阅读说明：本技术 一种便携的可穿戴式上肢康复机器人 (Portable wearable upper limb rehabilitation robot ) 是由 谢龙汉 徐朋朋 杨纳川 于 2020-05-18 设计创作，主要内容包括：本发明公开了一种便携的可穿戴式上肢康复机器人。所述机器人包括特制服装模块及可穿戴柔性执行器模块。通过固定在特制服装模块的双层衣服机构腰部的驱动系统转动线轮,线轮旋转拉动鲍登线线芯,从而带动人体的上肢做康复训练运动,通过健侧袖套的IMU运动信号及EMG生理信号获得患者主观意图的运动信号以及患侧袖套IMU信号当做患肢运动反馈信号,使其更好地控制鲍登线线芯的拉力大小与移动速度,提高康复效率,同时整套装置采用了重力平衡机构,在一定程度上减少了能源消耗。本发明可实现多关节的康复运动,不受环境条件约束,降低康复医师的工作强度以及提高工作效率。(The invention discloses a portable wearable upper limb rehabilitation robot. The robot comprises a tailor-made clothing module and a wearable flexible actuator module. The wire wheel is rotated by a driving system fixed on the waist of a double-layer clothes mechanism of a specially-made clothes module, the wire wheel rotationally pulls the bowden cable core, so that the upper limb of a human body is driven to do rehabilitation training movement, the movement signal of the subjective intention of a patient is obtained through the IMU movement signal and the EMG physiological signal of the healthy-side oversleeve, and the IMU signal of the sick-side oversleeve is taken as the movement feedback signal of the sick limb, so that the pulling force and the moving speed of the bowden cable core are better controlled, the rehabilitation efficiency is improved, meanwhile, the whole set of device adopts a gravity balance mechanism, and the energy consumption is reduced to a. The invention can realize multi-joint rehabilitation movement without being restricted by environmental conditions, reduce the working strength of rehabilitation doctors and improve the working efficiency.)

1. A portable wearable upper limb rehabilitation robot is characterized by comprising a specially-made clothing module and a wearable flexible actuator module;

the special clothing module comprises a double-layer clothing mechanism, a trunk supporting mechanism, a shoulder supporting mechanism and a driving mechanism; the wearable flexible actuator module comprises a gravity balance mechanism, an arm sleeve mechanism, a force counteracting mechanism, a Bowden cable transmission mechanism and a tension sensor mechanism;

the double-layer clothes mechanism is worn on a human body and is used for providing a hidden space for the Bowden cable sleeve, the power cable, the signal wire and the trunk supporting mechanism and preventing all parts from interfering with the motion of the human body;

the trunk supporting mechanism is hidden in the double-layer clothes mechanism and is used for supporting the force borne by the shoulder of the affected side and maintaining the stability of the integral framework mechanism, so that the integral mechanism is prevented from moving unstably when the actuating mechanism works;

the shoulder supporting mechanism is arranged on the shoulder of the double-layer clothes mechanism, is connected with the front and the back of the trunk supporting mechanism through locking screws (25), keeps the connection of a first nylon plate (76), a second nylon plate (77) and a rear nylon plate (35), and is used for installing a control box (84) and a Bowden cable sleeve fixing frame (24);

the gravity balance mechanism is arranged at the shoulder part of the affected side of the double-layer clothes mechanism, is fixedly connected with the shoulder support mechanism through a screw, is used for fixing the tail end of the shoulder Bowden cable sleeve and balancing the weight of a part of the affected side upper limb, and transmits the force born by the Bowden cable sleeve fixing frame (24) to the waist through the shoulder support mechanism and the trunk support mechanism which are connected with the Bowden cable sleeve fixing frame;

the arm sleeve mechanism is fixedly connected with an upper arm inflating air bag (33) and a forearm inflating air bag (34) through screws, the two air bags are fixedly connected with an affected arm sleeve (6), and the arm sleeve mechanism penetrates through the arm sleeve through an arm and is sleeved on an upper limb and used as a motor to transmit power to an acting point of the upper limb through a Bowden cable transmission mechanism, so that the rehabilitation training movement of the affected arm is realized;

the driving mechanism is arranged at the waist part behind the trunk supporting mechanism, is fixedly connected with a rear nylon plate (35) through a bolt and is used for fixing a motor system and a driver and transmitting the power of the motor to an arm sleeve mechanism fixedly connected with the tail end of the Bowden cable transmission mechanism through the Bowden cable transmission mechanism;

the bowden cable transmission mechanism is mainly arranged on the bowden cable sleeve fixing frame (24) and the arm sleeve mechanism, and a part of the bowden cable sleeve is hidden in the double-layer clothes mechanism;

the tension sensor mechanism is arranged at the tail end part of a Bowden cable core in the Bowden cable transmission mechanism and used for controlling information feedback and tension safety monitoring;

the force counteracting mechanism is arranged between the Bowden cable sleeve fixing frame (24) and the sliding piece (22) and used for counteracting harmful axial acting force along the upper arm in the process of pulling the Bowden cable core and enabling the upper arm to do effective rehabilitation shoulder bending and stretching and abduction motions.

2. The portable wearable upper limb rehabilitation robot according to claim 1, characterized in that: the double-layer clothes mechanism comprises underwear (26), a coat (27), an oversleeve zipper (5), a tight-fitting mechanism (78), an affected forearm IMU sensor (79), an affected upper arm IMU sensor (80), a healthy forearm IMU sensor (81), an EMG sensor (82), a healthy upper arm IMU sensor (83), an affected oversleeve (6) and a healthy side oversleeve (4);

the oversleeve zipper (5) is fixedly connected with the affected side oversleeve (6), and the affected side oversleeve (6) is provided with the oversleeve zipper (5); the tightening mechanism (78) is fixedly connected with two sides of the waist of the trunk supporting mechanism through screws; the healthy forearm IMU sensor (81) and the EMG sensor (82) are arranged at the forearm position of the healthy cuff (4), the healthy upper arm IMU sensor (83) is arranged at the upper arm position of the healthy cuff (4), and the three sensors are used for mirror image training to obtain an arm movement signal with subjective intention; the affected forearm IMU sensor (79) is arranged on a square boss (66) in the arm sleeve mechanism and used for tracking the spatial position of the forearm in the rotation direction; the diseased upper arm IMU sensor (80) is arranged on the bottom surface of an elbow joint differential Bowden wire sleeve boss (60) in the arm sleeve mechanism and is matched with the diseased upper arm IMU sensor (79) to determine the spatial positions of the flexion and extension of the shoulder joint and the extension and flexion directions of the elbow joint, and the diseased upper arm IMU sensor, the healthy upper arm IMU sensor (81), the EMG sensor (82) and the healthy upper arm IMU sensor (83) provide motion feedback signals for a control box (84) of the shoulder supporting mechanism together; the healthy side forearm IMU sensor (81), the EMG sensor (82), the healthy side upper arm IMU sensor (83), the affected side forearm IMU sensor (79) and the affected side upper arm IMU sensor (80) are fixed through strong glue or screws, and the mechanism processing is determined according to the situation.

3. The portable wearable upper limb rehabilitation robot according to claim 1, characterized in that: the shoulder supporting mechanism comprises a saddle-shaped supporting frame (75) and a control box (84);

the saddle-shaped support frame (75) is fixedly connected with a first nylon plate (76), a second nylon plate (77) and a rear nylon plate (35) of the trunk support mechanism through screws and used for supporting a Bowden cable sleeve fixing frame (24) of the gravity balance mechanism, and guiding the shoulder joint of the Bowden cable transmission mechanism to bend the Bowden cable sleeve (29), the shoulder joint extension Bowden cable sleeve (30) and the shoulder joint extension Bowden cable sleeve (31) to transmit the interaction force generated by the Bowden cable sleeve fixing frame (24) to the waist part of the rear nylon plate (35); the control box (84) is arranged below the healthy side of the saddle-shaped support frame (75) and comprises a tension sensor amplifier (86), a control board (87) and a power supply (85); the tension sensor amplifier (86) is responsible for being connected into a shoulder joint flexion tension sensor signal line (2), an elbow joint differential first tension sensor signal line (7-1), an elbow joint differential second tension sensor signal line (7-2), a shoulder joint extension tension sensor signal line (13) and a shoulder joint extension tension sensor signal line (14) in the tension sensor mechanism, is used for amplifying an analog signal of the tension sensor, and is hidden in an affected side oversleeve (6) and then led into the double-layer clothes mechanism, wherein the elbow joint differential first tension sensor signal line (7-1) and the elbow joint differential second tension sensor signal line (7-2) are hidden in the affected side oversleeve (6); the control panel (87) receives signals of the healthy-side forearm IMU sensor (81), the EMG sensor (82), the healthy-side upper arm IMU sensor (83), the diseased-side forearm IMU sensor (79), the diseased-side upper arm IMU sensor (80), the diseased-side shoulder IMU sensor (41) and the tension sensor amplifier (86) as input signals, and then outputs the input signals to a driver in the driving mechanism through a designed control program to control output parameters of the motor system;

