CN216496402U

CN216496402U - Ankle dynamic training device

Info

Publication number: CN216496402U
Application number: CN202122600496.4U
Authority: CN
Inventors: 陈磊; 孙泽刚; 李涛
Original assignee: Sichuan University of Science and Engineering
Current assignee: Sichuan University of Science and Engineering
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-05-13
Anticipated expiration: 2031-10-28

Abstract

The application relates to the technical field of auxiliary medical instruments and discloses an ankle dynamic training device which comprises a driving mechanism, an eccentric sliding block mechanism and a connecting rod mechanism; the eccentric sliding block mechanism comprises an eccentric wheel connected with the driving mechanism and a roller in contact fit with the eccentric wheel, the roller is rotatably arranged at one end of the connecting rod, and a sliding block in sliding fit with the sliding rail is fixedly arranged at the other end of the connecting rod; the connecting rod mechanism comprises a first connecting rod hinged to the position, close to the outer edge, of the eccentric wheel, the other end of the first connecting rod is hinged to a first top point of the triangular frame A, a second top point of the triangular frame A is hinged to the sliding block through a second connecting rod, and a third top point is detachably and fixedly connected with the pedal. Limit point distance is far away relatively about making the footboard form through combining eccentric slider mechanism and link mechanism in this application, and the motion trail of ankle joint when the accurate anthropomorphic dummy is walked in situ more, more effectual help user resumes the training.

Description

Ankle dynamic training device

Technical Field

The application relates to the technical field of auxiliary medical equipment, in particular to an ankle dynamic training device.

Background

The fracture treatment includes three stages of reduction, fixed and function exercise, and reduction and fixed have only accomplished preliminary treatment, and the recovery is very far away apart from limbs function, and the final purpose of wound orthopedics treatment work is to make the normal function of injured position recovery the most possible, and proper function training can prevent joint adhesion and rigidity, promotes the detumescence, and the activity of relaxing repeatedly of wounded aircraft nose simultaneously can make longitudinal extrusion force strengthen, and the fracture gap diminishes, promotes union. Because the direct walking training makes the ankle pressurized easily cause the secondary injury, early training mainly relies on medical personnel's massage or trainer's supplementary reach the purpose only with the ankle motion, current recovery trainer often can only drive the ankle and do simple recovery training motion along circular or oval orbit, the movement track of ankle when the walking of accurate anthropomorphic dummy can not, produce invalid training easily or increase the impact to the joint, cause the wounded still to need to continue to do the walking training in the longer period in later stage.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the track that the existing training device drives the ankle to move has great deviation with the actual walking track to cause the recovery training effect to be limited, the application provides a dynamic ankle training device.

In order to achieve the purpose, the technical scheme adopted by the application is as follows:

an ankle dynamic training device comprises a driving mechanism, an eccentric sliding block mechanism in transmission connection with the driving mechanism, and a connecting rod mechanism in transmission fit with the eccentric sliding block mechanism; the eccentric sliding block mechanism comprises an eccentric wheel connected with the driving mechanism and a roller in contact fit with the eccentric wheel, the roller is rotatably arranged at one end of the connecting rod, and a sliding block in sliding fit with the sliding rail is fixedly arranged at the other end of the connecting rod; the link mechanism comprises a first connecting rod hinged to the position, close to the outer edge, of the eccentric wheel, the other end of the first connecting rod is hinged to a first top point of the triangular frame A, a second top point of the triangular frame A is hinged to the sliding block through a second connecting rod, and a third top point is detachably and fixedly connected with the pedal.

