can drive the turntable 316 to rotate. The first connecting rods 33 on both sides of the turntable 316 have a 45° angle installation requirement, that is, the line connecting one of the second connection points B and the rotation center of the damping member 31 forms a 45° angle with the drive handle, and the line connecting the other second connection point B and the rotation center of the damping member 31 forms a 135° angle with the drive handle.

[0073] When the drive handle is swung to the right, the second connection point B moves toward the second tangent point E, and the connecting rod pulls the first connection point A inward, bringing it closer to the rotation center of the damper 31, thereby driving the two outriggers 2 to open outward. When the drive handle is swung to the left, the second connection point B moves toward the first tangent point D, and the connecting rod pushes the first connection point A outward, moving it away from the rotation center of the damper 31, thereby driving the two outriggers 2 to narrow inward.

[0074] Furthermore, when the second connection point B rotates to the first tangent point D, the first connection point A is furthest from the rotation center of the damping element 31, at which point the retraction effect of the two outriggers 2 reaches its maximum; conversely, when the second connection point B rotates to the first tangent point D, the first connection point A is closest to the rotation center of the damping element 31, at which point the opening effect of the two outriggers 2 reaches its maximum.

[0075] The rotation angle of the drive handle is not subject to many restrictions, but it is necessary to ensure that the rotation angle to the left and right is less than or equal to 45°, so that the second connection point B only moves between the first tangent point D and the second tangent point E.

[0076] Please refer to Figure 7 , Figure 7 The drive handle is in the middle position and perpendicular to the ground 8. The two support legs 2 are parallel. The second connection point B is located at the midpoint of the arc between the first tangent point D and the second tangent point E. The line connecting the two second connection points B forms a 45° angle with the drive handle. At this time, the positioning bead 319 mentioned above corresponds to the groove 318 of the inner pressure plate 312, and the two are positioned and concentric.

[0077] Please refer to Figure 8 , Figure 8 The drive handle is rotated to the left to its maximum position, forming a certain angle with the ground 8; the second connection point B rotates to the first tangent point D, the front ends of the two support legs 2 retract inward, the rear ends open outward, and the two connecting rods are nearly parallel to the ground 8. At this time, the positioning bead 319 mentioned above disengages from the groove 318 of the inner pressure plate 312, and the positioning bead 319 abuts against the end face of the inner pressure plate 312; at the same time, the damping force provided by the damping element 31 keeps the two support legs 2 in their current state, and the state of the two support legs 2 is not affected when the base moves back and forth.

[0078] Please refer to Figure 9 , Figure 9The drive handle is rotated to its maximum position to the right, forming a certain angle with the ground 8; the second connection point B rotates to the first tangent point D, and the line connecting the two second connection points B is nearly perpendicular to the ground 8. At this time, the positioning bead 319 mentioned above disengages from the groove 318 of the inner pressure plate 312, and the positioning bead 319 abuts against the end face of the inner pressure plate 312; at the same time, the damping force provided by the damping element 31 keeps the two support legs 2 in their current state, and the state of the two support legs 2 is not affected when the base moves back and forth.

[0079] The portable base also includes a locking mechanism 4, please refer to... Figure 10 The locking mechanism 4 includes a second link 43 located on the frame body 1 and extending toward the two side legs 2. The second link 43 is rotatably connected to the frame body 1 through a bearing seat 42. A first swing arm 44 is provided on the second link 43, and the first swing arm 44 is connected to the power end of the electric push rod 41. In addition, the first swing arm 44 and the second link 43 can be designed separately and are stably connected by a coupling. The torsional force of the first swing arm 44 is transmitted to the second link 43 through the coupling.

[0080] Please refer to Figure 6 The frame body 1 and the two legs 2 each have two third connection points C. The third connection points are the rotation centers of the rotary bearing 12, and the line connecting the two third connection points C and the axis of the second link 43 are located in the same vertical plane. This ensures that the distance between the two third connection points C does not change when the two legs 2 are opened and closed, and the distance between the two legs 2 corresponding to the two ends of the second link 43 does not change. Therefore, the arrangement of the second link 43 is not affected by the opening and closing of the two legs 2.

[0081] The second connecting rod 43 has two legs 2 extending into it at both ends. The legs 2 have slotted holes on their sides for the second connecting rod 43 to extend into. The slotted holes prevent the legs 2 from affecting the connecting rod when they open or close. The second connecting rod 43 has two swing arms 45 at both ends. The second swing arms 45 are hinged to a third connecting rod 46 parallel to the legs 2. The third connecting rod 46 has three swing arms 47 hinged to its two ends.

[0082] Please refer to Figure 12 The thrust of the electric actuator 41 acts on the first swing arm 44, and the first swing arm 44 transmits the torsional force to the second link 43, causing the second link 43 to rotate; the torsional force of the second link 43 is transmitted to the second swing arm 45, causing the second swing arm 45 to swing; the torsional force of the second swing arm 45 is transmitted to the third link 46, causing the third link 46 to swing axially; the torsional force of the third link 46 is transmitted to the third swing arm 47, enabling the third swing arm 47 to achieve the same swinging effect as the second swing arm 45.

