CN110755800B - Knee joint trainer - Google Patents
Knee joint trainer Download PDFInfo
- Publication number
- CN110755800B CN110755800B CN201911142097.9A CN201911142097A CN110755800B CN 110755800 B CN110755800 B CN 110755800B CN 201911142097 A CN201911142097 A CN 201911142097A CN 110755800 B CN110755800 B CN 110755800B
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- China
- Prior art keywords
- swing arm
- foot rest
- shaft
- support
- magnetic powder
- Prior art date
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- 210000000629 knee joint Anatomy 0.000 title claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims abstract description 56
- 239000006247 magnetic powder Substances 0.000 claims abstract description 38
- 230000007704 transition Effects 0.000 claims abstract description 14
- 208000032370 Secondary transmission Diseases 0.000 claims description 27
- 230000001360 synchronised effect Effects 0.000 claims description 24
- 238000013016 damping Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 210000003414 extremity Anatomy 0.000 description 4
- 206010019468 Hemiplegia Diseases 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 208000006011 Stroke Diseases 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 206010008190 Cerebrovascular accident Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002490 cerebral effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000004217 heart function Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 210000002414 leg Anatomy 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/00192—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using resistance provided by magnetic means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H1/00—Apparatus for passive exercising; Vibrating apparatus; Chiropractic devices, e.g. body impacting devices, external devices for briefly extending or aligning unbroken bones
- A61H1/02—Stretching or bending or torsioning apparatus for exercising
- A61H1/0237—Stretching or bending or torsioning apparatus for exercising for the lower limbs
- A61H1/024—Knee
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/00178—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices for active exercising, the apparatus being also usable for passive exercising
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B23/00—Exercising apparatus specially adapted for particular parts of the body
- A63B23/035—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
- A63B23/04—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs
- A63B23/0494—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs primarily by articulating the knee joints
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/01—Constructive details
- A61H2201/0119—Support for the device
- A61H2201/0138—Support for the device incorporated in furniture
- A61H2201/0149—Seat or chair
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/12—Driving means
- A61H2201/1207—Driving means with electric or magnetic drive
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/14—Special force transmission means, i.e. between the driving means and the interface with the user
- A61H2201/1445—Overrunning clutches; One-way clutches
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/16—Physical interface with patient
- A61H2201/1602—Physical interface with patient kind of interface, e.g. head rest, knee support or lumbar support
- A61H2201/164—Feet or leg, e.g. pedal
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2220/00—Measuring of physical parameters relating to sporting activity
- A63B2220/18—Inclination, slope or curvature
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Epidemiology (AREA)
- Pain & Pain Management (AREA)
- Rehabilitation Therapy (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Rehabilitation Tools (AREA)
Abstract
The invention relates to a knee joint trainer, which comprises a chassis, a seat, a foot rest swing arm assembly and a power unit, wherein the power unit is arranged below the seat and is in transmission connection with the foot rest swing arm assembly, the foot rest swing arm assembly consists of a swing arm shaft, a swing arm rod and a foot rest, 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 conventional knee joint trainer cannot perform passive training, has an oversized structure and is difficult to lay, and provides a knee joint trainer.
Description
Technical Field
The invention relates to the technical field of medical rehabilitation instruments, in particular to a knee joint trainer.
Background
The rehabilitation therapy is a new therapeutic discipline for promoting the rehabilitation of the heart functions of patients and disabled persons, is a new technical specialty, and aims to enable people to recover daily life, study, work and labor as well as social life capacity as much as possible, integrate into society and improve life quality.
In the current rehabilitation medicine field, manual assistance or equipment assistance training is mostly adopted for patients with lower limb hemiplegia caused by cerebral apoplexy, and when the manual assistance training is adopted, the labor intensity of medical staff is high, and the expected rehabilitation effect is difficult to achieve; when adopting equipment to assist the training, most equipment does not possess active training, passive training simultaneously to control is complicated, is difficult to satisfy patient's rehabilitation training demand and most equipment when carrying out active training, does not satisfy the healthy limb and drives the suffering limb and train, can't satisfy hemiplegia patient's rehabilitation demand.
Therefore, how to provide a device capable of performing active training, passive training and power-assisted training, and simultaneously meeting the requirement of exercising limbs to drive affected limbs to perform rehabilitation training during active training is a technical problem that needs to be solved by those skilled in the art at present.
