Limb balance training device

Abstract

The utility model discloses a limb balance training device which comprises a base, a supporting part, a balance table, a plurality of springs, a guide ring, a transmission part and a driving assembly, and the base is provided with a first seat surface and a second seat surface which are oppositely arranged in the first direction; the supporting part is fixed on one side of the first seat surface; the balancing table is rotationally connected to one side, deviating from the base, of the supporting part; the springs are arranged on the periphery of the supporting part at intervals. The guide ring is rotationally connected to one side of the first seat surface and has a degree of freedom of rotating around a first direction, one side, deviating from the base, of the guide ring is a guide surface, and the distance between the guide surface and the first seat surface has a variation range; the transmission part is arranged between the base and the balancing table and abuts against the guide face and the balancing table. The driving assembly is arranged on one side of the first seat face and connected with the guide ring. The balance table can actively swing, a user needs to continuously change the posture to adjust the gravity center position, and the training effect is better.

Description

Technical Field

[0001] The present application relates to the technical field of training devices, and in particular to a limb balance training device. Background Art

[0002] Balance training is a rehabilitation method aimed at restoring or improving the body's balance ability. It is suitable for people with poor balance due to central nervous system diseases or those who are born with poor balance ability. The limb balance training device is a device that forces the user to control the center of gravity during balance training to achieve the purpose of training balance ability.

[0003] Traditional balance training devices are equipped with a platform for the user to stand on. The platform has a certain degree of freedom to tilt. The user stands on the platform to adjust the center of gravity to maintain balance. However, since the user's posture on the platform generally remains unchanged, the platform can only tilt passively, resulting in poor training effect. Utility Model Content

[0004] The main purpose of the present application is to provide a limb balance training device, which aims to solve the problem that the user's posture when standing on the platform generally remains unchanged, the platform can only be passively tilted, and the training effect is poor.

[0005] To achieve the above-mentioned purpose, the present application provides a limb balance training device, which includes a base, a support part, a balance platform, multiple springs, a guide ring, a transmission part and a drive assembly, wherein the base has a first seat surface and a second seat surface arranged opposite to each other in a first direction, and the first direction is the same as the thickness direction of the base; the support part is fixed to the side of the first seat surface facing away from the second seat surface; the balance platform is rotatably connected to the side of the support part facing away from the base and has the freedom to swing in the first direction; multiple springs are arranged at intervals on the periphery of the support part, and each spring is connected between the base and the balance platform; the guide ring is rotatably connected to the side of the first seat surface facing away from the second seat surface and has the freedom to rotate around the first direction, the side of the guide ring facing away from the base is a guide surface, and the distance between the guide surface and the first seat surface has a variable range; the transmission part is arranged between the base and the balance platform and respectively contacts the guide surface and the balance platform, and the transmission part has the freedom to move along the first direction; the drive assembly is arranged on the side of the first seat surface facing away from the second seat surface and is connected to the guide ring, and the drive assembly provides a rotational driving force for the guide ring.

[0006] Optionally, the limb balance training device also includes a connecting ball and a mounting seat, wherein the connecting ball is fixed to the side of the support part facing the balance platform; the mounting seat is fixed to the side of the balance platform facing the connecting ball, and the mounting seat is provided with a mounting groove that rotates with the connecting ball.

[0007] Optionally, the guide surface includes m groups of sub-guide surfaces connected end to end, where m is a positive integer.

[0008] Optionally, in the first direction, the maximum distance between the plane on which the side of the balancing platform facing the guide ring is located and the sub-guide surface is a, the length of the transmission part is b, and a=b.

[0009] Optionally, the included angle between the balancing platform and the base is c, and 0°≤c≤30°.

[0010] Optionally, the transmission part includes a telescopic rod, a connecting rod, a movable rod and a roller, wherein the telescopic rod extends along a first direction; the connecting rod is fixed to the end of the telescopic rod away from the base; the movable rod is located between the guide surface and the balancing platform and is fixed to the connecting rod, and the two ends of the movable rod extend to the balancing platform and the guide surface respectively; the two rollers are arranged at the two ends of the movable rod opposite to each other and respectively abut the balancing platform and the guide surface, and the rollers have the freedom to rotate around a second direction, and the second direction is the same as the radial direction of the guide ring and is perpendicular to the first direction.