the trunk supporting mechanism comprises a front nylon plate and a rear nylon plate (35);

the rear nylon plate (35) is an inverted T-shaped nylon plate, is arranged between an underwear (26) and an outer garment (27) of the double-layer clothes mechanism and is fixedly connected with a saddle-shaped support frame (75) in the shoulder supporting mechanism through screws; the front nylon plate is divided into a first nylon plate (76) and a second nylon plate (77), the bottoms of the first nylon plate (76) and the second nylon plate (77) are fixedly connected with the waist part of the rear nylon plate (35) through bolts respectively, and the top of the first nylon plate is fixedly connected with the saddle-shaped support frame (75).

4. The portable wearable upper limb rehabilitation robot according to claim 1, characterized in that: the driving mechanism comprises a fixing frame (94), a shoulder joint flexion and extension driver (97), a shoulder joint extension driver (98), a first elbow joint differential driver (103-1), a second elbow joint differential driver (103-2), a shoulder joint flexion and extension motor (96), a shoulder joint extension motor (100), a first elbow joint differential motor (102-1), a second elbow joint differential motor (102-2), a shoulder joint flexion and extension planetary reducer (95), a shoulder joint extension planetary reducer (99), a first elbow joint differential planetary reducer (101-1), a second elbow joint differential planetary reducer (101-2), a first elbow joint differential single-thread wheel (89-1), a second elbow joint differential single-thread wheel (89-2), a shoulder joint extension single-thread wheel (90), a shoulder joint flexion and extension double-thread wheel (93), A first elbow joint differential planetary reducer output shaft (89-1), a second elbow joint differential planetary reducer output shaft (89-2), a shoulder joint abduction planetary reducer output shaft (91), a shoulder joint flexion and extension planetary reducer output shaft (92) and a driving system box (10);

the shoulder joint flexion and extension motor (96), the shoulder joint flexion and extension planetary reducer (95) and the shoulder joint flexion and extension double-gear (93) provide power output for the two directions of shoulder joint flexion motion and shoulder joint extension motion; the shoulder joint abduction motor (100), the shoulder joint abduction planetary reducer (99) and the shoulder joint abduction single-thread wheel (90) provide power for the shoulder joint abduction movement direction, and the adduction movement direction provides power by depending on the gravity of the upper limb; the first elbow joint differential motor (102-1), the second elbow joint differential motor (102-2), the first elbow joint differential planetary reducer (101-1), the second elbow joint differential planetary reducer (101-2), the first elbow joint differential single-thread wheel (89-1) and the second elbow joint differential single-thread wheel (89-2) provide power for the elbow joint flexion and extension and forearm rotation directions; the motor is fixedly connected with the planetary reducer in an interference fit manner to form a motor system; the shoulder joint flexion and extension motor (96), the shoulder joint extension motor (100), the first elbow joint differential motor (102-1) and the second elbow joint differential motor (102-2) are all hollow cup motors; the first elbow joint differential driver (103-1) and the second elbow joint differential driver (103-2) are symmetrically installed through screws by taking the first driver fixing plate (104-1) as a mirror surface; the shoulder joint flexion and extension driver (97) and the shoulder joint abduction driver (98) are symmetrically installed through screws by taking the second driver fixing plate (104-2) as a mirror surface; the upper surface of the fixing frame (94) is provided with a plurality of through holes, the small through holes are distributed around the large through holes, four groups of large and small through holes are arranged in total, each planetary reducer is provided with a threaded hole, and the planetary reducer is fixedly connected with the fixing frame (94) through bolts; because the cylindrical top surfaces of the shoulder joint flexion and extension planetary reducer (95), the shoulder joint abduction planetary reducer (99), the first elbow joint differential planetary reducer (101-1) and the second elbow joint differential planetary reducer (101-2) are provided with bosses, four large through holes are formed in the fixing frame (94) to facilitate the passing of the bosses, the position of each large through hole needs to be determined firstly when the fixing frame (94) is machined, then the circle center of each large through hole is used as a circle, small through holes are arrayed on the circle, the number of the small through holes is equal to that of threaded holes in the planetary reducer, the circle centers of the large through holes are distributed along the arc of the fixing frame, the distance between the circle centers of the adjacent large through holes is equal in pairs, and the rotation between the reel and the reel is required to; the first elbow joint differential single-thread wheel (89-1), the second elbow joint differential single-thread wheel (89-2), the shoulder joint extension single-thread wheel (90) and the shoulder joint flexion and extension double-thread wheel (93) are respectively in centering interference fit with a first elbow joint differential planetary reducer output shaft (89-1), a second elbow joint differential planetary reducer output shaft (89-2), a shoulder joint extension planetary reducer output shaft (91) and a shoulder joint flexion and extension planetary reducer output shaft (92) through middle through holes; the shoulder joint flexion and extension driver (97), the shoulder joint abduction driver (98), the first elbow joint differential driver (103-1) and the second elbow joint differential driver (103-2) transmit current signals through electric wires and cables to be input into the shoulder joint flexion and extension motor (96), the shoulder joint abduction motor (100), the first elbow joint differential motor (102-1) and the second elbow joint differential motor (102-2), so that the output parameters of the motors, namely torque and rotating speed, are controlled; the fixing frame (94) is arranged in the driving system box (10), the driving system box (10) is used for sealing an internal motor system and a driver, and comprises a driving system box upper part (106) and a driving system box lower part (105), and the driving system box upper part and the driving system box lower part are integrated through up-down sliding; actuating system case upper portion (106) and actuating system case lower part (105) both sides face all has two through-holes, have at mount (94) both sides panel surface processing with actuating system case upper portion (106) and actuating system case lower part (105) both sides surface through-hole position matched with screw hole, mount (94) with shoulder joint flexion and extension motor (96), shoulder joint flexion and extension planetary reducer (95) and shoulder joint flexion and extension double coil (93), shoulder joint abduction motor (100), shoulder joint abduction planetary reducer (99), shoulder joint abduction single coil (90), first elbow joint differential motor (102-1), second elbow joint differential motor (102-2), first elbow differential planetary reducer (101-1), second elbow differential planetary reducer (101-2), first elbow differential single coil (89-1), After the second elbow joint differential speed single-thread wheel (89-2), the shoulder joint flexion and extension driver (97), the shoulder joint extension driver (98), the first elbow joint differential speed driver (103-1) and the second elbow joint differential speed driver (103-2) are integrally assembled, the assembled fixing frame is fixedly connected with the lower portion (105) of the driving system box in the first step through screws, the upper portion (106) of the driving system box and the lower portion (105) of the driving system box are combined together in the second step, and finally the screws penetrate through holes in two sides of the upper portion (106) of the driving system box and threaded holes in two sides of the fixing frame (94), so that the upper portion (106) of the driving system box and the lower portion (105) of the driving system box are assembled into the driving system box (10).

