阅读说明：本技术 一种膝关节训练器 (Knee joint training ware ) 是由 牛留栓 牛栓柱 武高峰 王伟锋 于 2019-11-20 设计创作，主要内容包括：本发明涉及一种膝关节训练器,包括底架、座椅、脚托摆臂组件和动力单元,所述动力单元设置在座椅下方且与脚托摆臂组件传动连接,所述脚托摆臂组件由摆臂轴、摆臂杆和脚托组成,所述动力单元包括电机组件和磁粉组件,所述电机组件由电机、动力支座、离合器和过渡轴组成,所述磁粉组件由磁粉支座、磁粉制动器和传动轴组成。本发明的目的在于解决现有膝关节训练器无法进行被动训练且结构过大、不易布设的问题,提供一种膝关节训练器。(The invention relates to a knee joint trainer which comprises an underframe, a seat, a foot support swing arm assembly and a power unit, wherein the power unit is arranged below the seat and is in transmission connection with the foot support swing arm assembly, the foot support swing arm assembly consists of a swing arm shaft, a swing arm rod and a foot support, the power unit comprises a motor assembly and a magnetic powder assembly, the motor assembly consists of a motor, a power support, a clutch and a transition shaft, and the magnetic powder assembly consists of a magnetic powder support, a magnetic powder brake and a transmission shaft. The invention aims to solve the problems that the existing knee joint trainer cannot perform passive training, is overlarge in structure and is not easy to lay, and provides a knee joint trainer.)

1. A knee joint trainer comprises an underframe (1), a seat (2), a foot support swing arm assembly and a power unit, wherein the seat (2) is arranged on the underframe (1), the foot support swing arm assembly is arranged at the front end of the seat (2), the power unit is arranged below the seat (2) and is in transmission connection with the foot support swing arm assembly, the knee joint trainer is characterized in that the foot support swing arm assembly consists of a swing arm shaft (3), a swing arm rod (4) and a foot support (5), the swing arm shaft (3) is positioned at the front end of the seat (2) and is in rotation connection with the seat (2), the upper end of the swing arm rod (4) is fixedly sleeved on the swing arm shaft (3), and the lower end of the swing arm rod is fixedly provided with the foot support (5);

the power unit comprises a motor component and a magnetic powder component, the motor component comprises a motor (6), a power support (7), a clutch (8) and a transition shaft (9), the power support (7) is vertically and fixedly arranged on the chassis (1), the motor (6) is fixedly arranged on one side of the power support (7), the clutch (8) is fixedly arranged on the other side of the power support (7), the transition shaft (9) is arranged on one side of the clutch (8) far away from the motor (6), a rotating shaft of the motor (6) penetrates through the power support (7) to be in transmission connection with the clutch (8) and the transition shaft (9), a yoke coil of the clutch (8) is fixedly arranged on the power support (7), an armature of the clutch (8) is in transmission connection with the transition shaft (9), and the magnetic powder component comprises a magnetic powder support (10), a magnetic powder brake (11) and a transmission shaft (12), magnetic powder support (10) vertical fixed setting just corresponds the setting with power support (7) parallel on chassis (1), one side of power support (7) is kept away from in magnetic powder support (10) to fixed the setting in magnetic powder brake (11), transmission shaft (12) registrate is on magnetic powder brake (11), and transmission shaft (12) one end is connected with brake disc fixed connection, the other end and swing arm axle (3) transmission of clutch (8).

2. The knee joint trainer according to claim 1, wherein a secondary transmission assembly is arranged between the foot support swing arm assembly and the power unit, the secondary transmission assembly is arranged at the front end of the power unit and consists of a secondary transmission bracket (13), a secondary transmission shaft (14) and an angle sensor (15), the secondary transmission bracket (13) is vertically and fixedly arranged on the base frame (1), the secondary transmission shaft (14) is transversely and rotatably arranged on the upper part of the secondary transmission bracket (13), the secondary transmission shaft (14) is respectively in transmission connection with the transmission shaft (12) and the swing arm shaft (3), and the angle sensor (15) is arranged at one end of the secondary transmission shaft (14) and is connected with the motor (6).

3. A knee joint training device according to claim 2, wherein the end of the secondary transmission shaft (14) remote from the angle sensor (15) is fixedly sleeved with a first transmission pulley (16) and the middle part is fixedly sleeved with a first synchronous pulley (17).

4. A knee joint training device according to claim 3, wherein a second driving pulley (18) is fixed to the end of the driving shaft (12) remote from the clutch (8), and the second driving pulley (18) is in driving connection with the first driving pulley (16) through a driving belt.

