CN111202657A

CN111202657A - Ankle joint rehabilitation training device

Info

Publication number: CN111202657A
Application number: CN202010134001.0A
Authority: CN
Inventors: 罗逊; 赖坤元; 邱伟锋; 张宇玲; 王琳; 石雷; 罗晓琳; 郭泽林; 全芝宁; 李鹏程
Original assignee: Fujian Harobo Rehabilitation Robot Production Co Ltd
Current assignee: Gangruan Robot Intelligent Technology Zhejiang Co ltd
Priority date: 2020-03-02
Filing date: 2020-03-02
Publication date: 2020-05-29

Abstract

The invention relates to an ankle joint rehabilitation trainer, which comprises: a support; the shank guard plate is connected with the bracket; the pedal piece is rotatably connected with the bracket through a first rotating shaft; the crankshaft assembly is rotatably connected with the pedal piece at one end and is rotatably connected with a sliding block at the other end; and the driving assembly is arranged on the bracket and is used for driving the sliding block to do reciprocating motion, so that the crankshaft assembly can drive the pedal to do circular motion around the first rotating shaft. The ankle joint rehabilitation trainer has a simple structure, can realize the continuous activity training of the ankle joint of a patient without a complex control program, and can effectively reduce the production cost.

Description

Ankle joint rehabilitation training device

Technical Field

The invention relates to the technical field of medical instruments, in particular to an ankle joint rehabilitation training device.

Background

For patients with ankle injuries, treatment by rehabilitation training is required. Traditional rehabilitation training is usually that medical personnel carry out "one-to-one" training aiding to the patient, and whole training process is wasted time and energy. Most ankle joint rehabilitation trainers capable of performing autonomous auxiliary training are complex in structure, continuous activity training of ankle joints of patients can be realized only by complex control programs, and production cost is high.

Disclosure of Invention

Based on this, it is necessary to provide an ankle joint rehabilitation training device aiming at the above problems, which has a simple structure, can realize the continuous activity training of the ankle joint of the patient without a complicated control program, and can effectively reduce the production cost.

An ankle joint rehabilitation trainer, comprising:

a support;

the shank guard plate is connected with the bracket;

the pedal piece is rotatably connected with the bracket through a first rotating shaft;

the crankshaft assembly is rotatably connected with the pedal piece at one end and is rotatably connected with a sliding block at the other end; and

the driving assembly is arranged on the support and used for driving the sliding block to do reciprocating motion, and then the crankshaft assembly can drive the pedal to do circular motion around the first rotating shaft.

When using above-mentioned ankle joint rehabilitation training device to carry out rehabilitation training, patient's foot is fixed through pedal, and the shank position is fixed through the shank backplate, is reciprocating motion through drive assembly drive slider, and then can make bent axle subassembly motion and drive pedal and be circular motion around first pivot to realize patient's ankle joint's the training of continuously moving about, whole process need not medical personnel and participates in, and the patient can independently carry out rehabilitation training. The ankle joint rehabilitation trainer has a simple structure, can realize the continuous activity training of the ankle joint of a patient without a complex control program, and can effectively reduce the production cost.

In one embodiment, the driving assembly comprises a driving member and a vertically extending screw rod, one end of the screw rod is rotatably connected with the bracket, the other end of the screw rod is in driving connection with the driving member, the sliding block is in driving connection with the screw rod, and the driving member is used for driving the screw rod to rotate, so that the sliding block can reciprocate along the screw rod.

In one embodiment, a fixed seat is arranged at the bottom of the bracket, a bearing is mounted on the fixed seat, and the first rotating shaft is rotatably connected with the fixed seat through the bearing.

In one embodiment, the ankle joint rehabilitation training device further comprises a protective cover, the protective cover is fixedly connected with the support, and an accommodating cavity for accommodating the driving assembly and the sliding block is formed between the protective cover and the support.

In one embodiment, the crankshaft assembly comprises a crankshaft body and a push rod, the crankshaft body comprises a straight shaft section and a bent shaft section which are connected with each other, one end of the push rod is slidably matched with the straight shaft section, the other end of the push rod is rotatably connected with the sliding block, and the end, far away from the straight shaft section, of the bent shaft section is rotatably connected with the pedal.

