A rehabilitation training device with adjustable upper limb motion range

Abstract

The invention discloses a rehabilitation training device with adjustable upper limb motion range, which belongs to the field of rehabilitation medical equipment. The invention comprises a seat, a support column and a rehabilitation training mechanism. The seat is arranged at the rear side of the support column, the rehabilitation training mechanism is fixed by the support column, the rehabilitation training mechanism comprises a transmission shaft, a swing rod and a translation shaft, a motor reducer drives the transmission shaft to rotate, the transmission shaft fixes the lower end of the swing rod, the length of the swing rod is adjustable, the translation shaft is rotatably installed on the upper end of the swing rod, the translation shaft fixes a pulley one, the translation shaft is connected to a double-linked wheel through a connecting rod one, the double-linked wheel is connected to the transmission shaft through a connecting rod two, the translation rod is connected to the double-linked wheel through a synchronous belt two, the double-linked wheel is connected to a pulley two through the synchronous belt one, the pulley two is coaxially arranged with the transmission shaft, and the pulley two is fixed on the support column, so that during the spatial motion of the patient drawing a circle in the front vertical plane, the translation rod always performs translation motion, and the length of the swing rod can be adjusted to achieve the motion range and motion difficulty adjustment of the rehabilitation training.

Description

Technical Field

[0001] The invention relates to a rehabilitation trainer with adjustable upper limb motion range, belonging to the technical field of rehabilitation medical equipment. Background Art

[0002] Among all the diseases of the elderly, stroke is one of the most serious diseases that affect the health of the elderly. It has an extremely high disability rate, and the disability rate of stroke tends to increase with age. Drug treatment has a certain effect. Traditional Chinese medicine rehabilitation training is also an effective treatment measure to improve the quality of life of patients. The current upper limb rehabilitation training equipment is dominated by multi-degree-of-freedom and multi-drive motors. The production cost, use cost and maintenance cost are high, and the safety and stability need to be improved. It is difficult to apply it to families and community hospitals. Even if there are individual rehabilitation trainers that can perform circular movements of the upper limbs, the patient's affected side palm movement sensation is poor, or even completely unable to move independently. When the patient draws a circle, the wrist must follow the traction to change direction or rely on the patient's palm to remain motionless, that is, the palm grasping part must not only revolve but also rotate. Even if a rotating mechanism can be used to connect with the traction mechanism, the safety is greatly reduced.

[0003] The technical solution of the present application adopts a motor reducer to drive the transmission shaft to rotate, and the transmission shaft drives the swing rod to rotate. The length of the swing rod is adjustable, and the end of the swing rod is rotatably connected to the translation rod. The translation rod is connected to the double wheel through a belt transmission, and the double wheel is connected to a fixed and non-rotating pulley through a belt transmission, so that the translation rod always moves in translation during the spatial movement of the patient drawing a circle in the front vertical plane. At the same time, since the length of the swing rod is adjustable, the patient can increase the length of the swing rod after a period of rehabilitation to increase the difficulty of rehabilitation training; the double wheel and the translation rod are connected by a connecting rod one, and the double wheel and the fixed pulley are also connected by a connecting rod two, so that no matter how the length of the swing rod is adjusted, the distance between the double wheel and the translation rod, and the distance between the double wheel and the fixed pulley do not change, thereby ensuring reliable belt transmission and ingenious structural design; the hand grip bar fixed in the vertical direction on the translation rod conforms to the exercise habits of healthy people's upper limb exercises and improves the comfort of rehabilitation training; a round hole is opened in the middle of the fixed pulley, which does not contact the transmission rod, so that the fixed pulley and the transmission rod are coaxially arranged. Summary of the invention

[0004] The purpose of the present invention is to provide a rehabilitation trainer in which the lower end of a swing arm is driven by a motor reducer, the upper end of the swing arm is connected to a translation shaft through a two-stage belt drive, and a connecting rod is used to connect the two-stage belt drives, wherein the pulley in the first-stage belt drive is fixed, so that when the motor reducer rotates, the translation shaft does not rotate, and the difficulty and range of movement can be adjusted by adjusting the length of the swing arm.