[0011] Optionally, the drive assembly includes a mounting frame, a motor and a gear, wherein the mounting frame is fixed to the side of the first seat surface facing away from the second seat surface; the axial direction of the motor output shaft is the same as the first direction and is fixed to the mounting frame; the gear is sleeved on the outer periphery of the motor output shaft, and the gear is engaged with the guide ring.

[0012] Optionally, each spring is located on the inner circumference of the guide ring; the limb balance training device also includes a rotating ring, which is rotatably connected to the side of the first seat surface away from the second seat surface and has the freedom to rotate around its own axis, and the axial direction of the rotating ring is the same as the axial direction of the guide ring and is sleeved on the outer periphery of the guide ring; wherein, the telescopic rod is fixed to the side of the rotating ring away from the base; the gear is located between the rotating ring and the guide ring and meshes with the rotating ring and the guide ring respectively.

[0013] Optionally, the limb balance training device further includes side panels, a top panel and armrests, wherein the side panels are arranged around the periphery of the rotating ring and are fixed to the base; the top panel is fixed to the side of the side panel facing away from the base and is provided with a through hole with a depth direction being a first direction, the balance platform is located at the through hole, and the orthographic projection of the through hole on the first seat surface covers the orthographic projection of the balance platform on the first seat surface; the armrests are fixed to the side of the top panel facing away from the side panel and are arranged around the periphery of the through hole.

[0014] Optionally, there is a gap between the balance platform and the through hole; the limb balance training device further comprises a flexible cloth, which seals the gap between the through hole and the balance platform; wherein the flexible cloth is made of elastic fabric.

[0015] An embodiment of the present application proposes a limb balance training device, in which a balance platform is rotatably connected to a support part, and multiple springs are arranged between the balance platform and the base. When a user stands on the balance platform, the driving component is started, and the driving component drives the guide ring to rotate in a first direction. When the guide ring rotates, the transmission part conflicts with different positions of the guide surface, and the guide surface pushes the transmission part to perform reciprocating motion in the first direction. The transmission part cooperates with the spring to push the balance platform to actively swing. The user needs to constantly change his posture to adjust the center of gravity position, so that the training effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the overall structure of a limb balance training device provided in an embodiment of the present application;

[0017] Figure 2 for Figure 1 A top cross-sectional view of an embodiment;

[0018] Figure 3 A schematic structural diagram of the base of a limb balance training device provided in an embodiment of the present application;

[0019] Figure 4 for Figure 3 Schematic diagram of the structural disassembly of the embodiment.

[0020] In the figure: 1. Base; 11. Side panel; 12. Top panel; 121. Through hole; 13. Armrest; 14. Flexible cloth; 2. Support part; 21. Connecting ball; 3. Balance platform; 31. Mounting seat; 4. Spring; 5. Guide ring; 51. Guide surface; 6. Transmission part; 61. Telescopic rod; 62. Connecting rod; 63. Moving rod; 64. Roller; 7. Drive assembly; 71. Mounting frame; 72. Motor; 73. Gear; 8. Rotating ring.

[0021] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0025] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0026] refer to Figures 1 to 4 , it should be understood that Figure 4 The connections between the components should be like Figure 3 As compact as in the example, this is just an example. Figure 4The middle part of the components is disassembled and displayed for easy understanding. The embodiment of the present application provides a limb balance training device, which may include a base 1, a support part 2, a balance platform 3, a plurality of springs 4, a guide ring 5, a transmission part 6 and a drive assembly 7, wherein the base 1 has a first seat surface and a second seat surface arranged opposite to each other in a first direction, and the first direction is the same as the thickness direction of the base 1; the support part 2 is fixed to the side of the first seat surface away from the second seat surface; the balance platform 3 is rotatably connected to the side of the support part 2 away from the base 1 and has the freedom to swing in the first direction; a plurality of springs 4 are arranged at intervals on the support part 2, each spring 4 is connected between the base 1 and the balancing platform 3; the guide ring 5 is rotatably connected to the side of the first seat away from the second seat and has the freedom to rotate around the first direction, the side of the guide ring 5 away from the base 1 is the guide surface 51, and the distance between the guide surface 51 and the first seat has a variable range; the transmission part 6 is arranged between the base 1 and the balancing platform 3 and respectively contacts the guide surface 51 and the balancing platform 3, and the transmission part 6 has the freedom to move along the first direction; the driving component 7 is arranged on the side of the first seat away from the second seat and connected to the guide ring 5, and the driving component 7 provides a rotational driving force for the guide ring 5.