[0083] Cam locking mechanisms 48 are arranged at both ends of the support leg 2. The third swing arm 47 is connected to the cam rod 484 of the cam locking mechanism 48, thereby converting the swing of the third swing arm 47 into the axial movement of the cam rod 484 to realize the extension or retraction of the cam rod 484. At the same time, the third swing arms 47 at both ends of the third connecting rod 46 can swing synchronously, thereby driving the cam rods 484 at both ends of the same support leg 2 to extend or retract synchronously.

[0084] Among them, the cam locking mechanisms 48 on the two support legs 2 are arranged in a mirror image, and the corresponding linkage mechanisms that drive the cam locking mechanisms 48 are also arranged in a mirror image, so that the multiple cam locking mechanisms 48 on the two support legs 2 can move synchronously.

[0085] Please refer to Figure 11 The cam locking mechanism 48 includes a cam seat 481, on which a rotating shaft 482 is rotatably mounted. The rotating shaft 482 is fixedly connected to the third swing arm 47, transmitting torsional force so that the rotation of the third swing arm 47 can drive the rotating shaft 482 to rotate. A cam 483 is fixedly mounted on the rotating shaft 482, and a cam rod 484 is located below and in contact with the cam 483. The specific form of the cam 483 can refer to the prior art. The eccentric structure of the cam 483 causes the cam rod 484 to move downward. The outer periphery of the cam rod 484... A spring 486 is fitted, with its two ends connected to a cam rod 484 and a cam seat 481, respectively. The spring 486 provides an upward elastic force to the cam rod 484. After the torsional force of the third swing arm 47 disappears, the cam rod 484 moves automatically upward under the action of the spring 486. The lower end of the cam rod 484 protrudes from the cam seat 481 and is provided with a foot 485. When the cam rod 484 extends downward, the foot 485 can contact the ground 8; when it retracts upward, the foot 485 can maintain a certain distance from the ground 8.

[0086] A mounting bracket 5 is provided on the frame body 1. The mounting bracket 5 and the locking mechanism are located on the same side. The support leg 2 is provided with a front roller 7 at the end extending away from the mounting bracket 5. The mounting bracket 5 is provided with a rear roller 6. The fixed end of the electric push rod 41 is hinged to the mounting bracket 5.

[0087] When the electric actuator 41 extends or retracts, the first swing arm 44 swings at a certain angle, and the second connecting rod 43, which is fixedly connected to the first swing arm 44, rotates at the same time. The rotation of the second connecting rod 43 is transmitted to the second swing arms 45 at both ends through a coupling. The second swing arms 45 receive the rotational force and transmit it to the third connecting rod 46. The third swing arms 47 at both ends of the third connecting rod 46 receive the swinging force and transmit it to the cam locking mechanism 48, thereby realizing the extension and retraction of the cam rod 484.

[0088] Please refer to Figure 13When the electric actuator 41 is in the retracted state, the locking mechanism 4 will not generate a torsional force on the cam locking mechanism 48. At this time, the cam rod 484 retracts upward under the action of the spring 486. The retracted cam rod 484 drives the foot 485 to rise to the upper side of the bottom of the front roller 77 and the rear roller 6, so that the foot 485 is a certain height away from the ground 8. The base is in the unlocked state and can be easily pushed.

[0089] Please refer to Figure 14 When the electric actuator 41 is in the extended state, the locking mechanism 4 will generate a torsional force on the cam locking mechanism 48 to drive the cam rod 484 to extend downwards synchronously. The extended cam rod 484 drives the foot 485 to protrude downwards from the bottom of the front roller 7 and the rear roller 6, so that the foot 485 contacts the ground 8 and raises the base to a certain height. The base is in the locked state and cannot be pushed or is very difficult to push.

[0090] This application also provides a rehabilitation training device, which is installed on the aforementioned portable base, making it convenient to move the entire device to the required location.

[0091] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0092] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A portable base, comprising a frame body (1) and rotatable legs (2) on both sides thereof, characterized in that, It also includes an opening and closing mechanism (3) connecting the frame body (1) and the support leg (2), wherein the frame body (1) is provided with a mounting shaft (11), and the opening and closing mechanism (3) includes: The damping element (31) is sleeved on the outer periphery of the mounting shaft (11) and can rotate relative to it. The damping element (31) is provided with an elastic damping body (313) and an axial expansion space for changing the axial dimension of the elastic damping body (313). The inner ring of the elastic damping body (313) rubs against the mounting shaft (11) to generate damping force. The first link (33) is rotatably connected at both ends to the damping member (31) and the support leg (2). The rotating damping member (31) is used to drive the first connection point (A) between the first link (33) and the support leg (2) to move closer to or away from the rotation center of the damping member (31). A drive unit (32) is connected to the damping member (31), and the drive unit (32) drives the damping member (31) to rotate manually or electrically.

