CN113476269A

CN113476269A - Knee joint rehabilitation training device

Info

Publication number: CN113476269A
Application number: CN202110689832.9A
Authority: CN
Inventors: 任宇鹏; 祝剑虹; 司志宁
Original assignee: Beijing Ltk Medical Technology Co ltd; Beijing Ltk Technology Co ltd; Hangzhou Extreme Medical Tech Co ltd
Current assignee: Beijing Ltk Medical Technology Co ltd; Beijing Ltk Technology Co ltd; Hangzhou Extreme Medical Tech Co ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2021-10-08
Anticipated expiration: 2041-06-22
Also published as: WO2022267370A1; CN113476269B

Abstract

The invention provides knee joint rehabilitation training equipment which comprises a seat, a knee joint adapter and a driving motor, wherein the seat comprises a support frame and a cushion arranged on the support frame, a middle gap is formed in the position, in front of the support frame, of the cushion, the knee joint adapter comprises a mounting frame and an adapting piece, the adapting piece is detachably arranged on the mounting frame, the driving motor is arranged at the middle gap, the driving motor is provided with a rotating shaft, and the mounting frame is fixed on the rotating shaft so as to rotate along with the rotating shaft to drive the adapting piece. According to the invention, the mounting frame of the mounting adapter is directly fixed on the rotating shaft of the driving motor, and the driving motor is arranged at the notch in the middle of the cushion, so that a structure with a power source placed in the middle and a motor directly driven is formed, and the device not only can be used for bilateral training and has simple transmission, reduces mechanical transmission errors and is convenient for fine control.

Description

Knee joint rehabilitation training device

Technical Field

The invention relates to the technical field of medical equipment, in particular to knee joint rehabilitation training equipment.

Background

Rehabilitation therapy is a new treatment subject for promoting the rehabilitation of the cardiac function of patients and disabled persons, and is also a new technical specialty, and aims to enable people to recover daily life, study, work and labor, and social living ability as much as possible, integrate into the society and improve the quality of life.

In present rehabilitation medicine field, to causing the hemiplegia patient of low limbs to adopt artifical supplementary or equipment training assistance more because of the cerebral apoplexy wind, because when adopting artifical training assistance, medical personnel intensity of labour is big, is difficult to reach anticipated recovered effect, consequently adopts equipment training assistance mostly, in the training assistance equipment to knee joint rehabilitation training equipment is more common.

The existing knee joint rehabilitation equipment in the market comprises electric unilateral training equipment and electric bilateral training equipment. Unilateral training equipment can only perform unilateral training; two side training equipment is because the power supply sets up in equipment one side mostly, and equipment is bulky, and although there is the power supply to set up the two side training equipment between two legs, drive mechanism is complicated, and has mechanical transmission error, can't accomplish meticulous control, and the rehabilitation training person feels not good enough when using.

Disclosure of Invention

In order to at least partially solve the problems in the prior art, the invention provides a knee joint rehabilitation training device which can perform bilateral training and has simple transmission.

The invention provides knee joint rehabilitation training equipment which comprises a seat, a knee joint adapter and a driving motor, wherein the seat comprises a support frame and a cushion arranged on the support frame, and the cushion is provided with a middle gap in the front position of the support frame; the knee joint adapter comprises a mounting frame and an adapting piece, and the adapting piece is detachably arranged on the mounting frame; the driving motor is arranged at the notch of the middle part, the driving motor is provided with a rotating shaft, and the mounting frame is fixed on the rotating shaft so as to be capable of rotating along with the rotating shaft to further drive the adapting piece.

According to the knee joint rehabilitation training equipment, the mounting frame for mounting the adapter is directly fixed on the rotating shaft of the driving motor, and the driving motor is arranged at the middle notch of the cushion, so that a structure with a power source placed in the middle and a motor directly driven is formed, bilateral training can be achieved, transmission is simple, mechanical transmission errors are reduced, and fine control is facilitated.

Exemplarily, the driving motor further comprises a housing and a stator fixed in the housing, wherein the inner wall of the stator is circumferentially provided with a chute for placing a coil, the chute has an inclination angle alpha relative to the axial direction of the stator, and the alpha is 3-12 DEG

Illustratively, the rotating shaft comprises a shaft body, a supporting body and a surface body, the surface body is annularly arranged on the periphery of the shaft body through the supporting body, magnetic steel is arranged on the surface body, a supporting space is formed between the shaft body and the surface body, and the supporting body extends outwards from the middle of the shaft body in the radial direction to divide the supporting space into a left part and a right part so as to form a double-side bearing supporting structure.