[0027] A limb balance training device proposed in an embodiment of the present application, wherein a balance platform 3 is rotatably connected to a support portion 2, and a plurality of springs 4 are arranged between the balance platform 3 and a base 1. When a user stands on the balance platform 3, the driving component 7 is started, and the driving component 7 drives the guide ring 5 to rotate around a first direction. When the guide ring 5 rotates, the transmission part 6 conflicts with different positions of the guide surface 51, and the guide surface 51 pushes the transmission part 6 to perform reciprocating motion in the first direction. The transmission part 6 cooperates with the spring 4 to push the balance platform 3 to actively swing. The user needs to constantly change his posture to adjust the center of gravity position, and the training effect is better.

[0028] Specifically, such as Figure 3 As shown, the first direction is the X direction. When the guide ring 5 rotates, the guide surface 51 contacts the transmission part 6 at different positions on the circumference of the guide ring 5. The distance between the area where the guide surface 51 contacts the transmission part 6 and the first seat surface can be recorded as d. d is within a range of variation. min is the minimum value within the range of variation, d max is the maximum value within the variation range, the guide ring 5 rotates to drive the transmission part 6 to reciprocate along the first direction X; it should be understood that at this time the maximum reciprocating stroke of the transmission part 6 in the first direction X is d max Subtract d min value.

[0029] It should be noted that the d value corresponding to the interference position between the transmission part 6 and the guide surface 51 is d min When the balancing platform 3 is in the initial position, the d value corresponding to the contact position between the transmission part 6 and the guide surface 51 changes from dmin Change to d max When the balancing platform 3 is away from the side of the transmission part 6 and tilted toward the first seat surface; when the d value corresponding to the interference position between the transmission part 6 and the guide surface 51 changes from d max Change to d min When the guide ring 5 rotates around the first direction X, the balance platform 3 can tilt and swing in the first direction X. The user needs to actively change his posture to adjust the center of gravity position, and the training effect is better.

[0030] refer to Figure 4 In an exemplary embodiment, the limb balance training device may further include a connecting ball 21 and a mounting seat 31, wherein the connecting ball 21 is fixed to the side of the support part 2 facing the balance platform 3; the mounting seat 31 is fixed to the side of the balance platform 3 facing the connecting ball 21, and the mounting seat 31 is provided with a mounting groove that rotates with the connecting ball 21.

[0031] Specifically, after the mounting seat 31 rotates and cooperates with the connecting ball 21 through the mounting groove, the mounting seat 31 has the freedom to rotate around the center point of the connecting ball 21. The balancing platform 3 is fixed to the mounting seat 31, and the balancing platform 3 has the freedom to rotate around the center point of the connecting ball 21. In this way, when the guide ring 5 rotates, the transmission part 6 cooperates with the spring 4 to drive the balancing platform 3 to swing in the first direction X around the center point of the connecting ball 21.

[0032] refer to Figure 3 and Figure 4 In an exemplary embodiment, the guide surface 51 may include m groups of sub-guide surfaces connected end to end, where m is a positive integer.

[0033] Specifically, the starting end and the ending end of the sub-guide surface have the same height and are the highest or lowest point. The sub-guide surface can be understood as a U-shape or an inverted U-shape. The height here refers to the distance between the sub-guide surface and the first seat surface in the first direction. Among them, the larger the value of m, the more times the guide ring 5 rotates one circle, the more times the balance platform 3 tilts and then returns to the initial position, and the higher the balance force requirement for the user. The specific setting can be selected according to actual conditions.

[0034] In the preferred embodiment provided by the present application, four sub-guide surfaces are provided, i.e., m=4. The guide ring 5 rotates one circle, and the transmission part 6 reciprocates up and down four times. That is, the balance platform 3 tilts from the initial position and then returns to the initial position. This is repeated four times, prompting the user to actively change the posture to adjust the center of gravity position, and the training effect is better.

[0035] refer to Figure 3 and Figure 4In an exemplary embodiment, in the first direction X, the maximum distance between the plane of the side of the balancing platform 3 facing the guide ring 5 and the sub-guide surface is a, the length of the transmission part 6 is b, and a=b.

[0036] Specifically, if a=b, then when the balancing platform 3 is in the initial position, the balancing platform 3 is horizontal; in other words, if a=b and the d value corresponding to the interference position between the transmission part 6 and the guide surface 51 is d min When the user starts or ends training, the first seat surface or the second seat surface is parallel to the horizontal plane. In this way, the balance platform 3 remains in the initial position, and the user can more easily move onto the balance platform 3 or move out of the balance platform 3, making it more convenient to use.