5. The portable wearable upper limb rehabilitation robot according to claim 1, characterized in that: the gravity balance mechanism comprises a Bowden cable sleeve fixing frame (24) and an elastic material gravity balance device; the Bowden cable sleeve fixing frame (24) is fixedly connected with a shoulder supporting mechanism boss (74) on the affected side shoulder of the saddle-shaped supporting frame (75) through bolts; the Bowden cable sleeve fixing frame (24) comprises a shoulder joint abduction Bowden cable sleeve hole (36), a shoulder joint flexion Bowden cable sleeve hole (39), a shoulder joint extension Bowden cable sleeve hole (45), a fastener seat (43), a flexion-extension elastic material transition piece (40), an abduction elastic material transition piece (44) and a shoulder IMU sensor (41); the elastic material gravity device comprises an outward-extending elastic material (37), a bending and stretching elastic material (38) and an elastic material fastener (42); the shoulder joint flexion Bowden cable sleeve (29), the shoulder joint abduction Bowden cable sleeve (30) and the shoulder joint extension Bowden cable sleeve (31) are respectively installed in the shoulder joint flexion Bowden cable sleeve hole (39), the shoulder joint abduction Bowden cable sleeve hole (36) and the shoulder joint extension Bowden cable sleeve hole (45); the elastic material gravity balancing device is characterized in that one end of an extending elastic material (37) and one end of a bending and stretching elastic material (38) in the elastic material gravity balancing device respectively penetrate through a fastener seat (43) and then an elastic material fastener (42) is installed, the other end of the extending elastic material and the other end of the bending and stretching elastic material respectively penetrate through an extending elastic material transition piece (44) and a bending and stretching elastic material transition piece (40), then respectively penetrate through an extending elastic material acting boss (50) and a bending and stretching elastic material acting boss (55), and finally the elastic material fastener (42) is installed; the elastic material in the elastic material gravity balancing device is realized by a rubber rope or a tension spring arranged between steel wire ropes; the shoulder IMU sensor (41) is arranged behind a fastener seat (43) on the lower surface of the Bowden cable sleeve fixing frame (24), and is fixed through strong glue or screws as a space base coordinate system of the healthy side upper arm IMU sensor (83) and the affected side upper arm IMU sensor (80) as long as no other part installation interference is generated, so that space coordinate data during correct shoulder joint movement can be collected conveniently.

6. The portable wearable upper limb rehabilitation robot according to claim 1, characterized in that: the arm sleeve mechanism comprises an upper arm sleeve mechanism, an upper arm inflating air bag (33), a forearm inflating air bag (34), a forearm differential mechanism and a torsion spring (9);

the upper arm sleeve mechanism comprises an upper arm fixing frame mechanism, a sliding rail (59), a sliding piece (22), a sliding block (57) and a steel wire rope fixing piece assembly (61); the upper arm fixing frame mechanism comprises an upper arm fixing frame lower part (49), an upper arm fixing frame upper part (56) and an upper arm fixing frame middle part (58), wherein the upper arm fixing frame lower part (49) and the upper arm fixing frame upper part (56) are both processed by 3D printing, the upper arm fixing frame middle part (58) is processed by a machining mode, and the upper arm fixing frame mechanism is generally formed by adopting the three-section mode; four sliding rails (59) are arranged on four sliding grooves on the upper arm fixing frame mechanism through screws respectively, the four sliding grooves are uniformly distributed on the surface of the upper arm fixing frame mechanism, and then the lower part (49) of the upper arm fixing frame and the upper part (56) of the upper arm fixing frame are fixedly connected with the sliding rails (59) through screws; the sliding part (22) is internally provided with four sliding grooves and four countersunk holes, and the four sliding blocks (57) are respectively arranged in the four sliding grooves through screws; the steel wire rope fixing part assembly (61) comprises a sliding part fastener (62), a splicing wire core (63) and a wire locking device (64), the screw is fixedly connected with the sliding part (62), the surface of the screw is smooth, so that the rotation freedom degree is provided, the splicing wire core (63) is vertically connected with a tension and tension sensor and the sliding part fastener (62), the middle of the splicing wire core (63) forms a whole through the wire locking device (64), three steel wire rope fixing part assemblies (61) are arranged on the sliding part (22), the steel wire rope fixing part assemblies (61) in the shoulder joint bending and stretching direction and the shoulder joint stretching direction are respectively the same as the steel wire rope fixing part assemblies (61) in; in the extending direction of the sliding part (22), the bottom end of the force counteracting mechanism is fixedly connected through a locking screw, the size of the locking screw in the extending direction of the sliding part (22) is different from that of the locking screw in the bending and extending direction of the sliding part (22), and the model selection is carried out according to the actual size;

the upper part (56) of the upper arm fixing frame comprises an outward-extending elastic material acting boss (50) and a bending-extending elastic material acting boss (55), and the two bosses are used as the acting points of the tail ends of the elastic materials in the gravity balance mechanism; the lower part (49) of the upper arm fixing frame comprises a bearing inner seat (46), a torsion spring seat (47), a torsion spring foot groove (48) and an elbow joint differential Bowden wire sleeve boss (60) which are used for being connected with a forearm differential mechanism; the bearing inner seat (46) is matched and fixed with the inner ring of the joint bearing (8) of the forearm differential mechanism, so that the connection between the upper arm fixing frame mechanism and the forearm differential mechanism is realized, and the flexion and extension movement of the elbow joint is realized; the torsion spring seat (47) is mainly used for limiting the position of the torsion spring (9), the torsion spring foot groove (48) is mainly used for placing a torsion spring foot, and the torsion spring foot is tightly attached to the torsion spring foot groove (48); the bearing inner seat (46), the torsion spring seat (47) and the torsion spring foot groove (48) are processed in a bilateral symmetry mode, and the lower part (49) of the upper arm fixing frame, the bearing inner seat (46), the torsion spring seat (47) and the torsion spring foot groove (48) are formed in one step in a 3D printing mode; the elbow joint differential Bowden wire sleeve boss (60) is processed at the front part of the lower part (49) of the upper arm fixing frame in the bending and stretching direction and is close to the round bottom surface position facing the forearm direction, and is mainly used for fixing the elbow joint differential Bowden wire double sleeve (23) and installing an affected side upper arm IMU sensor (80);

the upper arm inflatable air bag (33) is arranged between the affected side oversleeve (6) and the upper arm fixing frame mechanism through screws; the forearm inflating air bag (34) is arranged between the affected side oversleeve (6) and the inner ring mechanism (72) of the forearm differential mechanism through screws;

the forearm differential mechanism comprises an inner ring mechanism (72), an outer ring mechanism (68) and a thin-wall bearing (71); the inner ring mechanism (72) is fixedly connected with the forearm inflating air bag (34) through a screw; the inner ring mechanism (72) is processed by 3D printing and comprises a rotating body, a handle (65), a square boss (66) and a limiting boss (73); the rotary body is provided with two wire grooves along the surface of the rotary body and used for placing a first elbow joint differential Bowden wire core (20) and a second elbow joint differential Bowden wire core (21), the limiting boss (73) is provided with two processed fastener holes, the tail end of the wire core is provided with a corresponding fastener, when the wire core is stressed, the fastener hole seat blocks the fastener, so that the inner ring mechanism (72) generates motion, and the handle (65) is processed right above the front part of the inner ring mechanism; the square boss (66) is processed on the grip (65) and used for fixing an affected forearm IMU sensor (79); the limiting boss (73) is processed right below the front of the inner ring mechanism (72) and is used for limiting the rotation of the inner ring mechanism (72);

the outer ring mechanism (68) comprises a joint bearing (8), an adjustable rod (69), a bolt column (70) and a pulley (67); the adjustable rods (69) are arranged on a rod piece of the outer ring mechanism, the bolt columns (70) are arranged on the rod piece of the outer ring mechanism (68), the left rod and the right rod are respectively four and have the same size, one end of each adjustable rod (69) penetrates through the bolt columns (70) on the two sides, then the adjustable rods (69) are rotationally fixed through the locking caps (17), the adjustable rods (69) move left and right, and then the length of the front arm rod piece is adjustable through the locking caps (17); the outer ring mechanism rod piece is also provided with a foot groove which has the same shape as the lower part (49) of the upper arm fixing frame and is used for placing a torsional spring foot at the other end of the torsional spring (9), and the elbow joint does stretching reset motion through the torsional spring (9) after doing flexion motion; the outer ring of the joint bearing (8) is matched and fixed with a hole at one end of an adjustable rod (69), two sides of the adjustable rod (69) of the joint bearing (8) are respectively provided with one adjustable rod, and the types of the adjustable rods are the same; the four pulleys (67) are of the same type and are used for smoothly transferring a first elbow joint differential Bowden wire core (20) and a second elbow joint differential Bowden wire core (21) from an inner ring mechanism to a position right above an outer ring mechanism (68);

the thin-wall bearing (71) is matched and fixed with the inner ring mechanism (72) and the outer ring mechanism (68), and the inner ring mechanism and the outer ring mechanism adopt 3D printing; the forearm differential mechanism mainly enables the forearm to generate differential motion through different tension of a first elbow joint differential Bowden wire core (20) and a second elbow joint differential Bowden wire core (21), when the tension of two wire cores is the same, elbow joint flexion and extension motion is realized, and when the tension of the two wire cores is different, forearm rotation motion is realized.