2. The portable base according to claim 1, characterized in that, The drive unit (32) includes a drive handle or drive motor fixedly disposed relative to the damping member (31), and the axis of the drive unit (32) coincides with the axis of the damping member (31).

3. The portable base according to claim 1, characterized in that, The drive unit (32) includes a drive handle or drive motor that is connected to the damping member (31) in a transmission manner. The axis of the drive unit (32) is parallel to the axis of the damping member (31). The drive unit (32) and the damping member (31) are connected by a worm gear transmission method.

4. The portable base according to claim 1, characterized in that, The damping element (31) includes an inner pressure plate (312) and an outer pressure plate (314) sleeved on the outer periphery of the mounting shaft (11). The inner pressure plate (312) and the outer pressure plate (314) are fastened together to form the axial expansion space. The inner pressure plate (312) and the outer pressure plate (314) have a gap in the axial direction for relative movement between them. The inner pressure plate (312) and the outer pressure plate (314) are connected by adjusting screws and the width of the gap is adjusted.

5. The portable base according to claim 1, characterized in that, The axial expansion space has a cross-section with small dimensions at both ends and gradually increasing dimensions from both ends to the middle. The outer contour of the elastic damping body (313) is adapted to the axial expansion space.

6. The portable base according to claim 4, characterized in that, The damping component (31) includes a turntable (316), the turntable (316) and the inner pressure plate (312) are located on opposite sides of the outer pressure plate (314) in the axial direction, and the turntable (316) and the outer pressure plate (314) are fixedly connected. A limit key (315) and a limiting space for relative rotation of the limit key (315) are provided between the turntable (316) and the external pressure plate (314). The limit key (315) is fixedly connected to the mounting shaft (11). Two limit posts (317) are provided in the limiting space that rotate with the turntable (316). The limit key (315) and the limit posts (317) interfere with each other in the rotation direction so that the limit key (315) moves relative to the two limit posts (317).

7. The portable base according to claim 1, characterized in that, The first connecting rod (33) and the damping member (31) have a second connection point (B), and the two second connection points (B) are located at both ends of the same diameter on the rotation circle of the damping member (31); When the two legs (2) are parallel, the rotation circle of the damping member (31) has a first tangent point (D) with the tangent line parallel to the leg (2), and the rotation circle of the damping member (31) has a second tangent point (E) with the tangent line perpendicular to the leg (2). The second connection point (B) moves within the range of the first tangent point (D) and the second tangent point (E), and the movement angle of the second connection point (B) is less than or equal to 90°.

8. The portable base according to claim 1, characterized in that, It also includes a locking mechanism (4), which includes a second link (43) located on the frame body (1) and extending toward the legs (2) on both sides. The second link (43) is rotatably connected to the frame body (1) through a bearing seat (42). A first swing arm (44) is provided on the second link (43), and the first swing arm (44) is connected to the power end of the electric push rod (41). The frame body (1) and the two legs (2) have two third connection points (C), and the line connecting the two third connection points (C) and the axis of the second link (43) are located in the same vertical plane; The two ends of the second connecting rod (43) extend into the two legs (2) respectively. The two ends of the second connecting rod (43) are provided with second swing arms (45). The second swing arms (45) are hinged to a third connecting rod (46) parallel to the legs (2). The two ends of the third connecting rod (46) are hinged to a third swing arm (47). The two ends of the support leg (2) are provided with cam locking mechanisms (48), and the third swing arm (47) is connected to the cam rod (484) of the cam locking mechanism (48) to drive the cam rod (484) to extend or retract.

9. The portable base according to claim 8, characterized in that, The cam locking mechanism (48) includes a cam seat (481), a rotating shaft (482) is rotatably mounted on the cam seat (481), the rotating shaft (482) is fixedly connected to the third swing arm (47), a cam (483) is fixedly mounted on the rotating shaft (482), and the cam rod (484) is located on the lower side of the cam (483) and in contact with it; A spring (486) is sleeved on the outer periphery of the cam rod (484). The two ends of the spring (486) are connected to the cam rod (484) and the cam seat (481) respectively. The spring (486) is used to provide an upward elastic force to the cam rod (484). The lower end of the cam rod (484) protrudes from the cam seat (481) and is provided with a foot (485). The frame body (1) is provided with a mounting bracket (5), the mounting bracket (5) and the opening and closing mechanism (3) are located on the same side, the support leg (2) is provided with a front roller (7) at the end of the side extending away from the mounting bracket (5), the mounting bracket (5) is provided with a rear roller (6), and the fixed end of the electric push rod (41) is hinged to the mounting bracket (5). The extended cam rod (484) causes the foot (485) to protrude downward from the bottom end of the front roller (7) and the rear roller (6), and the retracted cam rod (484) causes the foot (485) to rise upward to the upper side of the bottom end of the front roller (7) and the rear roller (6).

10. A rehabilitation training device, characterized in that, Includes the portable base as described in any one of claims 1-9.

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