Chinese patent CN206081489U discloses an "air-blocking knee joint flexion and extension rehabilitation training device", which "comprises a training frame and a cylinder assembly" ", wherein an air hole is provided on the base, and the outer end of the air hole is connected with an air compressor"; chinese patent CN206304090U discloses "a knee joint flexion and extension rehabilitation training device employing compressed air damping", comprising 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 can passive training not be realized in these two patents to all adopt air compressor to provide damping power when these two patents initiative training and helping hand training, need peripheral hardware air compressor, be unfavorable for laying, and air compressor noise is great, be unfavorable for quiet heart rehabilitation.
Disclosure of Invention
The invention aims to solve the problems that the conventional knee joint trainer cannot perform passive training, has an oversized structure and is difficult to lay, and provides a knee joint trainer.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The knee joint trainer comprises a chassis, a seat, a foot rest swing arm assembly and a power unit, wherein the seat is arranged on the chassis, the foot rest 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 rest swing arm assembly, the foot rest swing arm assembly consists of a swing arm shaft, a swing arm rod and a foot rest, the swing arm shaft is positioned at the front end of the seat and is in rotation connection with the seat, and the upper end of the swing arm rod is fixedly sleeved on the upper end and the lower end of the swing arm shaft and is fixedly provided with the foot rest;
The power unit comprises a motor assembly and a magnetic powder assembly, the motor assembly is composed of a motor, a power support, a clutch and a transition shaft, the power support is vertically and fixedly arranged on a chassis, the motor is fixedly arranged on one side of the power support, the clutch is fixedly arranged on the other side of the power support, the transition shaft is arranged on one side of the clutch 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 mode, a magnet 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 mode, the magnetic powder assembly is composed of a magnetic powder support, a magnetic powder brake and a transmission shaft, the magnetic powder support is vertically and fixedly arranged on the chassis and corresponds to the power support in a parallel mode, the magnetic powder brake is fixedly arranged on one side, the transmission shaft is sleeved on the magnetic powder brake, 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 connected with a swing arm in a transmission mode.
Further, be provided with the second grade drive assembly between foot rest swing arm subassembly and the power pack, the second grade drive assembly sets up in the power pack front end, and the second grade drive assembly comprises second grade transmission support, second grade drive shaft and angle sensor, the vertical fixed setting of second grade transmission support is on the chassis, the horizontal rotation of second grade drive shaft sets up in second grade transmission support upper portion, and the second grade drive shaft is connected with transmission shaft and swing arm axle transmission respectively, angle sensor sets up in the one end of second grade drive shaft and is connected with the motor.
Further, one end of the secondary transmission shaft far away from the angle sensor is fixedly sleeved with a first transmission belt pulley, and the middle part of the secondary transmission shaft is fixedly sleeved with a first synchronous belt pulley.
Further, one end of the transmission shaft far away from the clutch is fixedly sleeved with a second transmission belt wheel, and the second transmission belt wheel is in transmission connection with the first transmission belt wheel through a transmission belt.
Further, a second synchronous pulley is fixedly sleeved at the middle part of the swing arm shaft, and the second synchronous pulley is in transmission connection with the first synchronous pulley through a synchronous belt.
Further, the foot rest comprises locating sleeve, connecting rod, fixed foot rest and activity foot rest, the locating sleeve cover is closed in swing arm pole lower part, the quantity of connecting rod, fixed foot rest and activity foot rest is two, and two connecting rods are fixed to be set up in the locating sleeve both sides, two fixed foot rest symmetry respectively fixed the setting in the front end outside of two connecting rods, two the activity foot rest is the slip cover respectively closes the rear end at two connecting rods.
Further, the connecting rod rear end array is provided with a plurality of first locating holes, movable foot rest and connecting rod nest department is provided with first bullet round pin, first bullet round pin is located one of them first locating hole.
Further, a plurality of second positioning holes are formed in the lower array of the swing arm rod, a second spring pin is arranged at the joint of the positioning sleeve and the swing arm rod, and the second spring pin is located in one of the second positioning holes.