[0005] The technical solution of the present invention is implemented as follows: a rehabilitation trainer with adjustable upper limb motion range, comprising a seat 1, a support column 2, and a rehabilitation training mechanism 3. A seat is arranged on the rear side of the support column 2, and the rehabilitation training mechanism 3 is fixed on the upper end of the support column 2. The rehabilitation training mechanism 3 comprises a motor reducer 301, a transmission shaft 302, a swing rod, and a translation shaft 308. The motor reducer 301 is fixed on the support column 2, and the motor reducer 301 is connected to the front end of the transmission shaft 302 through a coupling 311. A rotation support structure of the transmission shaft 302 is arranged on the support column 2. The rear end of the transmission shaft 302 is rotationally connected to the lower end of the second connecting rod 318. The transmission shaft 302 passes through the second connecting rod 318 backwards and is fixed to the lower end of the swing rod. The length of the swing rod is adjustable. The upper end of the swing rod is rotationally installed on the middle part of the translation shaft 308. The rear end of the translation shaft 308 is fixed to the lower end of the hand grip 306, and the hand grip 306 is arranged along the vertical direction.

[0006] The front end of the translation shaft 308 is rotatably mounted on the upper end of the connecting rod 1 317, the translation shaft 308 passes forward to connect the connecting rod 1 317 and then fixes the pulley 1 316, the rear end of the intermediate shaft 313 is rotatably connected to the lower end of the connecting rod 1 317, the upper end of the connecting rod 2 318 is rotatably connected to the middle part of the intermediate shaft 313, the front end of the intermediate shaft 313 is rotatably connected to the double wheel 314, the pulley 1 316 is connected to the pulley 3 arranged on the double wheel 314 through the synchronous belt 2 315 to form a belt transmission, and the pulley 4 arranged on the double wheel 314 is connected to the pulley 2 319 through the synchronous belt 1 312 to form a belt transmission;

[0007] The second pulley 319 is fixed on the support column 2, and the second pulley 319 is coaxially arranged with the transmission shaft 302;

[0008] The pulley three, pulley four, pulley one 316 and pulley two 319 have the same number of teeth.

[0009] The structure of the pulley 2 319 fixing the support column 2 is: the middle part of the transmission shaft 302 passes through the inner holes of the pulley frame 309 and the inner holes of the pulley 2 319 backward in sequence, the inner holes of the pulley frame 309, the inner holes of the pulley 2 319, and the transmission shaft 302 are coaxially arranged, the diameters of the inner holes of the pulley frame 309 and the inner holes of the pulley 2 319 are both larger than the transmission shaft 302, the pulley frame 309 fixes the pulley 2 319, the pulley frame 309 is fixed to the rear end of the support platform 201, and the upper end of the support column 2 is provided with a support platform 201 extending to the rear side.

[0010] The length-adjustable structure of the swing rod is as follows: the swing rod comprises a lower swing rod 303, a locking bolt 304, and an upper swing rod 305; the lower side of the upper swing rod 305 is slidably connected to the upper side of the lower swing rod 303; the lower swing rod 303 is a hollow structure; the hollow inner cavity of the lower swing rod 303 is slidably connected to the outer contour of the upper swing rod 305; a threaded hole perpendicular to the length direction of the lower swing rod 303 is provided at the upper end of the lower swing rod 303; the threaded hole penetrates from the outer wall of the lower swing rod 303 to the inner cavity; the locking bolt 304 is screwed into the threaded hole for adjusting the sliding position of the lower swing rod 303 and the upper swing rod 305; and then the locking bolt 304 is tightened to achieve a fixed connection between the lower swing rod 303 and the upper swing rod 305.

[0011] The lengths of the connecting rod 1 317 and the connecting rod 2 318 are equal.

[0012] The structure of the rotation support structure of the transmission shaft 302 provided on the support column 2 is as follows: two bearing seats 310 are rotatably installed in the middle of the transmission shaft 302 , and the two bearing seats 310 are fixed on the support platform 201 .

[0013] The lengths of the connecting rod 1 317 and the connecting rod 2 318 are equal.

[0014] The upper and lower ends of the hand grip bar 306 are fixed with hand straps 307 .