Illustratively, the magnetic steel has a first axial length L1, and the stator has a second axial length L2, L1-L2 > 10% xL 2.

Illustratively, the assembly concentricity deviation between the stator and the rotating shaft is < 0.02 mm.

Illustratively, the proportion of the space in the chute occupied by the coil after being placed in the chute is defined as a slot-full rate, and the slot-full rate is greater than 70%.

Illustratively, the number of the chutes is n, and n is more than or equal to 21 and is an odd number.

Exemplarily, the rotating shaft has a first shaft end and a second shaft end, and the mounting bracket includes a first bracket body and a second bracket body, the first bracket body is fixedly connected with the first shaft end, and the second bracket body is fixedly connected with the second shaft end.

For example, the adapter is disposed on the first frame body and is adjustable along the length direction of the first frame body, or the adapter is disposed on the second frame body and is adjustable along the length direction of the second frame body.

The adapter may include a first adapter disposed on the first frame body and adjustable along a length direction of the first frame body, and a second adapter disposed on the second frame body and adjustable along a length direction of the second frame body.

Illustratively, the seat cushion has an inclination angle β with respect to the horizontal, β being 0 ° to 20 °.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail embodiments of the present invention with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings, like reference numbers generally represent like parts or steps.

FIG. 1 is a block diagram of a knee rehabilitation training device according to an embodiment of the present invention;

FIG. 2 is an exploded view of the knee rehabilitation training device of FIG. 1;

FIG. 3 is an exploded view of a knee adapter of the knee rehabilitation training device of FIG. 1;

FIG. 4 is an exploded view of a drive motor of the knee rehabilitation training device of FIG. 1;

fig. 5 is an internal structural view of a driving motor of the knee joint rehabilitation training apparatus of fig. 1;

FIG. 6 is a perspective view of the stator of FIG. 4;

FIG. 7 is a front view of the stator of FIG. 4;

fig. 8 is a sectional view a-a in fig. 7.

Wherein the reference symbols are

10-seat

11-support frame

111-bottom frame

112-top frame

113-middle vertical frame

114-rear vertical frame

12-cushion

121-middle part gap

20-Knee Joint adapter

21-mounting frame

211-first frame

212-second frame

213-third frame body

22-adapter

221-first adapter

222-second adapter

23-sliding block

24-adjusting knob

30-driving motor

31-rotating shaft

3101-first axial end

3102-second axle end

311-axle body

312 support

313-surface paster body

314-support space

315-magnet steel

32-outer cover

33-stator

331-chute

34-bearing end cover

35-bearing gland

36-sealing end cover

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, exemplary embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a subset of embodiments of the invention and not all embodiments of the invention, with the understanding that the invention is not limited to the example embodiments described herein. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the invention described herein without inventive step, shall fall within the scope of protection of the invention.

As shown in fig. 1 and 2, the knee joint rehabilitation training device provided by the present invention includes a seat 10, a knee joint adapter 20, and a driving motor 30.

Seat 10 is used for supplying the rehabilitation training person to take a seat, seat 10 includes support frame 11 and sets up the cushion 12 on support frame 11, and support frame 11 can include bottom support body 111, top support body 112, middle part erects frame 113 and rear portion and erects frame 114, and bottom support body 111 wholly is the I shape, can install the gyro wheel in the position at four angles on bottom support body 111 to conveniently move whole knee joint rehabilitation training device, top support body 112 is the platelike, and middle part erects frame 113 can be the column. The seat cushion 12 is fixed on the top frame body 112, and the seat cushion 12 has a middle gap 121 in the front position of the support frame 11, the middle gap 121 can be V-shaped, and the seat cushion 12 can be provided with a left bandage and a right bandage, so as to fix the rehabilitation trainer.