In one embodiment, the straight shaft section is provided with a hollow cavity, one end of the push rod is movably inserted into the hollow cavity, and the crankshaft assembly further comprises a buffer structure arranged in the hollow cavity and used for buffering the movement of the push rod.

In one embodiment, a piston is arranged at one end of the push rod, the diameter of the piston is larger than that of the push rod, the end, provided with the piston, of the push rod is movably limited in the hollow cavity, the buffer structure comprises a first spring, one end of the first spring is elastically abutted to the bottom wall of the hollow cavity, and the other end of the first spring is elastically abutted to the lower end face of the piston.

In one embodiment, an insertion port into which the piston is inserted is formed in an end face of the straight shaft section, and the crankshaft assembly further comprises a limiting member arranged at the insertion port, wherein the limiting member is used for limiting the piston to be separated from the insertion port.

In one embodiment, the buffer structure further includes a second spring, the second spring is sleeved on the periphery of the push rod, one end of the second spring is elastically abutted to the upper end surface of the piston, and the other end of the second spring is elastically abutted to the bottom surface of the limiting member.

In one embodiment, the crankshaft assembly further comprises a second rotating shaft and a third rotating shaft, a hinge ring is arranged at one end, away from the piston, of the push rod, the hinge ring is hinged to the sliding block through the second rotating shaft, a hinge hole for the third rotating shaft to pass through is formed in the end portion of the bent shaft section, and the bent shaft section is hinged to the pedal through the third rotating shaft.

Drawings

FIG. 1 is a schematic structural view of an ankle rehabilitation training device according to an embodiment of the present invention;

FIG. 2 is a schematic view of the ankle rehabilitation training device shown in FIG. 1 without a protective cover;

FIG. 3 is a schematic diagram of the ankle rehabilitation trainer of FIG. 2 from another perspective;

FIG. 4 is an exploded perspective view of the ankle rehabilitation exerciser of FIG. 1;

FIG. 5 is an exploded view of the crankshaft assembly of FIG. 4.

10. A support; 11. a guide bar; 12. a fixed seat; 13. a bearing; 20. a shank guard plate; 30. a foot pedal; 31. a first rotating shaft; 40. a crankshaft assembly; 41. a crankshaft body; 411. a straight shaft section; 4111. an interface; 412. a bent shaft section; 4121. a hinge hole; 42. a push rod; 421. a piston; 422. a hinge ring; 43. a first spring; 44. a second spring; 45. a limiting member; 46. a second rotating shaft; 47. a third rotating shaft; 50. a slider; 51. a sliding part; 52. a switching part; 60. a drive assembly; 61. a drive member; 62. a screw rod; 70. a protective cover.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," and the like are used herein for illustrative purposes only. The terms "first," "second," and "third" as used herein do not denote any particular order or quantity, but rather are used to distinguish one element from another.

Referring to fig. 1 and 2, an ankle rehabilitation training device according to an embodiment of the present invention includes a support frame 10, a shank protector 20, a footrest 30, a crank assembly 40, and a driving assembly 60. The shank guard plate 20 is connected with the bracket 10; the foot rest 30 is rotatably connected with the bracket 10 through a first rotating shaft 31; one end of the crank assembly 40 is rotatably connected with the pedal 30, and the other end is rotatably connected with the sliding block 50; the driving assembly 60 is mounted on the bracket 10, and the driving assembly 60 is used for driving the sliding block 50 to reciprocate, so that the crankshaft assembly 40 drives the pedal 30 to make a circular motion around the first rotating shaft 31.