[0037] In an exemplary embodiment, the included angle between the balancing platform 3 and the base 1 is c, and 0°≤c≤30°.

[0038] Specifically, the angle range between the balance platform 3 and the base 1 can be controlled from the connecting ball 21 and the mounting seat 31. For example, when c=30°, the mounting seat 31 conflicts with the support part 2, and the mounting seat 31 cannot continue to rotate around the center point of the connecting ball 21 to c>30°, preventing the balance platform 3 from tilting too much and causing danger when the user uses it. The specific value of c can be selected according to actual conditions. For example, if the limb balance training device is mainly aimed at people doing rehabilitation training, the value of c can be set smaller to make the training safer; if the limb balance training device is mainly aimed at people with better balance ability, the value of c can be set larger to achieve better training effect.

[0039] refer to Figure 4 In an exemplary embodiment, the transmission part 6 may include a telescopic rod 61, a connecting rod 62, a mobile rod 63 and a roller 64, wherein the telescopic rod 61 extends along the first direction X; the connecting rod 62 is fixed to the end of the telescopic rod 61 away from the base 1; the mobile rod 63 is located between the guide surface 51 and the balancing platform 3 and is fixed to the connecting rod 62, and the two ends of the mobile rod 63 extend to the balancing platform 3 and the guide surface 51 respectively; the two rollers 64 are arranged at the two ends of the mobile rod 63 opposite to each other and respectively contact the balancing platform 3 and the guide surface 51, and the rollers 64 have the freedom to rotate around a second direction, and the second direction is the same as the radial direction of the guide ring 5 and is perpendicular to the first direction X.

[0040] Specifically, such as Figure 2As shown, the second direction is the Y direction, the telescopic rod 61 has the freedom to extend and retract along the first direction X, and the moving rod 63 respectively contacts the balancing platform 3 and the guide surface 51 through two rollers 64; when the guide ring 5 rotates, the guide surface 51 cooperates with the spring 4 and the balancing platform 3 to push the moving rod 63 to reciprocate in the first direction X, and the moving rod 63 drives the connecting rod 62 to reciprocate in the first direction X, and the connecting rod 62 drives the telescopic rod 61 to extend and retract, so that the moving rod 63 can reciprocate in the first direction X.

[0041] It should be understood that, at this time, b is the farthest distance between the two rollers 64 in the first direction X, that is, the entire length of the transmission part 6 in the first direction X.

[0042] refer to Figure 3 and Figure 4 In an exemplary embodiment, the drive assembly 7 may include a mounting bracket 71, a motor 72 and a gear 73, wherein the mounting bracket 71 is fixed to the side of the first seat surface facing away from the second seat surface; the axial direction of the output shaft of the motor 72 is the same as the first direction X and is fixed to the mounting bracket 71; the gear 73 is sleeved on the outer periphery of the output shaft of the motor 72, and the gear 73 is engaged with the guide ring 5.

[0043] Specifically, the motor 72 is fixed to the side of the first seat surface away from the second seat surface through the mounting bracket 71. The motor 72 drives the gear 73 to rotate around the axial direction of the gear 73, and the gear 73 drives the guide ring 5 to rotate around the axial direction of the guide ring 5. In this way, the guide ring 5 can be rotated, and finally the balancing platform 3 is driven to swing actively; wherein, the guide ring 5 is provided with meshing teeth that mesh with the gear 73.

[0044] Furthermore, the speed of the guide ring 5 can be adjusted by adjusting the speed of the motor 72. The faster the speed of the guide ring 5, the faster the balance platform 3 swings; conversely, the slower the speed of the guide ring 5, the slower the balance platform 3 swings. In this way, the difficulty of balance training can be adjusted, which is suitable for use by different groups of people.

[0045] refer to Figure 2 In an exemplary embodiment, each spring 4 is located on the inner circumference of the guide ring 5; the limb balance training device may further include a rotating ring 8, which is rotatably connected to the side of the first seat surface away from the second seat surface and has the freedom to rotate around its own axis. The axial direction of the rotating ring 8 is the same as the axial direction of the guide ring 5 and is sleeved on the outer periphery of the guide ring 5; wherein the telescopic rod 61 is fixed to the side of the rotating ring 8 away from the base 1; the gear 73 is located between the rotating ring 8 and the guide ring 5 and meshes with the rotating ring 8 and the guide ring 5 respectively.