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The technical solution of the present application adopts a motor reducer to drive the transmission shaft to rotate, and the transmission shaft drives the swing rod to rotate. The length of the swing rod is adjustable, and the end of the swing rod is rotatably connected to the translation rod. The translation rod is connected to the double wheel through a belt transmission, and the double wheel is connected to a fixed and non-rotating pulley through a belt transmission, so that the translation rod always moves in translation during the spatial movement of the patient drawing a circle in the front vertical plane. At the same time, since the length of the swing rod is adjustable, the patient can increase the length of the swing rod after a period of rehabilitation to increase the difficulty of rehabilitation training; the double wheel and the translation rod are connected by a connecting rod one, and the double wheel and the fixed pulley are also connected by a connecting rod two, so that no matter how the length of the swing rod is adjusted, the distance between the double wheel and the translation rod, and the distance between the double wheel and the fixed pulley do not change, thereby ensuring reliable belt transmission and ingenious structural design; the hand grip bar fixed in the vertical direction on the translation rod conforms to the exercise habits of healthy people's upper limb exercises and improves the comfort of rehabilitation training; a round hole is opened in the middle of the fixed pulley, which does not contact the transmission rod, so that the fixed pulley and the transmission rod are coaxially arranged. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The diagram is a schematic diagram of the overall structure of a rehabilitation trainer with adjustable upper limb motion range.

[0018] Figure 2 It is a structural schematic diagram of a rehabilitation training mechanism fixed on a support column.

[0019] Figure 3 This is a schematic diagram of the structure of a rehabilitation training institution. Figure 1 .

[0020] Figure 4 This is a schematic diagram of the structure of a rehabilitation training institution. Figure 2 .

[0021] Figure 5 It is a schematic diagram of the structure of the connecting rod mechanism and belt transmission part of the rehabilitation training mechanism.

[0022] Explanation of the reference numerals: 1-seat, 2-support column, 3-rehabilitation training mechanism, 201-support platform, 301-motor reducer, 302-transmission shaft, 303-lower swing rod, 304-locking bolt, 305-upper swing rod, 306-hand grip rod, 307-hand strap, 308-translational shaft, 309-pulley frame, 310-bearing bearing seat, 311-coupling, 312-synchronous belt one, 313-intermediate shaft, 314-double wheel, 315-synchronous belt two, 316-pulley one, 317-connecting rod one, 318-connecting rod two, 319-pulley two. DETAILED DESCRIPTION

[0023] Combination Figure 1-5The present invention discloses a rehabilitation training device with adjustable range of motion of upper limbs, comprising a seat 1, a support column 2, and a rehabilitation training mechanism 3. The direction of the present application is defined by the up-down, front-back, and left-right directions of the patient, so as to describe the present application. A seat is arranged at the rear side of the support column 2, and a support platform 201 extending to the rear side is arranged at the upper end of the support column 2. The rehabilitation training mechanism 3 is fixed on the support platform 201. The rehabilitation training mechanism 3 comprises a motor reducer 301, a transmission shaft 302, a swing rod, a hand grip rod 306, a hand strap 307, a translation shaft 308, a pulley frame 309, a bearing seat 310, a coupling 311, a synchronous belt 1 312, an intermediate shaft 313, a double wheel 314, a synchronous Belt 2 315, pulley 1 316, connecting rod 1 317, connecting rod 2 318, pulley 2 319, the swing arm includes an upper swing rod 305, a locking bolt 304, and a lower swing rod 303. The front end of the support platform 201 is fixed with the motor reducer 301, the output shaft of the motor reducer 301 is fixed with the front end of the coupling 311, the rear end of the coupling 311 is fixed with the transmission shaft 302, two bearing bearing seats 310 are rotatably installed on the middle part of the transmission shaft 302, and the two bearing bearing seats 310 are fixed on the support platform 201. After the middle part of the transmission shaft 302 passes through the inner hole of the pulley frame 309 and the inner hole of the pulley 2 319 backwards, it is rotated to connect the lower end of the connecting rod 2 318, and the rear end of the transmission shaft 302 is fixed. The lower end of the swing rod 303 is fixedly connected, the inner hole of the pulley frame 309, the inner hole of the second pulley 319, and the transmission shaft 302 are coaxially arranged, the inner hole of the pulley frame 309 and the inner hole of the second pulley 319 are larger than the transmission shaft 302, the pulley frame 309 fixes the second pulley 319, and the pulley frame 309 is fixed to the rear end of the support platform 201, the upper end of the second connecting rod 318 is rotatably connected to the middle part of the intermediate shaft 313, the front end of the intermediate shaft 313 is rotatably connected to the double wheel 314, the rear end of the intermediate shaft 313 is rotatably connected to the lower end of the connecting rod 1 317, the upper end of the connecting rod 1 317 is rotatably connected to the front end of the translation shaft 308, and the translation shaft 308 passes through the connecting rod 1 317 forward and fixes the pulley 1 316 The middle part of the translation shaft 308 is rotatably connected to the upper end of the upper swing rod 305, and the lower side of the upper swing rod 305 is slidably connected to the upper side of the lower swing rod 303. The lower swing rod 303 is a hollow structure, and the hollow inner cavity of the lower swing rod 303 is slidably connected to the outer contour of the upper swing rod 305. The upper end of the lower swing rod 303 is provided with a threaded hole perpendicular to the length direction of the lower swing rod 303, and the threaded hole passes through the outer wall of the lower swing rod 303 to the inner cavity. The locking bolt 304 is screwed into the threaded hole to adjust the sliding position of the lower swing rod 303 and the upper swing rod 305, and then tighten the locking bolt 304. The end of the locking bolt 304 presses against the upper swing rod 305 to achieve the fixation of the lower swing rod 303 and the upper swing rod 305 after the sliding position is adjusted.