Referring to fig. 3, the knee joint adaptor 20 includes a mounting frame 21 and an adaptor member 22, and the adaptor member 22 is detachably mounted on the mounting frame 21. The mounting frame 21 may include a first frame 211 and a second frame 212, the first frame 211 and the second frame 212 may be disposed in parallel, and the first frame 211 and the second frame 212 are connected by a third frame 213. As an exemplary embodiment, the adaptor 22 includes a first adaptor 221 and a second adaptor 222, the first adaptor 221 may be adjustable along a length direction of the first housing 211 by means of a slider 23 and an adjustment knob 24 provided on the first housing 211, the slider 23 and the adjustment knob 24 may be regarded as a detachable structure of the first adaptor 221, and the detachable structure is not limited to a combination of the slider 23 and the adjustment knob 24. The second adapter 222 is disposed on the second frame 212 and adjustable along the length direction of the second frame 212, and the detachable structure of the second adapter 222 is the same as the first adapter 221, which will not be described herein.

Driving motor 30 sets up in middle part breach 121 department, combine to refer to and draw together figure 4, driving motor 30 has pivot 31, mounting bracket 21 is fixed on pivot 31, in order to rotate and then drive adapter 22 along with pivot 31, because mounting bracket 21 snap-on of installation adapter 22 is on driving motor 30's pivot 31, and driving motor 30 sets up the middle part breach 121 department at cushion 12, thereby it directly drives the structure to place and the motor in the middle of the power supply to have formed, not only can two side training and transmission simple, mechanical transmission error has been reduced, conveniently carry out fine control.

As shown in fig. 5, the shaft 31 has a first shaft end 3101 and a second shaft end 3102, and it should be understood that when training on both sides simultaneously, the first frame body 211 is fixedly connected to the first shaft end 3101 and the second frame body 212 is fixedly connected to the second shaft end 3102.

With combined reference to fig. 4 to 8, the driving motor 30 further has a housing 32 and a stator 33 fixed in the housing 32, and inclined grooves 331 for placing coils are circumferentially arranged on an inner wall of the stator 33, and the inclined grooves 331 have an inclination angle α with respect to an axial direction of the stator 33, where α is 3 ° -12 °, specifically, α may be 3 °, 6 °, 9 °, and 12 °, and based on such a structure, not only embedding of coil windings is facilitated, but also harmonic electromotive force generated by tooth harmonic magnetic fields can be attenuated, thereby attenuating additional torque caused by these harmonic magnetic fields and reducing electromagnetic vibration and noise.

Further, the rotating shaft 31 includes a shaft body 311, a supporting body 312 and a surface body 313, the first shaft end 3101 and the second shaft end 3102 are respectively located at the left end and the right end of the shaft body 311, the surface body 313 is annularly arranged at the periphery of the shaft body 311 through the supporting body 312, a magnetic steel 315 is arranged on the surface body 313, a supporting space 314 is formed between the shaft body 311 and the surface body 313, the supporting body 312 extends radially outwards from the middle of the shaft body 311 to divide the supporting space 314 into a left part and a right part, and bearings can be arranged in the left part and the right part through a bearing end cover 34, a bearing gland 35 and a sealing end cover 36 so as to form a double-sided bearing supporting structure. With such a structure, the driving motor 30 can output in both directions, thereby facilitating simultaneous bilateral training.

Further, the magnetic steel 315 has a first axial length L1, and the stator 33 has a second axial length L2, L1-L2 > 10% × L2. Therefore, the driving motor 30 can run at ultra-low speed, and the lowest rotating speed can reach 0.0167 r/min, thereby being more beneficial to the fine control of rehabilitation training.

Further, the assembly concentricity deviation between the stator 33 and the rotating shaft 31 is < 0.02 mm. Therefore, the fluctuation of the output torque of the driving motor 30 can be reduced, the stable operation of the driving motor 30 can be ensured, and the strain rehabilitation trainers can be avoided.

Further, the proportion of the coil occupying the space in the inclined groove 331 after being placed in the inclined groove 331 is defined as the full rate of the groove, and the full rate of the groove is more than 70%. Therefore, the temperature rise of the coil winding can be reduced, the proportion of effective materials can be effectively improved, and the material cost of the driving motor 30 is reduced.

Furthermore, the number of the inclined grooves 331 is n, and n is not less than 21 and is an odd number. Compared with the conventional driving motor which only has four poles or eight poles, the driving motor 30 can have more than twenty poles, the number of the inclined grooves 331 is odd, the least common multiple of the inclined grooves is larger, and the subdivided fractions of one circle are more opposite, so that the driving motor 30 has low-speed stable performance.