[0046] Specifically, the rotating ring 8 is sleeved on the outer periphery of the guide ring 5, and the gear 73 is located between the rotating ring 8 and the guide ring 5 and meshes with the rotating ring 8 and the guide ring 5 respectively. It can be seen that the meshing teeth on the guide ring 5 are arranged on the outer periphery of the guide ring 5, and the inner periphery of the rotating ring 8 is also provided with meshing teeth meshing with the gear 73. At this time, when the motor 72 drives the gear 73 to rotate, the gear 73 drives the guide ring 5 and the rotating ring 8 to rotate in opposite directions, and the rotating ring 8 drives the telescopic rod 61 to rotate synchronously around the axial direction of the guide ring 5. The telescopic rod 61 further drives the connecting rod 62 and the moving rod 63 and the roller 64 to rotate synchronously around the axial direction of the guide ring 5. In this way, the position of the moving rod 63 changes when the guide ring 5 rotates, that is, the position where the moving rod 63 pushes the balance platform 3 to swing continuously changes in the circumferential direction of the guide ring 5, and the tilt direction of the balance platform 3 is no longer fixed, further improving the training effect.

[0047] Among them, each spring 4 is located on the inner circumference of the guide ring 5, so that when the spring 4 is deformed, it will not affect the rotation of the guide ring 5 or the rotating ring 8. For example, if the spring is located between the guide ring 5 and the rotating ring 8, the spring 4 is in the rotation path of the connecting rod 62, affecting the rotation of the connecting rod 62.

[0048] refer to Figure 1 In an exemplary embodiment, the limb balance training device may further include a side panel 11, a top panel 12 and an armrest 13, wherein the side panel 11 is arranged around the periphery of the rotating ring 8 and is fixed to the base 1; the top panel 12 is fixed to the side of the side panel 11 away from the base 1 and is provided with a through hole 121 with a depth direction being the first direction X, the balance platform 3 is located at the through hole 121, and the orthographic projection of the through hole 121 on the first seat surface covers the orthographic projection of the balance platform 3 on the first seat surface; the armrest 13 is fixed to the side of the top panel 12 away from the side panel 11 and is arranged around the periphery of the through hole 121.

[0049] Specifically, such as Figure 1 As shown, most of the above components are located in the space enclosed by the base 1, the side panels 11 and the top panel 12, which effectively prevents the components from being damaged by external influences; at the same time, the armrests 13 are arranged around the periphery of the through hole 121, so that when the user has difficulty in maintaining balance during balance training, it is convenient for the user to hold the armrests 13 in time to prevent the user from falling.

[0050] The balancing platform 3 is located at the through hole 121 , and the orthographic projection of the through hole 121 on the first seat surface covers the orthographic projection of the balancing platform 3 on the first seat surface. It can be understood that the balancing platform 3 is in the through hole 121 when in the initial state.

[0051] Further, such as Figure 1 As shown, the armrest 13 has a gap for users to enter and exit; a control console is fixed on the armrest 13, and the control console is electrically connected to the motor 72. It is more convenient to control the switch of the motor 72 and adjust the speed of the motor 72 through the control console.

[0052] refer to Figure 1 In an exemplary embodiment, there is a gap between the balance platform 3 and the through hole 121; the limb balance training device may further include a flexible cloth 14, which seals the gap between the through hole 121 and the balance platform 3; wherein the flexible cloth 14 is made of elastic fabric.

[0053] Specifically, a flexible cloth 14 is provided to fill the gap between the balancing platform 3 and the through hole 121. When the balancing platform 3 is tilted, the gap between the balancing platform 3 and the through hole 121 becomes larger. If the user's belongings fall, they will be blocked by the flexible cloth 14 and will not slide into the gap along the tilted balancing platform 3, making it more convenient to use. When the flexible cloth 14 is made of elastic fabric, it will have a certain deformation ability and will not affect the normal tilting and swinging of the balancing platform 3.