7. The portable wearable upper limb rehabilitation robot according to claim 1, characterized in that: the force counteracting mechanism comprises a parallelogram mechanism, a tension spring (51) and a hinge mechanism;

the hinge mechanism is arranged below the Bowden cable sleeve fixing frame (24) through screws and comprises a shoulder joint flexion and extension hinge (53) and a shoulder joint abduction hinge (54), and the shoulder joint abduction hinge (54) is fixedly connected with the Bowden cable sleeve fixing frame (24) through screws; the shoulder joint flexion and extension hinge (53) is fixedly connected with the shoulder joint abduction hinge (54) through a locking screw; the parallelogram mechanism is fixedly connected by four parallelogram components (52) with the same model through locking screws, the top end of the parallelogram mechanism is fixedly connected with the shoulder joint flexion and extension hinge (53) through the locking screws, and the bottom end of the parallelogram mechanism is fixedly connected with the sliding piece (22) through the locking screws; the tension springs (51) are two in number and the same in type, are installed inside the parallelogram mechanism, and hook rings inside the parallelogram assembly (52) are hooked through feet at two ends of the tension springs (51).

8. The portable wearable upper limb rehabilitation robot according to claim 1, characterized in that: the Bowden cable transmission mechanism comprises an elbow joint differential Bowden cable double sleeve (23), a shoulder joint flexion Bowden cable sleeve (29), a shoulder joint extension Bowden cable sleeve (30), a shoulder joint extension Bowden cable sleeve (31), a shoulder joint extension Bowden cable core (12), a shoulder joint flexion Bowden cable core (1), a shoulder joint extension Bowden cable core (16), a first elbow joint differential Bowden cable core (20), a second elbow joint differential Bowden cable core (21) and a limiting block (32);

the shoulder joint flexion Bowden cable sleeve (29), the shoulder joint abduction Bowden cable sleeve (30) and the shoulder joint extension Bowden cable sleeve (31) are respectively installed in the shoulder joint flexion Bowden cable sleeve hole (39), the shoulder joint abduction Bowden cable sleeve hole (36) and the shoulder joint extension Bowden cable sleeve hole (45); the tail end of the elbow joint differential Bowden wire double-sleeve (23) is arranged in an elbow joint differential Bowden wire sleeve boss (60) hole at the lower part (49) of the upper arm fixing frame; the shoulder joint flexion Bowden cable core (1), the shoulder joint extension Bowden cable core (12), the shoulder joint extension Bowden cable core (16), the first elbow joint differential Bowden cable core (20) and the second elbow joint differential Bowden cable core (21) are respectively installed in a shoulder joint flexion Bowden cable sleeve (29), a shoulder joint extension Bowden cable sleeve (31), a shoulder joint extension Bowden cable sleeve (30) and an elbow joint differential Bowden cable double-wire sleeve (23), wherein the elbow joint differential Bowden cable double-wire sleeve (23) is formed by fixing two Bowden cable sleeves together;

the tail ends of the two ends of the shoulder joint buckling Bowden cable core (1), the shoulder joint extension Bowden cable core (12) and the shoulder joint extension Bowden cable core (16) are respectively provided with a tension sensor upper end connecting piece (108) and a tension sensor lower end connecting piece (110); the lower end connecting piece (110) of the tension sensor is continuously connected with a part of wire cores (63), the wire cores penetrate through holes of a sliding piece fastener (62), then are fixed together through a wire locker (64), and are fixedly connected with the sliding piece (62) through locking screws, the continuous wire cores (63) are vertically connected with the tension sensor, the tension sensor and the sliding piece fastener (62), the middle of the continuous wire cores forms a whole through the wire locker (64), three wire rope fixing pieces (61) are arranged on the sliding piece (22), the wire rope fixing pieces (61) in the shoulder joint bending and extending directions and the bending and extending directions are respectively the same as the locking screw in type, the lower end of a force counteracting mechanism is fixedly connected with the sliding piece (22) through the locking screws in the bending and extending directions in the outward extending direction of the sliding piece (22), and therefore the locking screw in the outward extending direction is different from the locking screw in size in the bending and extending direction;

the tail ends of two ends of the first elbow joint differential Bowden wire core (20) and the second elbow joint differential Bowden wire core (21) are respectively provided with a tension sensor upper end connecting piece (108) and a tension sensor lower end connecting piece (110), the tension sensor lower end connecting piece (110) is continuously connected with a section of wire core, the section of wire core passes through a transition mechanism formed by four pulleys (67) right above an outer ring mechanism (68), then the wire core is led into two wire grooves of an inner ring mechanism body, and finally the wire core passes through a limiting boss (73) hole right below an inner ring mechanism (72), the limiting boss (73) is provided with two fastener holes, and the tail end of the wire core is provided with a corresponding wire core fastener; the limiting blocks (32) are five in number and the models of the limiting blocks are the same, and the limiting blocks are fixedly connected to a shoulder joint extension Bowden wire core (12), a shoulder joint flexion Bowden wire core (1), a shoulder joint extension Bowden wire core (16) in the range between the Bowden wire sleeve fixing frame (24) and the sliding piece (22) respectively, and an elbow joint differential Bowden wire core (20) and a second elbow joint differential Bowden wire core (21) in the range between an elbow joint differential Bowden wire sleeve boss (60) and the pulley (67).

9. The portable wearable upper limb rehabilitation robot according to claim 1, characterized in that: the tension sensor mechanism comprises a shoulder joint abduction tension sensor (15), a shoulder joint extension tension sensor (11), a shoulder joint flexion tension sensor (3), an elbow joint differential first tension sensor (18), an elbow joint differential second tension sensor (19), a tension sensor upper end connecting piece (108), a tension sensor lower end connecting piece (110) and a signal wire outlet (107);

the upper end of the shoulder joint abduction tension sensor (15) is connected with one end of a shoulder joint abduction Bowden wire core (16) through a tension sensor upper end connecting piece (108), and the lower end of the shoulder joint abduction tension sensor is connected with the other end of a splicing wire core of the shoulder joint abduction Bowden wire core (16) through a tension sensor lower end connecting piece (110); the upper end of the shoulder joint extension tension sensor (11) is connected with one end of a shoulder joint extension Bowden wire core (12) through a tension sensor upper end connecting piece (108), and the lower end of the shoulder joint extension Bowden wire core is connected with the other end of a continuous wire core of the shoulder joint extension Bowden wire core (12) through a tension sensor lower end connecting piece (110); the upper end of the shoulder joint buckling tension sensor (3) is connected with one end of a shoulder joint buckling Bowden wire core (1) through a tension sensor upper end connecting piece (108), and the lower end of the shoulder joint buckling tension sensor is connected with the other end of a continuous wire core of the shoulder joint buckling Bowden wire core (1) through a tension sensor lower end connecting piece (110); the upper end of the elbow joint differential first tension sensor (18) is connected with one end of a first elbow joint differential Bowden wire core (20) through a tension sensor upper end connecting piece (108), and the lower end of the elbow joint differential first tension sensor is connected with the other end of a continuous wire core of the first elbow joint differential Bowden wire core (20) through a tension sensor lower end connecting piece (110); the upper end of the elbow joint differential second tension sensor (19) is connected with one end of a second elbow joint differential Bowden wire core (21) through a tension sensor upper end connecting piece (108), and the lower end of the elbow joint differential second tension sensor is connected with the other end of a continuous wire core of the second elbow joint differential Bowden wire core (21) through a tension sensor lower end connecting piece (110); the shoulder joint abduction tension sensor (15), the shoulder joint extension tension sensor (11), the shoulder joint flexion tension sensor (3), the first tension sensor of elbow joint differential (18), the second tension sensor of elbow joint differential (19) collect tensile information at patient rehabilitation training in-process, with these information transmission to the tension sensor amplifier carry out signal amplification after transmit to the controller as a controlled variable, the first tension sensor of elbow joint differential (18), the second tension sensor of elbow joint differential (19) model is the same.

10. The portable wearable upper limb rehabilitation robot according to claim 1, characterized in that: the double-layer clothes mechanism, the trunk supporting mechanism, the shoulder supporting mechanism, the driving mechanism, the gravity balancing mechanism, the arm sleeve mechanism, the Bowden cable transmission mechanism, the tension sensor mechanism and the force counteracting mechanism are not limited to the left and right directions, and the healthy side and the affected side are not limited to the left and right parts.

Technical Field

The invention relates to the field of rehabilitation medical instruments, in particular to a portable wearable upper limb rehabilitation robot.