The support 10 is used to form a main body support structure, the lower leg guard 20 is used to fix the lower leg part of the patient, and the foot rest 30 is used to support and fix the foot of the patient. Specifically, as shown in fig. 3, the calf guard 20 is an arc-shaped plate structure with an opening on one side, the calf guard 20 is provided with a through hole for the strap to pass through, the pedal 30 is a box-shaped structure with an opening on the top, when in use, the foot of the patient steps into the pedal 30, the calf guard 20 semi-surrounds the calf of the patient, and the operation is simple and convenient. The calf guard 20 can be attached to the brace 10 by fasteners (e.g., screws, bolts, or pins). Optionally, the mounting height of the calf guard 20 relative to the support 10 is adjustable, so that the calf guard 20 can be moved up and down to a proper position relative to the support 10 according to the leg length of the patient and then locked and fixed by the fastener, thereby being better suitable for different patients. The support 10, the pedal member 30, the crankshaft assembly 40 and the slide block 50 are mutually matched to form a linkage mechanism, the drive assembly 60 drives the slide block 50 to do reciprocating motion along the vertical direction, and further the crankshaft assembly 40 can be converted into circular motion of the pedal member 30, so that the whole structure is simple, and the control is convenient.

When using above-mentioned ankle joint rehabilitation training device to carry out the rehabilitation training, patient's foot passes through pedal 30 and fixes, and the shank position is fixed through shank backplate 20, is reciprocating motion through drive assembly 60 drive slider 50, and then can make the motion of bent axle subassembly 40 and drive pedal 30 and be circular motion around first pivot 31 to realize patient's ankle joint's the training of moving about continuously, whole process need not medical personnel and participates in, and the patient can independently carry out the rehabilitation training. The ankle joint rehabilitation trainer has a simple structure, can realize the continuous activity training of the ankle joint of a patient without a complex control program, and can effectively reduce the production cost.

Referring to fig. 2 and 4, in one embodiment, the driving assembly 60 includes a driving member 61 and a vertically extending screw rod 62, one end of the screw rod 62 is rotatably connected to the bracket 10, the other end of the screw rod 62 is drivingly connected to the driving member 61, the sliding block 50 is drivingly connected to the screw rod 62, and the driving member 61 is configured to drive the screw rod 62 to rotate, so that the sliding block 50 can reciprocate along the screw rod 62. Specifically, as shown in fig. 4, the bracket 10 includes a vertical support plate and horizontal support plates disposed at upper and lower ends of the vertical support plate, the screw rod 62 is rotatably mounted between the two horizontal support plates, the sliding block 50 is sleeved on the screw rod 62 and is in threaded transmission with the screw rod 62, the driving member 61 is fixed on the horizontal support plate located at the upper side, a driving shaft of the driving member 61 is in driving connection with an upper end of the screw rod 62, and the driving member 61 can be specifically a driving motor. The linear reciprocating motion of the sliding block 50 is realized through the matching of the driving piece 61 and the screw rod 62, the structure is simple, the control is convenient, and the transmission is reliable. Of course, in other embodiments, the sliding block 50 may be directly pushed by an electric push rod to linearly reciprocate along the vertical direction.

Alternatively, as shown in fig. 2, the sliding block 50 includes a sliding portion 51 and an adapter portion 52, the sliding portion 51 is in transmission connection with the screw 62, and the adapter portion 52 is hinged to the crankshaft assembly 40. The sliding portion 51 and the adapting portion 52 may be integrally formed, or may be separately formed and connected and fixed by a fastener (e.g., a screw, a bolt, etc.).

Further, the support 10 further includes a vertically extending guide rod 11, and the slider 50 is slidably engaged with the guide rod 11. The movement of the slide block 50 in the vertical direction and thus the rotation of the foothold 30 is made more smooth by the guiding action of the guide lever 11. Alternatively, the number of the guide bars 11 may be set to two or more. For example, as shown in fig. 2, two opposite sides of the screw rod 62 are respectively provided with a guide rod 11, the screw rod 62 and the two guide rods 11 both extend vertically, and the two guide rods 11 simultaneously guide the slider 50, so that the motion stability of the slider 50 can be further ensured.