The training device in the scheme is a device for helping a patient with an injured ankle to perform a proper amount of ankle movement before walking and training, and because the patient cannot move, the principle of the training device is to simulate the movement track of the ankle joint when the person steps on the spot so that the ankle joint keeps a proper amount of movement and keeps the same or similar rotation as the walking, the scheme mainly utilizes the connecting rods to form the track of the arc movement of the pedal along a closed loop, wherein the first connecting rod, the triangular frame A and the second connecting rod are mainly used for enabling the pedal to form the arc-shaped track with a certain length and a curvature radius, and the arc formed by the movement track of the ankle when the person walks is relatively smooth (namely the curvature radius is larger), especially the translation distance of the ankle joint is relatively close when the training is recovered, so that under the condition that the length of the connecting rods is limited, the translation amount is relatively smaller under the condition that the curvature radius of the movement track is larger, the eccentric wheel rotating eccentrically and the roller slide block matched with the eccentric wheel are arranged to limit the distance between the left limit point and the right limit point in the motion trail of the pedal, and particularly, the motion range of the slide block is between the nearest distance and the farthest distance between the edge of the eccentric wheel and the rotation center.

Further, a triangular frame B is further arranged between the triangular frame A and the pedal, a first vertex of the triangular frame B is hinged to a third vertex of the triangular frame A, a second vertex of the triangular frame B is hinged to the fixed support through a third connecting rod, and the third vertex of the triangular frame B is detachably and fixedly connected with the pedal.

Set up two triangle frames in link mechanism in this scheme, wherein, triangle frame A is connected to the slider through the second connecting rod, and triangle frame B is connected to fixing support through the third connecting rod, and the output point of movement track is on triangle frame B, and on the one hand, utilize fixing support and triangle frame B to restrict the distance between the limit about movement track, and on the other hand, the rotation angle that further reduces the footboard increases the radius of curvature of arc orbit for the movement track that forms is more level and smooth and accurate.

Further, the footboard passes through locking mechanism demountable installation in one side of three angular frame B, the footboard bottom is equipped with the mount pad, and locking mechanism is including passing the installation axle of three angular frame B and footboard simultaneously, the position that the installation axle is close to both ends is equipped with the shaft shoulder that is used for respectively with three angular frame B and mount pad surface butt, install the axle both ends and be equipped with respectively and be used for with retaining member complex external screw thread, install the retaining member terminal surface at axle both ends respectively with three angular frame B and footboard surface butt.

Furthermore, the driving mechanism comprises a servo motor and a speed reducing mechanism connected with the servo motor, and the speed reducing mechanism is in transmission connection with the eccentric wheel. The stepping motor is a motor which runs stably, particularly can still avoid low-frequency vibration in a low-speed state, and the requirement of a user on the stability of rehabilitation training is met better.

The beneficial effect of this application is: limit point distance is far away relatively about making the footboard form through combining eccentric slider mechanism and link mechanism in this application, and the motion trail of ankle joint when the accurate anthropomorphic dummy is walked in situ more, more effectual help user resumes the training.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram of example 1 in the present application;

FIG. 2 is a schematic structural diagram of embodiment 2 of the present application;

FIG. 3 is a schematic view of the connection between the pedal and the triangle frame;

fig. 4 is a schematic diagram of the pedal movement locus of embodiment 2 in the present application.

In the figure: 1-eccentric wheel; 2-a roller; 3-a connecting rod; 4-a slide rail; 5-a first link; 6-triangular frame A; 7-a second link; 8-a pedal; 9-a triangular frame B; 10-a third link; 11-a fixed support; 12-installing the shaft; 1201-shoulder; 13-a mounting seat; 14-locking member.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between similar elements and are not intended to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example 1:

an ankle dynamic training device as shown in fig. 1, comprising a driving mechanism (not shown in the figure), an eccentric slider mechanism in transmission connection with the driving mechanism, and a linkage mechanism in transmission fit with the eccentric slider mechanism; the eccentric sliding block mechanism comprises an eccentric wheel 1 connected with the driving mechanism and a roller 2 in contact fit with the eccentric wheel 1, the roller 2 is rotatably installed at one end of a connecting rod 3, and a sliding block in sliding fit with a sliding rail 4 is fixedly arranged at the other end of the connecting rod 3; the link mechanism comprises a first connecting rod 5 hinged to the eccentric wheel 1 close to the outer edge, the other end of the first connecting rod 5 is hinged to a first vertex of a triangular frame A6, a second vertex of the triangular frame A6 is hinged to a sliding block through a second connecting rod 7, and a third vertex is detachably and fixedly connected with the pedal 8.