Background

In China, about 75% of stroke patients have upper limb dysfunction in different degrees, a series of problems also exist in the rehabilitation training of the upper limbs of hemiplegia patients at present, the current domestic main method is to assist the patients to train one by one through rehabilitation therapists, but the problems exist, such as high working strength and low efficiency, most rehabilitation processes depend on the experience judgment of the rehabilitation therapists too much, and better quantitative evaluation cannot be carried out; for most of the existing upper limb rehabilitation devices, such as an upper limb rehabilitation robot A6, a patient can only wear a set of rigid exoskeleton in a closed rehabilitation training room and sit on a seat to perform rehabilitation movement, the training mode can limit the non-axis-fixed fine movement of main movement joints, and meanwhile, some auxiliary functions in life cannot be realized, such as taking things, pouring water and drinking, and on the other hand, the closed rehabilitation training environment can reduce the participation sense and the rehabilitation curative effect of the patient. Therefore, a new portable rehabilitation device is needed to replace the work of the rehabilitation therapist, assist the patient in the rehabilitation training of the shoulder joint and the elbow joint, and improve the participation sense and the corresponding treatment effect of the rehabilitation training of the patient.

Disclosure of Invention

To the problems, a portable wearable upper limb rehabilitation robot is provided, which aims to effectively reduce the cost, improve the environmental adaptability of equipment, reduce the working strength of a rehabilitation therapist and improve the corresponding working efficiency, and further ensure the reliability of the equipment. The invention is provided with a special garment, a Bowden cable mechanism is arranged in the garment, one end of a Bowden cable core is connected with a driving mechanism, the other end of the Bowden cable core is connected with an actuating mechanism, the waist of the special garment is fixedly provided with the driving mechanism, the driving mechanism controls a motor to rotate and drives a wire wheel to rotate, and the upper limb of a patient does corresponding limb movement along with the telescopic movement of the Bowden cable core on the wire wheel, so as to assist the upper limb of the patient to complete rehabilitation training.

The purpose of the invention is realized by at least one of the following technical solutions.

A portable wearable upper limb rehabilitation robot comprises a specially-made clothing module and a wearable flexible actuator module;

the special clothing module comprises a double-layer clothing mechanism, a trunk supporting mechanism, a shoulder supporting mechanism and a driving mechanism; the wearable flexible actuator module comprises a gravity balance mechanism, an arm sleeve mechanism, a force counteracting mechanism, a Bowden cable transmission mechanism and a tension sensor mechanism;

the double-layer clothes mechanism is worn on a human body and is used for providing a hidden space for the Bowden cable sleeve, the power cable, the signal wire and the trunk supporting mechanism and preventing all parts from interfering with the motion of the human body;

the trunk supporting mechanism is hidden in the double-layer clothes mechanism and is used for supporting the force borne by the shoulder of the affected side and maintaining the stability of the integral framework mechanism, so that the integral mechanism is prevented from moving unstably when the actuating mechanism works;

the shoulder supporting mechanism is arranged on the shoulder of the double-layer clothes mechanism, is connected with the front and the back of the trunk supporting mechanism through locking screws (25), keeps the connection of the first nylon plate, the second nylon plate and the rear nylon plate, and is used for installing a control box and a Bowden cable sleeve fixing frame;

the gravity balance mechanism is arranged at the shoulder part on the affected side of the double-layer clothes mechanism, is fixedly connected with the shoulder support mechanism through a screw, is used for fixing the tail end of the shoulder Bowden cable sleeve and balancing the weight of a part of the affected upper limb, and transmits the force borne by the Bowden cable sleeve fixing frame (the force has two parts, one part is used for balancing the weight of the upper limb, and the other part is used for acting force of the Bowden cable sleeve on the Bowden cable fixing frame) to the waist part through the shoulder support mechanism and the trunk support mechanism which are connected with the gravity balance mechanism;

the arm sleeve mechanism is fixedly connected with the upper arm inflatable air bag and the forearm inflatable air bag through screws, the two air bags are fixedly connected with the affected side oversleeve, and the arm sleeve mechanism penetrates through the oversleeve through the arm to be sleeved on the upper limb and is used as a motor to transmit power to an acting point of the upper limb through the Bowden cable transmission mechanism, so that the rehabilitation training movement of the affected side arm is realized;

the driving mechanism is arranged at the waist part behind the trunk supporting mechanism, is fixedly connected with the rear nylon plate through a bolt and is used for fixing the motor system and the driver and transmitting the power of the motor to the arm sleeve mechanism fixedly connected with the tail end of the Bowden cable transmission mechanism through the Bowden cable transmission mechanism;

the bowden cable transmission mechanism is mainly arranged on the bowden cable sleeve fixing frame and the arm sleeve mechanism, and a part of the bowden cable sleeve is hidden in the double-layer clothes mechanism;

the tension sensor mechanism is arranged at the tail end part of a Bowden cable core in the Bowden cable transmission mechanism and used for controlling information feedback and tension safety monitoring;

the force counteracting mechanism is arranged between the Bowden cable sleeve fixing frame and the sliding part and used for counteracting harmful axial acting force along the upper arm in the process of pulling the Bowden cable core and enabling the upper arm to do effective rehabilitation shoulder bending and stretching and abduction motions.

Further, the double-layer clothes mechanism comprises underwear, outer clothes, an oversleeve zipper, a tight-fitting mechanism, an affected forearm IMU sensor, an affected upper arm IMU sensor, a healthy forearm IMU sensor, an EMG sensor, a healthy upper arm IMU sensor, an affected oversleeve and a healthy oversleeve;

the oversleeve zipper is fixedly connected with the affected side oversleeve, and because the affected side upper limb of the patient is inconvenient to directly penetrate into the affected side oversleeve, the affected side oversleeve is provided with the oversleeve zipper, when the patient starts to penetrate, the affected side oversleeve wraps the upper limb, and then the patient is convenient to put the affected side arm into the affected side oversleeve through the oversleeve zipper; the tightening mechanism is fixedly connected with two sides of the waist of the trunk supporting mechanism through screws, so that the degree of tightness of the tailor-made clothing module can be adjusted according to patients with different body types, and the stability of the whole mechanism is improved; the healthy side forearm IMU sensor and the EMG sensor are arranged at the forearm position of the healthy side sleeve, the healthy side upper arm IMU sensor is arranged at the upper arm position of the healthy side sleeve, and the three sensors are used for mirror image training to obtain an arm movement signal with subjective intention; the affected forearm IMU sensor is arranged on a square boss in the arm sleeve mechanism and used for tracking the spatial position of the forearm in the rotation direction; the diseased upper arm IMU sensor is arranged on the bottom surface of an elbow joint differential Bowden cable sleeve boss in the arm sleeve mechanism and is matched with the diseased forearm IMU sensor, so that the spatial positions of the shoulder joint in flexion and extension, abduction and elbow joint flexion and extension directions are determined, and the diseased upper arm IMU sensor, the healthy forearm IMU sensor, the EMG sensor and the healthy upper arm IMU sensor jointly provide motion feedback signals for a control box of the shoulder supporting mechanism; the healthy side forearm IMU sensor, the EMG sensor, the healthy side upper arm IMU sensor, the affected side forearm IMU sensor, the affected side upper arm IMU sensor and the affected side shoulder IMU sensor are fixed through strong glue or screws, and the mechanism processing is determined according to the situation.

Further, the shoulder supporting mechanism comprises a saddle-shaped supporting frame and a control box;

the saddle-shaped support frame is fixedly connected with a first nylon plate, a second nylon plate and a rear nylon plate of the trunk support mechanism through screws and used for supporting a Bowden cable sleeve fixing frame of the gravity balance mechanism, and because the nylon plates have certain rigidity, the interaction force generated by a shoulder joint buckling Bowden cable sleeve, a shoulder joint extending Bowden cable sleeve and a shoulder joint abduction Bowden cable sleeve of the Bowden cable transmission mechanism on the Bowden cable sleeve fixing frame is guided to be transmitted to the waist part of the rear nylon plate; the control box is arranged below the healthy side of the saddle-shaped support frame and comprises a tension sensor amplifier, a control panel and a power supply; the tension sensor amplifier is used for connecting shoulder joint flexion tension sensor signal lines, elbow joint differential first tension sensor signal lines, elbow joint differential second tension sensor signal lines, shoulder joint extension tension sensor signal lines and shoulder joint abduction tension sensor signal lines in the tension sensor mechanism and amplifying analog signals of the tension sensors, and the two signal lines, namely the elbow joint differential first tension sensor signal line and the elbow joint differential second tension sensor signal line, are hidden in the sleeve on the affected side and then led into the double-layer clothes mechanism; the control panel receives signals of the healthy side forearm IMU sensor, the EMG sensor, the healthy side upper arm IMU sensor, the diseased side forearm IMU sensor, the diseased side upper arm IMU sensor, the diseased side shoulder IMU sensor and the tension sensor amplifier as input signals, and then the input signals are output to a driver in the driving mechanism through a designed control program to control output parameters of the motor system.