5. The knee joint trainer according to claim 3, wherein a second synchronous pulley (19) is fixedly sleeved in the middle of the swing arm shaft (3), and the second synchronous pulley (19) is in transmission connection with the first synchronous pulley (17) through a synchronous belt.

6. The knee joint trainer according to claim 1, wherein the foot supports (5) are composed of positioning sleeves (501), connecting rods (502), fixed foot supports (503) and movable foot supports (504), the positioning sleeves (501) are sleeved on the lower portion of the swing arm rod (4), the number of the connecting rods (502), the fixed foot supports (503) and the movable foot supports (504) is two, the two connecting rods (502) are fixedly arranged on two sides of the positioning sleeves (501), the two fixed foot supports (503) are respectively and symmetrically fixedly arranged on the outer sides of the front ends of the two connecting rods (502), and the two movable foot supports (504) are respectively and slidably sleeved on the rear ends of the two connecting rods (502).

7. The knee joint trainer according to claim 6, wherein the rear end array of the connecting rod (502) is provided with a plurality of first positioning holes, and the position where the movable foot support (504) is sleeved with the connecting rod (502) is provided with a first elastic pin which is positioned in one of the first positioning holes.

8. The knee joint trainer according to claim 6, wherein a plurality of second positioning holes are formed in the lower array of the swing arm rod (4), and a second elastic pin is arranged at the position where the positioning sleeve (501) is sleeved with the swing arm rod (4) and is positioned in one of the second positioning holes.

9. The knee joint trainer according to claim 1, wherein the front part of the lower surface of the base frame (1) is provided with two directional wheels (20), the rear part of the lower surface of the base frame is provided with two universal wheels (21), the outer sides of the two universal wheels (21) are provided with ground feet (22), and the ground feet (22) are in threaded connection with the base frame (1).

10. Knee trainer according to claim 1, wherein the seat (2) is provided with hand-held guards (23) on both sides.

Technical Field

The invention relates to the technical field of medical rehabilitation instruments, in particular to a knee joint trainer.

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 the current rehabilitation medical field, manual assistance or equipment-assisted training is mostly adopted for lower limb hemiplegia patients caused by stroke, and when the manual assistance training is adopted, the labor intensity of medical workers is high, and the expected rehabilitation effect is difficult to achieve; when adopting equipment training aiding, most equipment do not possess initiative training, passive training simultaneously to control is complicated, is difficult to satisfy the rehabilitation training demand of disease and most equipment when carrying out the initiative training, and the nothing is satisfied and is good for the limb and drive the limb of suffering from and train, can't satisfy hemiplegia patient's rehabilitation demand.

Therefore, how to provide a device which can perform active training, passive training and assisted training and simultaneously satisfy the requirement that the healthy limb drives the affected limb to perform rehabilitation training when performing active training is a technical problem which needs to be solved by technical personnel in the field at present.

Chinese patent CN206081489U discloses an air-resistance type knee joint flexion and extension rehabilitation training device, which comprises a training frame and an air cylinder assembly, wherein an air hole is arranged on a base, and the outer end of the air hole is connected with an air compressor; chinese patent CN206304090U discloses a "transfer knee joint flexion and extension rehabilitation training device using compressed air damping", which comprises a training frame, a seat, a bidirectional damping cylinder and a cylinder stroke measuring sensor, wherein the bidirectional damping cylinder is connected with an external air source air compressor through an air pipe. Not only all can't realize passive training in these two patents to all adopt air compressor to provide damping power during these two patents are initiatively trained and are helped the training, need peripheral hardware air compressor, be unfavorable for laying, and air compressor noise is great, is unfavorable for the rest and is recovered.

Disclosure of Invention

The invention aims to solve the problems that the existing knee joint trainer cannot perform passive training, is overlarge in structure and is not easy to lay, and provides a knee joint trainer.

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

a knee joint trainer comprises a base frame, a seat, a foot support swing arm assembly and a power unit, wherein the seat is arranged on the base frame, the foot support swing arm assembly is arranged at the front end of the seat, the power unit is arranged below the seat and is in transmission connection with the foot support swing arm assembly, the foot support swing arm assembly consists of a swing arm shaft, a swing arm rod and a foot support, the swing arm shaft is positioned at the front end of the seat and is in rotary connection with the seat, the upper end of the swing arm rod is fixedly sleeved on the swing arm shaft, and the lower end of the swing arm rod is fixedly provided with the foot support;