The working principle is as follows:

during the working process, the eccentric rotation of the eccentric wheel 1 is converted into the reciprocating sliding of the sliding block through the roller 2 and the connecting rod 3, when the edge point of the eccentric wheel 1 in contact with the roller 2 is the point farthest from the rotating center of the eccentric wheel 1, the sliding block moves to the farthest end, and when the edge point of the eccentric wheel 1 in contact with the roller 2 is the point closest to the rotating center of the eccentric wheel 1, the sliding block moves to the nearest end. Meanwhile, the first connecting rod 5 hinged to the eccentric wheel 1 rotates along with the first connecting rod to drive the triangular frame A6 to generate height change, three angles of the triangular frame A6 are respectively connected with the first connecting rod 5, the second connecting rod 7 and the pedal 8, the triangular frame A6 is of a stable triangular structure and can only move integrally, two ends of the second connecting rod 7 are respectively connected with the triangular frame A6 and the sliding block to limit the height change range of the triangular frame A6, angle change is formed, the pedal 8 is driven to move along an arc-shaped track, and the ankle movement track when a human body walks in situ is formed.

It should be noted that, although not shown in the drawings, the slide rail 4 in the present application should be fixed (e.g., fixedly mounted on the base) so that the slide block can reciprocate linearly based on the motion tracks of the roller 2, the connecting rod 3 and the slide block in the present application.

Example 2:

in this embodiment, the link mechanism is further optimized and defined based on embodiment 1.

As shown in fig. 2, a triangular frame B9 is further arranged between the triangular frame a6 and the pedal 8, a first vertex of the triangular frame B9 is hinged to a third vertex of the triangular frame a6, a second vertex of the triangular frame B9 is hinged to the fixed support 11 through a third connecting rod 10, and the third vertex of the triangular frame B9 is detachably and fixedly connected with the pedal 8.

In the present embodiment, a triangle frame B9 is added to the link mechanism to improve the accuracy of the motion track of the pedal 8, specifically, three vertexes of the triangle frame a6 are respectively connected to the first link 5, the second link 7 and the triangle frame B9, and the other two vertexes of the triangle frame B9 are respectively connected to the third link 10 and the pedal 8. When the eccentric wheel 1 rotates, the sliding block is also pushed to slide along the sliding rail 4, the rotation and the translation of the triangular frame A6 restrict the movement of the triangular frame B9, and the connection of the third connecting rod 10 and the fixed support 11 limits the translation distance of the triangular frame B9 and the return path of the pedal 8 during the closed-loop movement. As shown in fig. 4, which is a schematic diagram of the movement track of the pedal 8, compared to the existing training device that drives the ankle to move along an elliptical track, the movement track output by this embodiment has only a lower half that is similar to an ellipse, and the center of the upper half is above the curve. The curve in fig. 4 is viewed anticlockwise as actual movement, the initial trajectory is a curve with the lower half part close to an ellipse, the trajectory of the ankle when the user starts is simulated, the trajectory of the ankle when the user falls is the upper half part of the curve in the figure, and the circle center above the curve is more in line with the actual movement condition.

Example 3:

in this embodiment, the connection manner between the pedal 8 and the link mechanism is further defined on the basis of embodiment 2.