Further, the torso support mechanism comprises a front nylon plate and a rear nylon plate;

the rear nylon plate is an inverted T-shaped nylon plate, is arranged between the underwear and the coat of the double-layer clothes mechanism, and is fixedly connected with a saddle-shaped support frame in the shoulder supporting mechanism through screws; the front nylon plate is divided into a first nylon plate and a second nylon plate, the bottoms of the first nylon plate and the second nylon plate are fixedly connected with the waist part of the rear nylon plate through bolts respectively, and the top of the first nylon plate and the top of the second nylon plate are fixedly connected with the saddle-shaped support frame.

Furthermore, the driving mechanism comprises a fixing frame, a shoulder joint flexion and extension driver, a shoulder joint abduction driver, a first elbow joint differential driver, a second elbow joint differential driver, a shoulder joint flexion and extension motor, a shoulder joint abduction motor, a first elbow joint differential motor, a second elbow joint differential motor, a shoulder joint flexion and extension planetary reducer, a shoulder joint abduction planetary reducer, a first elbow joint differential planetary reducer, a second elbow joint differential planetary reducer, a first elbow joint differential single-thread wheel, a second elbow joint differential single-thread wheel, a shoulder joint abduction single-thread wheel, a shoulder joint flexion and extension double-thread wheel, a first elbow joint differential planetary reducer output shaft, a second elbow joint differential planetary reducer output shaft, a shoulder joint abduction planetary reducer output shaft, a shoulder joint flexion and extension planetary reducer output shaft and a driving system box;

the shoulder joint flexion and extension motor, the shoulder joint flexion and extension planetary reducer and the shoulder joint flexion and extension double-gear are used for providing power output for the two directions of shoulder joint flexion motion and extension motion; the shoulder joint abduction motor, the shoulder joint abduction planetary reducer and the shoulder joint abduction single-line wheel are used for providing power for the shoulder joint abduction movement direction, and the adduction movement direction provides power by depending on the gravity of the upper limb; the first elbow joint differential motor, the second elbow joint differential motor, the first elbow joint differential planetary reducer, the second elbow joint differential planetary reducer, the first elbow joint differential single-wire wheel and the second elbow joint differential single-wire wheel are used for providing power for the elbow joint flexion and extension and the forearm rotation movement direction; the motor is fixedly connected with the planetary reducer in an interference fit manner to form a motor system; the shoulder joint flexion and extension motor, the shoulder joint abduction motor, the first elbow joint differential motor and the second elbow joint differential motor are all hollow cup motors; the first elbow joint differential driver and the second elbow joint differential driver are symmetrically installed through screws by taking the first driver fixing plate as a mirror surface; the shoulder joint flexion and extension driver and the shoulder joint abduction driver are symmetrically installed through screws by taking the second driver fixing plate as a mirror surface; the upper surface of the fixing frame is provided with a plurality of through holes, the small through holes are distributed around the large through holes, four groups of the large through holes and four groups of the small through holes are arranged in total, each planetary reducer is provided with a threaded hole, and the planetary reducer is fixedly connected with the fixing frame through bolts; because the top surfaces of the cylinders of the shoulder joint flexion and extension planetary reducer, the shoulder joint abduction planetary reducer, the first elbow joint differential planetary reducer and the second elbow joint differential planetary reducer are provided with bosses, four large through holes are formed in the fixing frame, the bosses can conveniently penetrate through the bosses, the positions of the large through holes are determined firstly when the fixing frame is processed, then the circle center of each large through hole is used as a circle, small through holes are arrayed on the circle, the number of the small through holes is equal to that of threaded holes in the planetary reducer, the circle centers of the large through holes are distributed along the arc of the fixing frame, the distances between the circle centers of the adjacent large through holes are equal in pairs, and the rotation between the wire wheels is ensured not to; the first elbow joint differential single-thread wheel, the second elbow joint differential single-thread wheel, the shoulder joint abduction single-thread wheel and the shoulder joint flexion and extension double-thread wheel are respectively in centering interference fit with an output shaft of a first elbow joint differential planetary reducer, an output shaft of a second elbow joint differential planetary reducer, an output shaft of a shoulder joint abduction planetary reducer and an output shaft of a shoulder joint flexion and extension planetary reducer through middle through holes; the shoulder joint flexion and extension driver, the shoulder joint abduction driver, the first elbow joint differential driver and the second elbow joint differential driver transmit current signals through electric wires and cables to be input into the shoulder joint flexion and extension motor, the shoulder joint abduction motor, the first elbow joint differential motor and the second elbow joint differential motor so as to control the output parameters of the motors, namely torque and rotating speed; the fixing frame is arranged in the driving system box, the driving system box is used for sealing an internal motor system and a driver, and comprises an upper part of the driving system box and a lower part of the driving system box, and the upper part and the lower part of the driving system box are integrated through up-down sliding; two through holes are arranged on both sides of the upper part of the driving system box and the lower part of the driving system box, threaded holes matched with the through holes on the upper part of the driving system box and the two sides of the lower part of the driving system box are processed on the surfaces of the two side plates of the fixing frame, a shoulder joint flexion and extension motor, a shoulder joint flexion and extension planetary reducer, a shoulder joint flexion and extension double-wire wheel, a shoulder joint extension motor, a shoulder joint extension planetary reducer, a shoulder joint extension single-wire wheel, a first elbow joint differential planetary reducer, a second elbow joint differential planetary reducer, a first elbow joint differential single-wire wheel, a second elbow joint differential single-wire wheel, a shoulder joint flexion and extension driver, a shoulder joint extension driver, a first elbow joint differential driver and a second elbow joint differential driver are integrally assembled, and then the assembled fixing frame is fixedly connected with the lower part of the driving system box through screws in the first step, and secondly, combining the upper part of the driving system box and the lower part of the driving system box together, and finally, penetrating through holes on two sides of the upper part of the driving system box and threaded holes on two sides of the fixing frame through screws, so that the upper part of the driving system box and the lower part of the driving system box are assembled into the driving system box.

Further, the gravity balance mechanism comprises a Bowden cable sleeve fixing frame and an elastic material gravity balance device; the bowden cable sleeve fixing frame is fixedly connected with a shoulder supporting mechanism boss on the affected side shoulder of the saddle-shaped supporting frame through a bolt; the Bowden cable sleeve fixing frame comprises a shoulder joint abduction Bowden cable sleeve hole, a shoulder joint flexion Bowden cable sleeve hole, a shoulder joint extension Bowden cable sleeve hole, a fastener seat, a flexion-extension elastic material transition piece, an abduction elastic material transition piece and a shoulder IMU sensor; the elastic material gravity device comprises an abduction elastic material, a flexion and extension elastic material and an elastic material fastener; the shoulder joint flexion Bowden cable sleeve, the shoulder joint abduction Bowden cable sleeve and the shoulder joint extension Bowden cable sleeve are respectively arranged in the shoulder joint flexion Bowden cable sleeve hole, the shoulder joint abduction Bowden cable sleeve hole and the shoulder joint extension Bowden cable sleeve hole; the elastic material gravity balancing device comprises an elastic material gravity balancing device, a Bowden wire sleeve fixing frame, an elastic material fastener, an elastic material transition piece, an outward-extending elastic material acting boss, a bending-extending elastic material acting boss and an elastic material fastener, wherein one end of the outward-extending elastic material and one end of the bending-extending elastic material in the elastic material gravity balancing device respectively penetrate through the fastener seat and then the elastic material fastener is installed, the other end of the outward-extending elastic material in the elastic material gravity balancing device respectively penetrates through the outward-extending elastic material transition piece and the bending-extending elastic material transition piece, then the outward-; the elastic material in the elastic material gravity balancing device is realized by a rubber rope or a tension spring added between steel wire ropes, the shoulder IMU sensor is arranged behind a fastener seat on the lower surface of the Bowden cable sleeve fixing frame, and the shoulder IMU sensor is fixed by strong adhesive or fixed by screws as a space base coordinate system of the healthy side upper arm IMU sensor and the affected side upper arm IMU sensor as long as no other part installation interference is generated, so that the space coordinate data during correct shoulder joint movement can be collected.