Further, the bottom of the bracket 10 is provided with a fixed seat 12, a bearing 13 is installed on the fixed seat 12, and the first rotating shaft 31 is rotatably connected with the fixed seat 12 through the bearing 13. Specifically, as shown in fig. 2 and 4, the fixing base 12 includes an upper side plate fixedly connected to a side portion of the support 10, a bottom plate disposed opposite to a bottom portion of the support 10, and a lower side plate extending downward from the bottom plate, two opposite sides of the lower side plate are respectively provided with a bearing 13, specifically, the lower side plate may be a square bearing 13, one end of the first rotating shaft 31 is provided with a mounting plate for fixedly connecting with the pedal 30, the first rotating shaft 31 is matched with the bearing 13, so as to achieve rotatable connection between the pedal 30 and the fixing base 12, and by providing the bearing 13, the rotation of the first rotating shaft 31 is smoother, and the rotational stability of the pedal 30 can be further ensured.

Further, as shown in fig. 1, the ankle rehabilitation training device further includes a protective cover 70, the protective cover 70 is fixedly connected to the support 10, and a receiving cavity for receiving the driving assembly 60 and the slider 50 is formed between the protective cover 70 and the support 10. Through setting up protective cover 70, can play certain dustproof effect to drive assembly 60 and slider 50, also can avoid the patient to miss simultaneously and bump drive assembly 60 or slider 50 and cause unnecessary injury in the use to guarantee the safety in utilization.

Referring to fig. 3 and 5, in an embodiment, the crankshaft assembly 40 includes a crankshaft body 41 and a push rod 42, the crankshaft body 41 includes a straight shaft section 411 and a bent shaft section 412 connected to each other, one end of the push rod 42 is slidably engaged with the straight shaft section 411, the other end is rotatably connected to the slider 50, and one end of the bent shaft section 412 away from the straight shaft section 411 is rotatably connected to the pedal 30. When the driving assembly 60 drives the sliding block 50 to reciprocate vertically, the pushing rod 42 can be driven to do telescopic motion along the axial direction relative to the crankshaft body 41, meanwhile, the crankshaft body 41 can rotate, and then the pedal 30 can be driven to do circular motion, the whole structure is simple, the motion is flexible, and a good training effect can be achieved on the ankle joint of a patient.

Further, a hollow cavity is arranged in the straight shaft section 411, one end of the push rod 42 is movably inserted into the hollow cavity, and the crankshaft assembly 40 further comprises a buffer structure arranged in the hollow cavity, wherein the buffer structure is used for buffering the movement of the push rod 42. Through setting up buffer structure, can play fine cushioning effect to the distance change of bent axle subassembly 40 motion conversion to alleviate the impact that produces pedal 30, avoid producing the secondary damage to the patient. Wherein, the buffer structure can be a spring or an elastic rubber column.

In an embodiment, as shown in fig. 5, one end of the push rod 42 is provided with a piston 421, the diameter of the piston 421 is larger than the diameter of the push rod 42, the end of the push rod 42 provided with the piston 421 is movably limited in the hollow cavity, the buffer structure includes a first spring 43, one end of the first spring 43 is elastically abutted against the bottom wall of the hollow cavity, and the other end is elastically abutted against the lower end surface of the piston 421. In the movement process of the push rod 42, energy is absorbed through the elastic deformation of the spring, and a good buffering effect can be achieved.

Furthermore, an end surface of the straight shaft segment 411 is provided with an insertion port 4111 into which the piston 421 is inserted, the crankshaft assembly 40 further includes a limiting member 45 disposed at the insertion port 4111, and the limiting member 45 is used for limiting the piston 421 to be disengaged from the insertion port 4111. It can be understood that, in order to facilitate assembly, an aperture of the insertion port 4111 needs to be slightly larger than a diameter of the piston 421, when assembly is performed, the first spring 43 is placed into the hollow cavity from the insertion port 4111, the piston 421 of the push rod 42 is inserted into the hollow cavity from the insertion port 4111, the lower end of the piston 421 is used for limiting the position of the first spring 43, the limiting member 45 is then fixed to the insertion port 4111, and the limiting member 45 can partially cover the insertion port 4111, so that the piston 421 can be prevented from coming out of the insertion port 4111, and the assembly reliability of the push rod 42 and the crankshaft body 41 can be ensured. Specifically, the limiting member 45 includes a top plate attached to the end surface of the straight shaft segment 411, and a bending plate extending downward from one side of the top plate, a notch groove for the push rod 42 to pass through is formed in the other side of the top plate, and the bending plate is connected and fixed to the side portion of the straight shaft segment 411.