[0024] The pulley 1 316 forms a belt transmission with the pulley 3 arranged on the double wheel 314 through the synchronous belt 2 315, and the pulley 4 arranged on the double wheel 314 forms a belt transmission with the pulley 2 319 through the synchronous belt 1 312.

[0025] The lengths of the connecting rod 1 317 and the connecting rod 2 318 are equal.

[0026] The pulley three, pulley four, pulley one 316 and pulley two 319 provided on the double wheel 314 have the same number of teeth, that is, the transmission ratio of pulley one 316 to pulley three is 1, and the transmission ratio of pulley two 319 to pulley four is 1.

[0027] The rear end of the translation shaft 308 fixes the lower end of the hand grip rod 306 , the hand grip rod 306 is arranged along the vertical direction, and the upper and lower ends of the hand grip rod 306 fix the hand straps 307 .

[0028] During the patient's rehabilitation training, the position of the seat 1 is adjusted, the patient's unilateral upper limb is located at the rear side of the rehabilitation training mechanism 3, the locking bolt 304 is loosened, and the mutual sliding of the lower swing rod 303 and the upper swing rod 305 is adjusted according to the range of the patient's upper limb that can draw a circle along the vertical plane, the connecting rod 1 317 and the connecting rod 2 318 swing, the locking bolt 304 is tightened, the length of the swing rod is adjusted, the patient grasps the grip rod 306 with the palm, the hand strap 307 is tied, the motor reducer 301 rotates, and the transmission shaft 302 is driven to rotate through the coupling 311, the transmission shaft 302 drives the lower swing rod 303 to swing, the upper swing rod 305 to swing, and the translation shaft 308 moves. Since the pulley 2 319 is fixed on the pulley frame 309, and the pulley frame 309 is fixed on the support platform 201, the pulley The second pulley 319 does not rotate, the pulley one 316 forms a belt transmission with the pulley three arranged on the double wheel 314 through the synchronous belt two 315, and the pulley four arranged on the double wheel 314 forms a belt transmission with the pulley two 319 through the synchronous belt one 312, and the transmission ratio of the pulley one 316 to the pulley three is 1, and the transmission ratio of the pulley two 319 to the pulley four is 1. When the lower swing rod 303 and the upper swing rod 305 rotate with the transmission shaft 302 as the center, the translation shaft 308 will not rotate around its own center, and the translation shaft 308 can only translate along a circular trajectory. The hand grip 306 is always in the vertical direction, which prevents the patient's palm from rotating during the translational movement of the patient's palm during the upper limb rehabilitation training and injuring the patient's palm or wrist joint, thereby improving the safety during the rehabilitation training.