Further, the arm sleeve mechanism comprises an upper arm sleeve mechanism, an upper arm inflating air bag, a forearm differential mechanism and a torsion spring;

the upper arm sleeve mechanism comprises an upper arm fixing frame mechanism, a sliding rail, a sliding piece, a sliding block and a steel wire rope fixing piece assembly; the upper arm fixing frame mechanism comprises an upper arm fixing frame lower part, an upper arm fixing frame upper part and an upper arm fixing frame middle part, wherein the upper arm fixing frame lower part and the upper arm fixing frame upper part are both subjected to 3D printing processing, the purpose is to reduce the weight borne by the upper arm, the upper arm fixing frame middle part is processed in a machining mode, and the upper arm fixing frame mechanism is generally formed in a three-section mode; the four sliding rails are firstly installed on four sliding grooves on the upper arm fixing frame mechanism through screws respectively, the four sliding grooves are uniformly distributed on the surface of the upper arm fixing frame mechanism, and then the lower part of the upper arm fixing frame and the upper part of the upper arm fixing frame are fixedly connected with the sliding rails through screws; the four sliding blocks are respectively arranged in the four sliding grooves through screws; the steel wire rope fixing part assembly comprises a sliding part fastener, a splicing wire core and a wire locking device, wherein the splicing wire core is fixedly connected with a sliding part through a pair of screws, the surface of each screw is smooth to provide a rotational degree of freedom, the splicing wire core is vertically connected with a tension sensor and the sliding part fastener, the middle of each splicing wire core forms a whole through the wire locking device, three steel wire rope fixing part assemblies are arranged on the sliding part, the steel wire rope fixing part assemblies are respectively arranged in the shoulder joint stretching and stretching directions and the abduction directions, the models of the steel wire rope fixing part assemblies in the stretching and stretching directions are the same as those of the locking screws, but the bottom end of the force counteracting mechanism is fixedly connected through the locking screws in the extending direction of the sliding part, the sizes of the locking screws in the stretching and stretching directions of the sliding part are;

the upper part of the upper arm fixing frame comprises an outward-extending elastic material acting boss and a bending-extending elastic material acting boss, and the two bosses are mainly used as the acting points of the tail ends of the elastic materials in the gravity balance mechanism; the lower part of the upper arm fixing frame comprises a bearing inner seat, a torsion spring foot groove and an elbow joint differential Bowden wire sleeve boss which are used for being connected with a forearm differential mechanism; the bearing inner seat is used for being matched and fixed with a joint bearing inner ring of the forearm differential mechanism, so that the connection between the upper arm fixing frame mechanism and the forearm differential mechanism is realized, and the flexion and extension movement of the elbow joint is realized; the torsion spring seat is mainly used for limiting the position of a torsion spring, the torsion spring foot groove is mainly used for placing a torsion spring foot, and meanwhile, the torsion spring foot is tightly attached to the torsion spring foot groove, so that the torsion spring foot is stressed uniformly, and the stress concentration at the position is prevented; the bearing inner seat, the torsion spring seat and the torsion spring foot groove are processed in a bilateral symmetry mode, and the lower part of the upper arm fixing frame, the bearing inner seat, the torsion spring seat and the torsion spring foot groove are formed at one time in a 3D printing mode in consideration of the complex structure and the weight factors; the elbow joint differential bowden cable sleeve boss is processed at the front part of the lower part of the upper arm fixing frame in the bending and extending direction and is close to the round bottom surface position facing the forearm direction, and the elbow joint differential bowden cable double-sleeve is mainly used for fixing the elbow joint differential bowden cable double-sleeve and installing an affected side upper arm IMU sensor;

the upper arm inflatable air bag is arranged between the affected side oversleeve and the upper arm fixing frame mechanism through screws, so that the upper limb of the patient can conveniently penetrate before inflation, and after the upper limb penetrates, the gap between the upper arm and the upper arm fixing frame mechanism is eliminated through inflation, so that the coaxiality of the upper arm fixing frame mechanism and the upper arm is kept; the forearm inflation air bag is arranged between the affected side oversleeve and the inner ring mechanism of the forearm differential mechanism through a screw, and has the function of eliminating the gap between the forearm and the inner ring mechanism, thereby keeping the coaxiality of the forearm differential mechanism and the forearm;

the forearm differential mechanism comprises an inner ring mechanism, an outer ring mechanism and a thin-wall bearing and is used for realizing flexion and extension movement of the elbow joint and forearm rotation movement; the inner ring mechanism is fixedly connected with the forearm inflatable air bag through a screw and used as a force action point for elbow rehabilitation training so as to realize forearm rotation movement; the inner ring mechanism is processed by 3D printing and comprises a rotating body, a handle, a square boss and a limiting boss; the rotary body is provided with two wire grooves along the surface of the body and used for placing a first elbow joint differential Bowden wire core and a second elbow joint differential Bowden wire core, the limiting boss is provided with two processed fastener holes, the tail end of the wire core is provided with a corresponding fastener, when the wire core is stressed, the fastener hole seat blocks the fastener, so that the inner ring mechanism generates motion, and the handle is processed right above the front part of the inner ring mechanism and used for stabilizing the hand posture of a patient; the square boss is processed on the handle and used for fixing the affected forearm IMU sensor; the limiting boss is processed right below the front face of the inner ring mechanism and used for limiting the rotation of the inner ring mechanism so as to prevent the injury caused by the overlarge rotation angle of the forearm;

the outer ring mechanism comprises a joint bearing, an adjustable rod, a bolt column and a pulley, and the mechanism is used for being connected with the upper arm fixing frame mechanism so as to realize elbow joint bending and stretching movement; the adjustable rods are arranged on the outer ring mechanism rod piece, the bolt columns are arranged on the outer ring mechanism rod piece, the left rod and the right rod are respectively provided with four bolts with the same size, one end of each adjustable rod penetrates through the bolt columns on the two sides, then the adjustable rods are rotationally fixed through the lock caps, the adjustable rods can move left and right, and then the length of the forearm rod piece can be adjusted through the lock caps; the outer ring mechanism rod piece is also provided with a foot groove which has the same shape as the lower part of the upper arm fixing frame and is used for placing a torsional spring foot at the other end of the torsional spring, and the elbow joint does stretching reset motion through the torsional spring after doing flexion motion; the outer ring of the joint bearing is matched and fixed with a hole at one end of the adjustable rod, two sides of the adjustable rod of the joint bearing are respectively provided with one adjustable rod, the types of the adjustable rods are the same, and the purpose is to reduce extra friction generated by flexion and extension motions of the elbow joint as much as possible; the four pulleys are the same in model and are used for enabling the wire cores of the first elbow joint differential Bowden cable and the wire cores of the second elbow joint differential Bowden cable to be smoothly transited to the position right above the outer ring mechanism from the inner ring mechanism;

the thin-wall bearing is matched and fixed with the inner ring mechanism and the outer ring mechanism, and the inner ring mechanism and the outer ring mechanism can meet the requirements by adopting 3D printing due to the low speed in the training process; the forearm differential mechanism mainly enables the forearm to generate differential motion through different tension of a first elbow joint differential Bowden wire core and a second elbow joint differential Bowden wire core, when the tension of the two wire cores is the same, elbow joint flexion and extension motion is achieved, and when the tension of the two wire cores is different, forearm rotation motion is achieved.

Further, the force counteracting mechanism comprises a parallelogram mechanism, a tension spring and a hinge mechanism;

the hinge mechanism is arranged below the Bowden cable sleeve fixing frame through screws and comprises a shoulder joint flexion and extension hinge and a shoulder joint abduction hinge, and the shoulder joint abduction hinge is fixedly connected with the Bowden cable sleeve fixing frame through screws and used for providing the abduction freedom degree of the shoulder joint; the shoulder joint flexion and extension hinge is fixedly connected with the shoulder joint abduction hinge through a locking screw and is used for providing the flexion and extension freedom degree of the shoulder joint; the parallelogram mechanism is fixedly connected by four parallelogram components with the same model through locking screws, the top end of the parallelogram mechanism is fixedly connected with the shoulder joint flexion and extension hinge through the locking screws, and the bottom end of the parallelogram mechanism is fixedly connected with the sliding piece through the locking screws; the tension springs are provided with two identical types, are arranged inside the parallelogram mechanism, and hook rings inside the parallelogram assembly are hooked through feet at two ends of the tension springs.