As shown in fig. 3, footboard 8 passes through locking mechanism demountable installation in the one side of triangle frame B9, footboard 8 bottom is equipped with mount pad 13, and locking mechanism includes the installation axle 12 that passes triangle frame B9 and footboard 8 simultaneously, the position that installation axle 12 is close to both ends is equipped with the shaft shoulder 1201 that is used for respectively with triangle frame B9 and mount pad 13 surface butt, installation axle 12 both ends are equipped with respectively and are used for with retaining member 14 complex external screw thread, the retaining member 14 terminal surface at installation axle 12 both ends respectively with triangle frame B9 and footboard 8 surface butt.

In the embodiment, the pedal 8 is arranged at one side of the triangular frame B9, so that the wounded person can place the feet on the pedal 8 for recovery training without being interfered by the movement of the connecting rod mechanism. And the locking mechanism is arranged to adjust the inclination angle of the pedal 8 according to actual conditions. Specifically, the triangular frame B9 and the pedal 8 are respectively matched with the mounting shaft 12 from two ends of the mounting shaft 12, the shaft shoulder 1201 determines the positions of the triangular frame B9 and the pedal 8, the locking piece 14 is screwed in from one side of the triangular frame B9 to fix the connection between the mounting shaft 12 and the triangular frame B9, and then the other locking piece 14 is screwed in after the inclination angle of the pedal 8 is adjusted until the locking piece 14 and the shaft shoulder 1201 clamp the mounting seat 13 of the pedal 8.

It should be noted that the present embodiment provides an inventive concept of a mounting manner of the pedal 8, which aims to arrange the pedal 8 at the side of the link mechanism and to adjust the angle, and based on the inventive concept, the pedal 8 can be connected in the same manner as the triangular frame a6 in embodiment 1.

Meanwhile, preferably, the driving mechanism in the scheme comprises a servo motor and a speed reducing mechanism connected with the servo motor, and the speed reducing mechanism is in transmission connection with the eccentric wheel 1.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An ankle dynamic training device, comprising: the eccentric sliding block mechanism is in transmission connection with the driving mechanism, and the connecting rod mechanism is in transmission fit with the eccentric sliding block mechanism;

the eccentric sliding block mechanism comprises an eccentric wheel (1) connected with the driving mechanism and a roller (2) in contact fit with the eccentric wheel (1), the roller (2) is rotatably installed at one end of a connecting rod (3), and a sliding block in sliding fit with a sliding rail (4) is fixedly arranged at the other end of the connecting rod (3);

the link mechanism comprises a first connecting rod (5) which is hinged to the position, close to the outer edge, of the eccentric wheel (1), the other end of the first connecting rod (5) is hinged to a first top point of the triangular frame A (6), a second top point of the triangular frame A (6) is hinged to the sliding block through a second connecting rod (7), and a third top point is detachably and fixedly connected with the pedal (8).

2. The dynamic ankle training device of claim 1, wherein: still be equipped with triangle frame B (9) between triangle frame A (6) and footboard (8), the first summit of triangle frame B (9) is articulated with the third summit of triangle frame A (6), and the second summit of triangle frame B (9) is articulated with fixing support (11) through third connecting rod (10), and the third summit of triangle frame B (9) can dismantle fixed connection with footboard (8).

3. The dynamic ankle training device of claim 1, wherein: footboard (8) pass through locking mechanism demountable installation in one side of three angular frame B (9), footboard (8) bottom is equipped with mount pad (13), and locking mechanism is including passing installation axle (12) of three angular frame B (9) and footboard (8) simultaneously, the position that installation axle (12) is close to both ends is equipped with shaft shoulder (1201) that is used for respectively with three angular frame B (9) and mount pad (13) surface butt, installation axle (12) both ends are equipped with respectively and are used for with retaining member (14) complex external screw thread, retaining member (14) terminal surface at installation axle (12) both ends respectively with three angular frame B (9) and footboard (8) surface butt.

4. The dynamic ankle training device of claim 1, wherein: the driving mechanism comprises a servo motor and a speed reducing mechanism connected with the servo motor, and the speed reducing mechanism is in transmission connection with the eccentric wheel (1).