Claims

1. A rehabilitation training device with adjustable upper limb motion range, characterized in that: The invention comprises a seat (1), a support column (2), and a rehabilitation training mechanism (3), wherein a seat is arranged at the rear side of the support column (2), and the rehabilitation training mechanism (3) is fixed at the upper end of the support column (2), and the rehabilitation training mechanism (3) comprises a motor reducer (301), a transmission shaft (302), a swing rod, and a translation shaft (308), wherein the motor reducer (301) is fixed on the support column (2), and the motor reducer (301) is connected to the transmission shaft (302) via a coupling (311). 302), a rotation support structure of a transmission shaft (302) is arranged on the support column (2), the rear end of the transmission shaft (302) is rotationally connected to the lower end of the second connecting rod (318), the transmission shaft (302) passes through the second connecting rod (318) backwards and fixes the lower end of the swing rod, the length of the swing rod is adjustable, the upper end of the swing rod is rotationally mounted on the middle part of the translation shaft (308), the rear end of the translation shaft (308) is fixed to the lower end of the hand grip rod (306), and the hand grip rod (306) is arranged along the vertical direction; The front end of the translation shaft (308) is rotatably mounted on the upper end of the connecting rod 1 (317), the translation shaft (308) passes forward and connects to the connecting rod 1 (317) and then fixes the pulley 1 (316), the rear end of the intermediate shaft (313) is rotatably connected to the lower end of the connecting rod 1 (317), the upper end of the connecting rod 2 (318) is rotatably connected to the middle part of the intermediate shaft (313), the front end of the intermediate shaft (313) is rotatably connected to the double wheel (314), the pulley 1 (316) is connected to the pulley 3 arranged on the double wheel (314) through the synchronous belt 2 (315) to form a belt transmission, and the pulley 4 arranged on the double wheel (314) is connected to the pulley 2 (319) through the synchronous belt 1 (312) to form a belt transmission; The second pulley (319) is fixed on the support column (2), and the second pulley (319) is coaxially arranged with the transmission shaft (302); The number of teeth of the pulley three, the pulley four, the pulley one (316) and the pulley two (319) is the same.

2. The rehabilitation training device with adjustable upper limb motion range according to claim 1, characterized in that: The structure of the support column (2) fixed by the second pulley (319) is as follows: the middle part of the transmission shaft (302) passes through the inner hole of the pulley frame (309) and the inner hole of the second pulley (319) in sequence backwards; the inner hole of the pulley frame (309), the inner hole of the second pulley (319) and the transmission shaft (302) are coaxially arranged; the inner hole of the pulley frame (309) and the inner hole of the second pulley (319) are both larger in diameter than the transmission shaft (302); the pulley frame (309) fixes the second pulley (319); the pulley frame (309) is fixed to the rear end of the support platform (201); and the upper end of the support column (2) is provided with a support platform (201) extending backwards.

3. The rehabilitation training device with adjustable upper limb motion range according to claim 1, characterized in that: The length-adjustable structure of the swing rod is as follows: the swing rod comprises a lower swing rod (303), a locking bolt (304), and an upper swing rod (305); the lower side of the upper swing rod (305) is slidably connected to the upper side of the lower swing rod (303); the lower swing rod (303) is a hollow structure; the hollow inner cavity of the lower swing rod (303) is slidably connected to the outer contour of the upper swing rod (305); the upper end of the lower swing rod (303) is provided with a threaded hole perpendicular to the length direction of the lower swing rod (303); the threaded hole penetrates from the outer wall of the lower swing rod (303) to the inner cavity; the threaded hole is screwed with the locking bolt (304) for adjusting the sliding position of the lower swing rod (303) and the upper swing rod (305); and then the locking bolt (304) is tightened to achieve a fixed connection between the lower swing rod (303) and the upper swing rod (305).

4. The rehabilitation training device with adjustable upper limb motion range according to claim 1, characterized in that: The lengths of the connecting rod 1 (317) and the connecting rod 2 (318) are equal.

5. The rehabilitation training device with adjustable upper limb motion range according to claim 2, characterized in that: The structure of the rotation support structure of the transmission shaft (302) provided on the support column (2) is as follows: two bearing seats (310) are rotatably installed in the middle of the transmission shaft (302), and the two bearing seats (310) are fixed on the support platform (201).

6. The rehabilitation training device with adjustable upper limb motion range according to any one of claims 1 to 5, characterized in that: The lengths of the connecting rod 1 (317) and the connecting rod 2 (318) are equal.

7. The rehabilitation training device with adjustable upper limb motion range according to any one of claims 1 to 5, characterized in that: The upper and lower ends of the hand grip rod (306) are fixed with hand straps (307).

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