In an embodiment not shown, there may be only one adapter 22, and one adapter 22 is provided on the first frame 211 to be adjustable in a length direction of the first frame 211, or one adapter 22 is provided on the second frame 212 to be adjustable in a length direction of the second frame 212. One adapter 22 is provided for unilateral training.

Referring again to fig. 1, the seat cushion 12 has an angle of inclination β with respect to the horizontal, β being 0 ° -20 °, β being for example 0 °, 10 °, 13 °, 20 °, etc., based on the inclined seat cushion 12 arrangement, the rehabilitation trainer is more comfortable in use, has a low center of gravity, and the device is more stable.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "left", "right", "rear", "horizontal", etc. is usually based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the scope of the present invention.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe the spatial relationship of one or more components or features shown in the figures to other components or features. It is to be understood that the spatially relative terms are intended to encompass not only the orientation of the component as depicted in the figures, but also different orientations of the component in use or operation. For example, if an element in the drawings is turned over in its entirety, the articles "over" or "on" other elements or features will include the articles "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". Further, these components or features may also be positioned at various other angles (e.g., rotated 90 degrees or other angles), all of which are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The present invention has been illustrated by the above embodiments, but it should be understood that the above embodiments are for illustrative and descriptive purposes only and are not intended to limit the invention to the scope of the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present invention, which variations and modifications are within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a knee joint rehabilitation training device, includes seat, knee joint adapter and driving motor, the seat include the support frame and set up in cushion on the support frame, its characterized in that:

the cushion is provided with a middle gap in the front of the support frame;

the knee joint adapter comprises a mounting frame and an adapting piece, and the adapting piece is detachably arranged on the mounting frame;

the driving motor is arranged at the notch of the middle part, the driving motor is provided with a rotating shaft, and the mounting frame is fixed on the rotating shaft so as to be capable of rotating along with the rotating shaft to further drive the adapting piece.

2. The knee joint rehabilitation training device according to claim 1, wherein the driving motor further has a housing and a stator fixed in the housing, the stator having a chute for placing a coil circumferentially arranged on an inner wall thereof, the chute having an inclination angle α of 3 ° -12 ° with respect to an axial direction of the stator.

3. The knee joint rehabilitation training device according to claim 2, wherein the rotating shaft comprises a shaft body, a supporting body and a surface patch, the surface patch is arranged on the periphery of the shaft body through the supporting body, magnetic steel is arranged on the surface patch, a supporting space is formed between the shaft body and the surface patch, and the supporting body extends outwards from the middle of the shaft body in the radial direction to divide the supporting space into a left part and a right part so as to form a bilateral bearing supporting structure.

4. The knee rehabilitation training device of claim 3, wherein the magnetic steel has a first axial length L1, and the stator has a second axial length L2, L1-L2 > 10% xL 2.

5. The knee joint rehabilitation training device of claim 3, wherein the assembly concentricity between the stator and the rotating shaft is deviated by < 0.02 mm.

6. The knee joint rehabilitation training device according to claim 3, wherein a ratio of the coil occupying the space in the chute after being placed in the chute is defined as a slot-full rate, and the slot-full rate is greater than 70%.

7. The knee joint rehabilitation training device according to claim 3, wherein the number of the inclined grooves is n, and n is not less than 21 and is an odd number.

8. The knee joint rehabilitation training device according to any one of claims 1-7, wherein the rotating shaft has a first shaft end and a second shaft end, the mounting frame comprises a first frame body and a second frame body, the first frame body is fixedly connected with the first shaft end, and the second frame body is fixedly connected with the second shaft end.

9. The knee rehabilitation training device according to claim 8, wherein the adapter is provided on the first frame body to be adjustable in a length direction of the first frame body, or the adapter is provided on the second frame body to be adjustable in a length direction of the second frame body.

10. The knee rehabilitation training device of claim 8, wherein the adapter includes a first adapter and a second adapter, the first adapter being disposed on the first frame body adjustable along a length of the first frame body, the second adapter being disposed on the second frame body adjustable along a length of the second frame body.

11. The knee rehabilitation training device according to any of claims 1-7, wherein the seat cushion has an inclination angle β with respect to a horizontal plane, β being between 0 ° and 20 °.