Further, two orientation wheels are arranged at the front part of the lower surface of the underframe, two universal wheels are arranged at the rear part of the lower surface of the underframe, the outer sides of the two universal wheels are respectively provided with a foot margin, and the foot margins are in threaded connection with the underframe.
Further, the two sides of the seat are provided with hand-held guardrails.
Through the technical scheme, the invention has the beneficial effects that:
the power unit comprises a motor component and a magnetic powder component, wherein the motor component is provided with a clutch, and the connection and the separation of a transmission shaft and a motor are realized through the clutch, so that the power unit realizes active training, passive training and power-assisted training.
The motor component is connected with the magnetic powder component, 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 foot margin are arranged below the motor component, so that the motor component is convenient to move, arrange and fix during use.
Drawings
Fig. 1 is a schematic view of a knee joint trainer according to the present invention.
Fig. 2 is a side view of a knee joint trainer of the present invention.
Fig. 3 is a sectional view showing the structure of a knee joint trainer according to the present invention.
Fig. 4 is a schematic view showing the construction of a power unit of a knee joint trainer according to the present invention.
Fig. 5 is a sectional view showing the construction of a power unit of a knee joint trainer according to the present invention.
Fig. 6 is a schematic view of a secondary transmission assembly of a knee trainer in accordance with the present invention.
Fig. 7 is a schematic view of a swing arm shaft and a swing arm lever of a knee joint trainer according to the present invention.
Fig. 8 is a sectional view showing the structure of a swing arm shaft and a swing arm lever of a knee joint trainer according to the present invention.
Fig. 9 is a schematic view of a foot rest for a knee joint trainer according to the present invention.
The reference numerals in the drawings are: 1 is a chassis, 2 is a seat, 3 is a swinging arm shaft, 4 is a swinging arm rod, 5 is a foot rest, 6 is a motor, 7 is a power support, 8 is a clutch, 9 is a transition shaft, 10 is a magnetic powder support, 11 is a magnetic powder brake, 12 is a transmission shaft, 13 is a secondary transmission support, 14 is a secondary transmission shaft, 15 is an angle sensor, 16 is a first transmission belt wheel, 17 is a first synchronous belt wheel, 18 is a second transmission belt wheel, 19 is a second synchronous belt wheel, 20 is a directional wheel, 21 is a universal wheel, 22 is a foot margin, 23 is a hand-held guardrail, 501 is a positioning sleeve, 502 is a connecting rod, 503 is a fixed foot rest, and 504 is a movable foot rest.
Detailed Description
The invention is further described with reference to the drawings and detailed description which follow:
As shown in fig. 1-9, the knee joint trainer comprises a chassis 1, a seat 2, a foot rest swing arm assembly and a power unit, wherein the seat 2 is arranged on the chassis 1, the foot rest 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 rest swing arm assembly, the foot rest swing arm assembly consists of a swing arm shaft 3, a swing arm rod 4 and a foot rest 5, the swing arm shaft 3 is positioned at the front end of the seat 2 and is in rotary 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 rest 5;
The power unit comprises a motor assembly and a magnetic powder assembly, the motor assembly is composed of 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 a 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 magnetic 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, the magnetic powder assembly is composed of a magnetic powder support 10, a magnetic powder brake 11 and a transmission shaft 12, the magnetic powder support 10 is vertically and fixedly arranged on the chassis 1 and is correspondingly arranged in parallel with the power support 7, the magnetic powder brake 11 is fixedly arranged on one side of the magnetic powder support 10 far away from the power support 7, 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 is in transmission connection with a 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, the secondary transmission assembly is arranged at the front end of the power unit and consists 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 underframe 1, the secondary transmission shaft 14 is transversely arranged on the upper portion of the secondary transmission support 13 in a rotating mode, 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.
In order to optimize the product structure, in this embodiment, a first driving pulley 16 is fixedly sleeved at one end of the secondary driving shaft 14 far away from the angle sensor 15, and a first synchronous pulley 17 is fixedly sleeved at the middle part; a second driving belt pulley 18 is fixedly sleeved at one end of the driving shaft 12 far away from the clutch 8, and the second driving belt pulley 18 is in driving connection with the first driving belt pulley 16 through a driving belt; the middle part of the swing arm shaft 3 is fixedly sleeved with a second synchronous pulley 19, and the second synchronous pulley 19 is in transmission connection with the first synchronous pulley 17 through a synchronous belt.