the power unit comprises a motor component and a magnetic powder component, the motor component comprises a motor, a power support, a clutch and a transition shaft, the power support is vertically and fixedly arranged on the chassis, the motor and the clutch are fixedly arranged on one side of the power support, the other side of the power support is fixedly arranged on the other side of the power support, the transition shaft is arranged on one side of the clutch far away from the motor, a rotating shaft of the motor penetrates through the power support to be connected with the clutch and the transition shaft in a transmission way, a yoke coil of the clutch is fixedly arranged on the power support, an armature of the clutch is connected with the transition shaft in a transmission way, the magnetic powder component comprises the magnetic powder support, the magnetic powder support is vertically and fixedly arranged on the chassis and corresponds to the power support in parallel, the magnetic powder brake is fixedly arranged on one side of the magnetic powder support far away from the power support, one end of the transmission shaft is fixedly connected with a brake disc of the clutch, and the other end of the transmission shaft is in transmission connection with the swing arm shaft.

Further, be provided with the second grade transmission subassembly between foot support swing arm subassembly and the power unit, the second grade transmission subassembly sets up in the power unit front end, and the second grade transmission subassembly comprises second grade transmission support, second grade transmission shaft and angle sensor, the vertical fixed setting of second grade transmission support is on the chassis, the horizontal rotation of second grade transmission shaft sets up on second grade transmission support upper portion, and the second grade transmission shaft is connected with transmission shaft and swing arm shaft transmission respectively, angle sensor sets up the one end at the second grade transmission shaft and is connected with the motor.

Furthermore, a first transmission belt wheel is fixedly sleeved at one end, far away from the angle sensor, of the secondary transmission shaft, and a first synchronous belt wheel is fixedly sleeved at the middle part of the secondary transmission shaft.

Furthermore, a second driving belt wheel is fixedly sleeved at one end of the transmission shaft, which is far away from the clutch, and the second driving belt wheel is in driving connection with the first driving belt wheel through a driving belt.

Furthermore, a second synchronous belt wheel is fixedly sleeved in the middle of the swing arm shaft and is in transmission connection with the first synchronous belt wheel through a synchronous belt.

Further, the foot holds in the palm and holds in the palm by position sleeve, connecting rod, fixed foot and activity foot and constitute, the position sleeve registrates in swing arm pole lower part, the quantity that connecting rod, fixed foot held in the palm and activity foot held in the palm is two, and two connecting rods are fixed to be set up in the position sleeve both sides, two fixed foot holds in the palm the fixed front end outside that sets up at two connecting rods of symmetry respectively, two activity foot holds in the palm the rear end of sliding sleeve closure at two connecting rods respectively.

Furthermore, a plurality of first positioning holes are formed in the rear end array of the connecting rod, a first elastic pin is arranged at the position where the movable foot support is sleeved with the connecting rod, and the first elastic pin is located in one of the first positioning holes.

Furthermore, a plurality of second positioning holes are formed in the lower portion of the swing arm rod in an array mode, a second elastic pin is arranged at the position where the positioning sleeve is sleeved with the swing arm rod, and the second elastic pin is located in one of the second positioning holes.

Furthermore, the front part of the lower surface of the underframe is provided with two directional wheels, the rear part of the lower surface of the underframe is provided with two universal wheels, the outer sides of the two universal wheels are provided with ground feet, and the ground feet are in threaded connection with the underframe.

Furthermore, hand-held guardrails are arranged on two sides of the seat.

Through the technical scheme, the invention has the beneficial effects that:

the power unit comprises a motor assembly and a magnetic powder assembly, wherein the motor assembly is provided with a clutch, and a transmission shaft is connected with and separated from a motor through the clutch, so that the power unit realizes active training, passive training and assisted training.

The motor assembly is connected with the magnetic powder assembly, damping force is provided through the magnetic powder brake during rehabilitation training, an external air compressor is not needed, and meanwhile, the directional wheel, the universal wheel and the ground feet are arranged below the motor assembly, so that the motor assembly is convenient to move, arrange and fix during use.

Drawings

Fig. 1 is a schematic structural view of a knee joint trainer according to the invention.

Fig. 2 is a side view of a knee trainer of the invention.

Fig. 3 is a structural sectional view of a knee joint trainer according to the invention.

Fig. 4 is a schematic structural diagram of a power unit of the knee joint trainer of the invention.

FIG. 5 is a sectional view showing the construction of a power unit of the knee joint trainer according to the present invention.

FIG. 6 is a schematic diagram of a two-stage transmission assembly of the knee trainer of the invention.

Fig. 7 is a schematic structural view of a swing arm shaft and a swing arm lever of the knee joint trainer according to the invention.