[0054] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A limb balance training device, characterized in that: include: A base (1) having a first seat surface and a second seat surface arranged opposite to each other in a first direction, wherein the first direction is the same as a thickness direction of the base (1); A support portion (2) is fixed to a side of the first seat surface facing away from the second seat surface; a balancing platform (3) rotatably connected to a side of the support portion (2) facing away from the base (1) and having the freedom to swing in the first direction; A plurality of springs (4) are arranged at intervals on the periphery of the support portion (2), and each of the springs (4) is connected between the base (1) and the balancing platform (3); A guide ring (5) is rotatably connected to a side of the first seat surface facing away from the second seat surface and has a degree of freedom to rotate about the first direction, the side of the guide ring (5) facing away from the base (1) is a guide surface (51), and the distance between the guide surface (51) and the first seat surface has a variable range; a transmission part (6) disposed between the base (1) and the balancing platform (3) and respectively contacting the guide surface (51) and the balancing platform (3); the transmission part (6) having the freedom to move along the first direction; A driving assembly (7) is arranged on a side of the first seat surface facing away from the second seat surface and is connected to the guide ring (5). The driving assembly (7) provides a rotational driving force for the guide ring (5).

2. The limb balance training device according to claim 1, characterized in that: The limb balance training device also includes: A connecting ball (21) is fixed to a side of the support portion (2) facing the balancing platform (3); A mounting seat (31) is fixed to a side of the balancing platform (3) facing the connecting ball (21), and a mounting groove is provided on the mounting seat (31) for rotationally cooperating with the connecting ball (21).

3. The limb balance training device according to claim 1, characterized in that: The guide surface (51) comprises m groups of sub-guide surfaces connected end to end, wherein m is a positive integer.

4. The limb balance training device according to claim 3, characterized in that: In the first direction, the maximum distance between the plane of the side of the balancing platform (3) facing the guide ring (5) and the sub-guide surface is a, the length of the transmission part (6) is b, and a=b.

5. The limb balance training device according to claim 1, characterized in that: The included angle between the balancing platform (3) and the base (1) is c, and 0°≤c≤30°.

6. The limb balance training device according to claim 1, characterized in that: The transmission part (6) comprises: a telescopic rod (61) extending along the first direction; A connecting rod (62) is fixed to an end of the telescopic rod (61) away from the base (1); A moving rod (63) is located between the guide surface (51) and the balancing platform (3) and is fixed to the connecting rod (62), with both ends of the moving rod (63) extending to the balancing platform (3) and the guide surface (51) respectively; Two rollers (64) are arranged at two ends of the movable rod (63) and respectively contact the balancing platform (3) and the guide surface (51). The rollers (64) have the freedom to rotate around a second direction, which is the same as the radial direction of the guide ring (5) and perpendicular to the first direction.

7. The limb balance training device according to claim 6, characterized in that: The driving assembly (7) comprises: A mounting frame (71) is fixed to a side of the first seat surface facing away from the second seat surface; A motor (72), the output shaft of which is axially aligned with the first direction and is fixed to the mounting frame (71); The gear (73) is sleeved on the outer periphery of the output shaft of the motor (72), and the gear (73) is meshed with the guide ring (5).

8. The limb balance training device according to claim 7, characterized in that: Each of the springs (4) is located on the inner periphery of the guide ring (5); the limb balance training device further comprises: a rotating ring (8) rotatably connected to a side of the first seat surface facing away from the second seat surface and having the freedom to rotate around its own axial direction; the axial direction of the rotating ring (8) is the same as the axial direction of the guide ring (5) and is sleeved on the periphery of the guide ring (5); Wherein, the telescopic rod (61) is fixed to a side of the rotating ring (8) facing away from the base (1); The gear (73) is located between the rotating ring (8) and the guide ring (5) and is respectively engaged with the rotating ring (8) and the guide ring (5).

9. The limb balance training device according to claim 8, characterized in that: The limb balance training device also includes: A side plate (11) is disposed around the periphery of the rotating ring (8) and is fixed to the base (1); A top plate (12) is fixed to a side of the side plate (11) facing away from the base (1) and is provided with a through hole (121) whose depth direction is the first direction; the balancing platform (3) is located at the through hole (121); and the orthographic projection of the through hole (121) on the first seat surface covers the orthographic projection of the balancing platform (3) on the first seat surface; An armrest (13) is fixed to a side of the top plate (12) facing away from the side plate (11) and is arranged around the periphery of the through hole (121).

10. The limb balance training device according to claim 9, characterized in that: There is a gap between the balance platform (3) and the through hole (121); the limb balance training device further comprises: a flexible cloth (14) for sealing the gap between the through hole (121) and the balancing platform (3); Wherein, the flexible cloth (14) is made of elastic fabric.

Images