In order to enable the invention to be used by patients with different shapes, in the embodiment, the foot rest 5 is composed of a positioning sleeve 501, a connecting rod 502, a fixed foot rest 503 and a movable foot rest 504, wherein the positioning sleeve 501 is sleeved at the lower part of the swing arm rod 4, the number of the connecting rod 502, the fixed foot rest 503 and the movable foot rest 504 is two, the two connecting rods 502 are fixedly arranged at two sides of the positioning sleeve 501, the two fixed foot rests 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 rests 504 are respectively and slidably sleeved at the rear ends of the two connecting rods 502; the rear end of the connecting rod 502 is provided with a plurality of first positioning holes in an array manner, a first spring pin is arranged at the sleeving position of the movable foot support 504 and the connecting rod 502, and the first spring pin is positioned in one of the first positioning holes; the lower array of swing arm pole 4 is provided with a plurality of second locating hole, locating sleeve 501 and swing arm pole 4 nest department is provided with the second bullet round pin, the second bullet round pin is located one of them second locating hole.
In order to facilitate the movement of the invention, the front part of the lower surface of the underframe 1 is provided with two directional wheels 20, the rear part is provided with two universal wheels 21, the outer sides of the two universal wheels 21 are respectively provided with a foot 22, and the foot 22 is in threaded connection with the underframe 1.
In order to facilitate the exertion of the rehabilitation training and prevent the patient from falling off the seat 2, in this embodiment, the hand-holding guardrails 23 are provided on both sides of the seat 2.
The motor 6 in this embodiment adopts a direct current brushless motor with model number 86BLD90-2418gu & gu200rt manufactured by Guizhou rain field motor limited company, the clutch 8 adopts an electromagnetic brake with model number DLD5-80 manufactured by Anhui peak clutch limited company, the magnetic powder brake 11 adopts a magnetic powder brake with model number FZ16K-YD manufactured by lantsu electro-mechanical (Jiangsu) limited company, and the angle sensor 15 adopts an angle sensor with model number MCJS.
The power unit comprises a motor component and a magnetic powder component, wherein the motor component is provided with a clutch 8, and the connection and the separation of a transmission shaft 12 and a motor 6 are realized through the clutch 8, so that the power unit realizes active training, passive training and power-assisted training.
During training, a patient sits on the seat 2, feet are placed between the fixed foot support 503 and the movable foot support 504, in the state that the patient actively trains, the armature of the clutch 8 is separated from the brake disc, the motor 6 is separated from the transmission shaft 12, the feet of the patient actively lift up for training, the magnetic powder brake 11 is controlled to provide damping required by the patient training, the feet drive the foot support 5 to lift up during the patient active training, the swing arm shaft 3 is enabled to rotate, the secondary transmission shaft 14 is enabled to rotate through the second synchronous pulley 19, the synchronous belt and the first synchronous pulley 17, and the angle sensor 15 can measure the rotation angle. In a passive training state of a patient, the armature iron of the clutch 8 is attracted to the brake disc, the magnetic powder brake 11 is controlled to provide no damping, at the moment, the motor 6 is connected with the transmission shaft 12, the second transmission belt pulley 18 is driven to rotate by the transmission shaft 12 under the driving of the motor 6, the second transmission belt pulley 18 drives the first transmission belt pulley 16 to rotate by the transmission belt, so that the secondary transmission shaft 14 is driven to rotate, namely the first synchronous belt pulley 17 is driven to rotate, the first synchronous belt pulley 17 drives the second synchronous belt pulley 19 to rotate by the synchronous belt, and then the swing arm shaft 3 is driven to rotate to swing the legs of the patient; during the power-assisted training, the patient selects to be in the active training mode first, and if the patient fails to complete the training program, that is, the data detected by the angle sensor 15 does not reach the preset value, the clutch 8 can be engaged to enter the passive training state within the set time.
The motor assembly is connected with the magnetic powder assembly, damping force is provided through 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 foot margin 22 are arranged below the motor assembly, so that the motor assembly is convenient to move, arrange and fix during use.
Other than the technical features described in the specification, all are known to those skilled in the art.