FIG. 8 is a sectional view showing the construction of a swing arm shaft and a swing arm lever of the knee joint training device of the present invention.

Fig. 9 is a schematic structural view of a foot rest of the knee joint trainer according to the invention.

The reference numbers in the drawings are as follows: the seat is characterized in that the seat comprises a base frame 1, a seat 2, a swing arm shaft 3, a swing arm rod 4, a foot support 5, a motor 6, a power support 7, a clutch 8, a transition shaft 9, a magnetic powder support 10, a magnetic powder brake 11, a transmission shaft 12, a secondary transmission support 13, a secondary transmission shaft 14, an angle sensor 15, a first transmission belt wheel 16, a first synchronous belt wheel 17, a second transmission belt wheel 18, a second synchronous belt wheel 19, a directional wheel 20, a universal wheel 21, a ground foot 22, a hand-held guardrail 23, a positioning sleeve 501, a connecting rod 502, a fixed foot support 503 and a movable foot support 504.

Detailed Description

The invention is further described with reference to the following figures and detailed description:

as shown in fig. 1 to 9, a knee joint trainer comprises an underframe 1, a seat 2, a foot support swing arm assembly and a power unit, wherein the seat 2 is arranged on the underframe 1, the foot support swing arm assembly is arranged at the front end of the seat 2, the power unit is arranged below the seat 2 and is in transmission connection with the foot support swing arm assembly, the foot support swing arm assembly is composed of a swing arm shaft 3, a swing arm rod 4 and a foot support 5, the swing arm shaft 3 is positioned at the front end of the seat 2 and is in rotational connection with the seat 2, the upper end of the swing arm rod 4 is fixedly sleeved on the swing arm shaft 3, and the lower end of the swing arm rod is fixedly provided with the foot support 5;

the power unit includes motor element and magnetic powder subassembly, motor element comprises motor 6, power support 7, clutch 8 and transition axle 9, the vertical fixed setting of power support 7 is on chassis 1, and fixed motor 6, the fixed clutch 8 that is provided with of opposite side of being provided with in power support 7 one side, transition axle 9 sets up the one side of keeping away from motor 6 at clutch 8, and power support 7 and clutch 8 and the transmission of transition axle 9 are passed in the pivot of motor 6 and are connected, the fixed setting of yoke coil of clutch 8 is on power support 7, the armature of clutch 8 is connected with the transmission of transition axle 9, magnetic powder subassembly comprises magnetic powder support 10, magnetic powder brake 11 and transmission shaft 12, the vertical fixed setting of magnetic powder support 10 is on chassis 1 and corresponds the setting with power support 7 parallel, magnetic powder brake 11 is fixed to be set up the one side of keeping away from power support 7 at magnetic powder support 10, the transmission shaft 12 is sleeved on the magnetic powder brake 11, one end of the transmission shaft 12 is fixedly connected with a brake disc of the clutch 8, and the other end of the transmission shaft 12 is in transmission connection with the swing arm shaft 3.

In order to enable the power unit to drive the foot support swing arm assembly to rotate, a secondary transmission assembly is arranged between the foot support swing arm assembly and the power unit and is arranged at the front end of the power unit, the secondary transmission assembly is composed of a secondary transmission support 13, a secondary transmission shaft 14 and an angle sensor 15, the secondary transmission support 13 is vertically and fixedly arranged on the bottom frame 1, the secondary transmission shaft 14 transversely rotates and is arranged on the upper portion of the secondary transmission support 13, the secondary transmission shaft 14 is in transmission connection with the transmission shaft 12 and the swing arm shaft 3 respectively, and the angle sensor 15 is arranged at one end of the secondary transmission shaft 14 and is connected with the motor 6.

In order to optimize the product structure, in this embodiment, a first driving pulley 16 is fixedly sleeved on one end of the secondary driving shaft 14 far away from the angle sensor 15, and a first synchronous pulley 17 is fixedly sleeved on the middle part of the secondary driving shaft; a second transmission belt wheel 18 is fixedly sleeved at one end of the transmission shaft 12 far away from the clutch 8, and the second transmission belt wheel 18 is in transmission connection with the first transmission belt wheel 16 through a transmission belt; and a second synchronous belt wheel 19 is fixedly sleeved in the middle of the swing arm shaft 3, and the second synchronous belt wheel 19 is in transmission connection with the first synchronous belt wheel 17 through a synchronous belt.