In order to further improve the buffering effect, the buffering structure further includes a second spring 44, the second spring 44 is sleeved on the periphery of the push rod 42, one end of the second spring 44 is elastically abutted to the upper end surface of the piston 421, and the other end is elastically abutted to the bottom surface of the limiting member 45.

Further, the crankshaft assembly 40 further includes a second rotating shaft 46 and a third rotating shaft 47, a hinge ring 422 is disposed at one end of the push rod 42 away from the piston 421, the hinge ring 422 is hinged to the slider 50 through the second rotating shaft 46, a hinge hole 4121 for the third rotating shaft 47 to pass through is disposed at an end of the bent shaft section 412, and the bent shaft section 412 is hinged to the pedal 30 through the third rotating shaft 47.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An ankle joint rehabilitation training device, comprising:

a support;

the shank guard plate is connected with the bracket;

2. The ankle joint rehabilitation trainer as claimed in claim 1, wherein the driving assembly comprises a driving member and a vertically extending screw rod, one end of the screw rod is rotatably connected with the bracket, the other end of the screw rod is in driving connection with the driving member, the slider is in driving connection with the screw rod, and the driving member is used for driving the screw rod to rotate so as to enable the slider to reciprocate along the screw rod.

3. The ankle joint rehabilitation training device according to claim 1, wherein a fixing seat is arranged at the bottom of the support, a bearing is mounted on the fixing seat, and the first rotating shaft is rotatably connected with the fixing seat through the bearing.

4. The ankle joint rehabilitation trainer as claimed in claim 1, further comprising a protective cover fixedly connected to the bracket, wherein a receiving cavity for receiving the driving assembly and the slider is formed between the protective cover and the bracket.

5. The ankle joint rehabilitation training device according to any one of claims 1 to 4, wherein the crankshaft assembly comprises a crankshaft body and a push rod, the crankshaft body comprises a straight shaft section and a bent shaft section which are connected with each other, one end of the push rod is slidably matched with the straight shaft section, the other end of the push rod is rotatably connected with the sliding block, and the end of the bent shaft section, which is far away from the straight shaft section, is rotatably connected with the pedal piece.

6. The ankle joint rehabilitation training device according to claim 5, wherein the straight shaft section is provided with a hollow cavity, one end of the push rod is movably inserted into the hollow cavity, and the crank shaft assembly further comprises a buffer structure arranged in the hollow cavity, and the buffer structure is used for buffering the movement of the push rod.

7. The ankle joint rehabilitation training device according to claim 6, wherein a piston is disposed at one end of the push rod, the diameter of the piston is larger than that of the push rod, the end of the push rod, where the piston is disposed, is movably defined in the hollow cavity, the buffer structure comprises a first spring, one end of the first spring is elastically abutted to the bottom wall of the hollow cavity, and the other end of the first spring is elastically abutted to the lower end face of the piston.

8. The ankle joint rehabilitation training device according to claim 7, wherein an insertion port into which the piston is inserted is provided on an end surface of the straight shaft section, the crankshaft assembly further includes a limiting member provided at the insertion port, and the limiting member is used for limiting the piston to be removed from the insertion port.

9. The ankle joint rehabilitation training device according to claim 8, wherein the buffer structure further comprises a second spring, the second spring is sleeved on the periphery of the push rod, one end of the second spring is elastically abutted with the upper end face of the piston, and the other end of the second spring is elastically abutted with the bottom face of the limiting member.

10. The ankle joint rehabilitation training device according to claim 7, wherein the crankshaft assembly further comprises a second rotating shaft and a third rotating shaft, a hinge ring is arranged at one end of the push rod, which is far away from the piston, and is hinged to the sliding block through the second rotating shaft, a hinge hole for the third rotating shaft to pass through is arranged at the end of the bent shaft section, and the bent shaft section is hinged to the pedal through the third rotating shaft.