The above-described embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention, so that all equivalent changes or modifications of the structure, characteristics and principles described in the claims should be included in the scope of the present invention.
Claims (6)
1. The utility model provides a knee joint training device, includes chassis (1), seat (2), foot rest swing arm subassembly and power pack, seat (2) set up on chassis (1), foot rest swing arm subassembly sets up in seat (2) front end, power pack sets up in seat (2) below and is connected with foot rest swing arm subassembly transmission, its characterized in that, foot rest swing arm subassembly comprises swing arm axle (3), swing arm pole (4) and foot rest (5), swing arm axle (3) are located seat (2) front end and rotate with seat (2) and be connected, swing arm pole (4) upper end fixed cover is fixed to be provided with foot rest (5) on swing arm axle (3), lower extreme;
The power unit comprises a motor assembly and a magnetic powder assembly, the motor assembly is composed of 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 a 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, the transition shaft (9) is arranged on one side, far away from the motor (6), of the clutch (8), a rotating shaft of the motor (6) penetrates through the power support (7) and is in transmission connection with the clutch (8) and the transition shaft (9), a magnet 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), the magnetic powder assembly is composed of a magnetic powder support (10), a magnetic powder brake (11) and a transmission shaft (12), the magnetic powder support (10) is vertically and fixedly arranged on the chassis (1) and is correspondingly arranged in parallel with the power support (7), the brake (11) is fixedly arranged on one side, far away from the power support (7), far away from the magnetic powder support (7), of the magnetic powder support (8) and one end of the brake (12) is fixedly connected with the transmission shaft (12) The other end is in transmission connection with the swing arm shaft (3);
The foot rest swing arm assembly is characterized in that a secondary transmission assembly is arranged between the foot rest 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 support (13), a secondary transmission shaft (14) and an angle sensor (15), the secondary transmission support (13) is vertically and fixedly arranged on the underframe (1), the secondary transmission shaft (14) is transversely and rotatably arranged on the upper part of the secondary transmission support (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);
a first transmission belt wheel (16) is fixedly sleeved at one end of the secondary transmission shaft (14) far away from the angle sensor (15), and a first synchronous belt wheel (17) is fixedly sleeved at the middle part of the secondary transmission shaft;
A second driving belt wheel (18) is fixedly sleeved at one end, far away from the clutch (8), of the driving shaft (12), and the second driving belt wheel (18) is in driving connection with the first driving belt wheel (16) through a driving belt;
the middle part of the swing arm shaft (3) is fixedly sleeved with a second synchronous pulley (19), and the second synchronous pulley (19) is in transmission connection with the first synchronous pulley (17) through a synchronous belt.
2. The knee joint training device according to claim 1, wherein the foot rest (5) is composed of a positioning sleeve (501), a connecting rod (502), a fixed foot rest (503) and a movable foot rest (504), the positioning sleeve (501) is sleeved at the lower part of the swing arm rod (4), the number of the connecting rod (502), the fixed foot rest (503) and the movable foot rest (504) is two, the two connecting rods (502) are fixedly arranged at two sides of the positioning sleeve (501), the two fixed foot rests (503) are respectively symmetrically and fixedly arranged at the outer sides of the front ends of the two connecting rods (502), and the two movable foot rests (504) are respectively and slidably sleeved at the rear ends of the two connecting rods (502).
3. The knee joint training device according to claim 2, wherein the rear end array of the connecting rod (502) is provided with a plurality of first positioning holes, and a first spring pin is arranged at a position where the movable foot support (504) is sleeved with the connecting rod (502), and the first spring pin is located in one of the first positioning holes.
4. The knee joint training device according to claim 2, wherein a plurality of second positioning holes are formed in the lower portion of the swing arm rod (4) in an array manner, and second spring pins are arranged at the positions where the positioning sleeve (501) is sleeved with the swing arm rod (4), and are located in one of the second positioning holes.
5. A knee joint training apparatus according to claim 1, wherein the front part of the lower surface of the chassis (1) is provided with two directional wheels (20), the rear part 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 chassis (1).
6. A knee joint training apparatus according to claim 1, wherein the seat (2) is provided with hand-held guardrails (23) on both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911142097.9A CN110755800B (en) | 2019-11-20 | 2019-11-20 | Knee joint trainer |
Applications Claiming Priority (1)
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