In order to enable the invention to be suitable for patients with different body shapes, in the embodiment, the foot supports 5 are composed of positioning sleeves 501, connecting rods 502, fixed foot supports 503 and movable foot supports 504, the positioning sleeves 501 are sleeved at the lower parts of the swing arm rods 4, the number of the connecting rods 502, the fixed foot supports 503 and the movable foot supports 504 is two, the two connecting rods 502 are fixedly arranged at two sides of the positioning sleeves 501, the two fixed foot supports 503 are respectively and symmetrically fixedly arranged at the outer sides of the front ends of the two connecting rods 502, and the two movable foot supports 504 are respectively and slidably sleeved at the rear ends of the two connecting rods 502; a plurality of first positioning holes are formed in the rear end of the connecting rod 502 in an array manner, a first elastic pin is arranged at the position where the movable foot support 504 and the connecting rod 502 are sleeved, and the first elastic pin is positioned in one of the first positioning holes; a plurality of second positioning holes are formed in the lower portion of the swing arm rod 4 in an array mode, a second elastic pin is arranged at the position where the positioning sleeve 501 is sleeved with the swing arm rod 4, and the second elastic pin is located in one of the second positioning holes.

In order to move the invention conveniently, the front part of the lower surface of the underframe 1 is provided with two directional wheels 20, the rear part of the lower surface of the underframe 1 is provided with two universal wheels 21, the outer sides of the two universal wheels 21 are both provided with a ground foot 22, and the ground foot 22 is in threaded connection with the underframe 1.

In order to make the patient conveniently exert oneself and prevent that the patient from falling from seat 2 when carrying out the rehabilitation training, in this embodiment, seat 2 both sides all are provided with and hold guardrail 23.

In the embodiment, the motor 6 is a direct current brushless motor with the model number of 86BLD90-2418GU & GU200RT manufactured by Guizhou Yutian motor Co., Ltd, the clutch 8 is an electromagnetic brake with the model number of DLD5-80 manufactured by Anhui Hainan clutch Co., Ltd, the magnetic powder brake 11 is a magnetic powder brake with the model number of FZ16K-YD manufactured by Lanling electro-mechanical (Jiangsu) Co., Ltd, and the angle sensor 15 is an angle sensor with the model number of Tianyu constant creation and the model number of MCJS.

The power unit comprises a motor component and a magnetic powder component, wherein the motor component is provided with a clutch 8, and a transmission shaft 12 is connected with and separated from a motor 6 through the clutch 8, so that the active training, the passive training and the assisted training are realized.

During training, the patient sits on the seat 2, the foot is placed between the fixed foot support 503 and the movable foot support 504, in the state of active training of the patient, the armature of the clutch 8 is separated from the brake disc, the motor 6 is separated from the transmission shaft 12, the foot of the patient is actively lifted up to be trained, the magnetic powder brake 11 is controlled to provide damping required by the training of the patient, when the active training of the patient is performed, the foot drives the foot support 5 to be lifted up, the swing arm shaft 3 is rotated, the secondary transmission shaft 14 is rotated through the second synchronous belt pulley 19, the synchronous belt and the first synchronous belt pulley 17, and the angle sensor 15 can measure the rotation angle. In the passive training state of a patient, an armature of the clutch 8 is attracted with a brake disc, the magnetic powder brake 11 is controlled not to provide damping, at the moment, the motor 6 is connected with the transmission shaft 12, the second transmission belt wheel 18 is driven to rotate through the rotation shaft 12 under the driving of the motor 6, the second transmission belt wheel 18 drives the first transmission belt wheel 16 to rotate through the transmission belt, so that the second transmission shaft 14 is driven to rotate, namely the first synchronous belt wheel 17 is driven to rotate, the first synchronous belt wheel 17 drives the second synchronous belt wheel 19 to rotate through the synchronous belt, and then the rotation of the swing arm shaft 3 and the swinging exercise of the leg of a patient are realized; during the assisted training, the patient firstly selects the active training mode, and in a set time, if the patient fails to complete the training item, namely the data detected by the angle sensor 15 does not reach a preset value, the clutch 8 can be attracted to enter the passive training state.

The motor assembly is connected with the magnetic powder assembly, damping force is provided by the magnetic powder brake 11 during rehabilitation training, an external air compressor is not needed, and meanwhile, the directional wheel 20, the universal wheel 21 and the ground feet 22 are arranged below the motor assembly, so that the motor assembly is convenient to move, arrange and fix during use.

In addition to the technical features described in the specification, the technology is known to those skilled in the art.

The above-described embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the invention, so that equivalent changes or modifications in the structure, features and principles described in the present invention should be included in the claims of the present invention.