Furthermore, the Bowden cable transmission mechanism comprises an elbow joint differential Bowden cable double-sleeve, a shoulder joint flexion Bowden cable sleeve, a shoulder joint abduction Bowden cable sleeve, a shoulder joint extension Bowden cable core, a shoulder joint flexion Bowden cable core, a shoulder joint abduction Bowden cable core, a first elbow joint differential Bowden cable core, a second elbow joint differential Bowden cable core and a limiting block;

the shoulder joint flexion Bowden cable sleeve, the shoulder joint abduction Bowden cable sleeve and the shoulder joint extension Bowden cable sleeve are respectively arranged in the shoulder joint flexion Bowden cable sleeve hole, the shoulder joint abduction Bowden cable sleeve hole and the shoulder joint extension Bowden cable sleeve hole; the tail ends of the elbow joint differential bowden cable double sleeves are arranged in elbow joint differential bowden cable sleeve boss holes in the lower part of the upper arm fixing frame; the shoulder joint flexion Bowden wire core, the shoulder joint extension Bowden wire core, the first elbow joint differential Bowden wire core and the second elbow joint differential Bowden wire core are respectively arranged in a shoulder joint flexion Bowden wire sleeve, a shoulder joint extension Bowden wire sleeve and an elbow joint differential Bowden wire double-wire sleeve, wherein the elbow joint differential Bowden double-wire sleeve is formed by fixing two Bowden wire sleeves together; because the two bowden cables move simultaneously and are fixed together without any influence on the training movement by independent movement, the two bowden cables are named as elbow joint differential bowden cable double sleeves;

the tail ends of the two ends of the shoulder joint buckling Bowden cable core, the shoulder joint extension Bowden cable core and the shoulder joint extension Bowden cable core are respectively provided with a tension sensor upper end connecting piece and a tension sensor lower end connecting piece; the lower end connecting piece of the tension sensor is continuously connected with a part of wire cores, the wire cores penetrate through fastener holes of the sliding piece and are fixed together through the wire locking device, the wire locking device is fixedly connected with the sliding piece through locking screws, the surface of each screw can provide rotational freedom, the wire cores are continuously connected with the tension sensor, the tension sensor and the sliding piece fastener up and down, the middle of each wire locking device forms a whole, three wire rope fixing pieces are arranged on the sliding piece, the three wire rope fixing pieces are respectively arranged in the shoulder joint stretching direction and the shoulder joint stretching direction, the wire rope fixing pieces in the stretching direction are the same as the type of the locking screws, but the lower end of the force counteracting mechanism is fixedly connected with the sliding piece through the locking screws in the shoulder joint stretching direction and the shoulder joint stretching direction, and the size of the locking screws in the stretching direction is different from that of;

the tail ends of two ends of the first elbow joint differential Bowden wire core and the second elbow joint differential Bowden wire core are respectively provided with a tension sensor upper end connecting piece and a tension sensor lower end connecting piece, the tension sensor lower end connecting piece is continuously connected with a section of wire core, the section of wire core passes through a transition mechanism formed by four pulleys right above the outer ring mechanism, then the wire core is led into two wire grooves of the inner ring mechanism body and finally passes through a limiting boss hole right below the inner ring mechanism, the limiting boss is provided with two fastener holes, and the tail end of the wire core is provided with a corresponding wire core fastener; the limiting blocks are five in number and the models of the limiting blocks are the same, and the limiting blocks are fixedly connected to a shoulder joint extension Bowden wire core, a shoulder joint flexion Bowden wire core, a shoulder joint extension Bowden wire core, a first elbow joint differential Bowden wire core and a second elbow joint differential Bowden wire core in the range between the shoulder joint extension Bowden wire core and the elbow joint differential Bowden wire sleeve boss and the pulley respectively, so that the secondary damage of a patient caused by the transitional extension of the Bowden wire cores is prevented.

Furthermore, the tension sensor mechanism comprises a shoulder joint abduction tension sensor, a shoulder joint extension tension sensor, a shoulder joint flexion tension sensor, an elbow joint differential first tension sensor, an elbow joint differential second tension sensor, a tension sensor upper end connecting piece, a tension sensor lower end connecting piece and a signal wire outlet;

the upper end of the shoulder joint abduction tension sensor is connected with one end of the shoulder joint abduction bowden cable core through a tension sensor upper end connecting piece, and the lower end of the shoulder joint abduction tension sensor is connected with the other end of the continuous connection cable core of the shoulder joint abduction bowden cable core through a tension sensor lower end connecting piece; the upper end of the shoulder joint extension tension sensor is connected with one end of a shoulder joint extension Bowden wire core through a tension sensor upper end connecting piece, and the lower end of the shoulder joint extension Bowden wire core is connected with the other end of a continuous wire core of the shoulder joint extension Bowden wire core through a tension sensor lower end connecting piece; the upper end of the shoulder joint buckling tension sensor is connected with one end of a shoulder joint buckling Bowden wire core through a tension sensor upper end connecting piece, and the lower end of the shoulder joint buckling tension sensor is connected with the other end of a continuous wire core of the shoulder joint buckling Bowden wire core through a tension sensor lower end connecting piece; the upper end of the elbow joint differential first tension sensor is connected with one end of a first elbow joint differential Bowden wire core through a tension sensor upper end connecting piece, and the lower end of the elbow joint differential first tension sensor is connected with the other end of a continuous wire core of the first elbow joint differential Bowden wire core through a tension sensor lower end connecting piece; the upper end of the elbow joint differential second tension sensor is connected with one end of a second elbow joint differential Bowden wire core through a tension sensor upper end connecting piece, and the lower end of the elbow joint differential second tension sensor is connected with the other end of a continuous wire core of the second elbow joint differential Bowden wire core through a tension sensor lower end connecting piece; the shoulder joint abduction tension sensor, the shoulder joint extension tension sensor, the shoulder joint flexion tension sensor, the elbow joint differential first tension sensor and the elbow joint differential second tension sensor collect tension information in the rehabilitation training process of a patient, the information is transmitted to the tension sensor amplifier, the signals are amplified and then transmitted to the controller to serve as a control quantity, the safety and the reliability in the rehabilitation process are guaranteed, and the elbow joint differential first tension sensor and the elbow joint differential second tension sensor are the same in model.

Furthermore, the double-layer clothes mechanism, the trunk supporting mechanism, the shoulder supporting mechanism, the driving mechanism, the gravity balancing mechanism, the arm sleeve mechanism, the bowden cable transmission mechanism, the tension sensor mechanism and the force counteracting mechanism are not limited to the left and the right directions, and the healthy side and the affected side are not limited to the left and the right parts.

Compared with the prior art, the invention has the advantages that:

the upper limb rehabilitation robot can replace the work of a rehabilitation therapist, assist the upper limbs of a patient to carry out rehabilitation training through the upper limb rehabilitation robot, and effectively reduce the working strength of the rehabilitation therapist; the wearable flexible actuator integrated with the Bowden cable can effectively reduce the non-axis-fixed damage of the rigid robot; the portable wearable rehabilitation robot can effectively assist the patient in work which cannot be completed by himself in life, increase the self-confidence of the patient in life in the rehabilitation process and be beneficial to improving the rehabilitation curative effect; the force counteracting mechanism is adopted to effectively counteract the axial force along the arm existing in the rehabilitation process of the patient, so that the secondary damage to the patient is reduced; meanwhile, subjective consciousness of the patient can be effectively monitored by adopting sensors such as IMU (inertial measurement unit) and EMG (electromagnetic EMG), and participation of the patient can be improved.

Drawings

Fig. 1 is a schematic upper body structure diagram of a portable wearable upper limb rehabilitation robot according to an embodiment of the present invention.

Fig. 2 is an overall right isometric view of a wearable device in an embodiment of the invention.

FIG. 3 is a rear view of the wearable device with the coat removed as a whole in an embodiment of the present invention

Fig. 4 is a schematic structural view of a bowden cable sheath fixing frame according to an embodiment of the present invention.

Fig. 5 is a schematic view of the overall structure of the force canceling mechanism and the upper arm cuff mechanism in the embodiment of the present invention.

Fig. 6 is a schematic view of a slider structure in an embodiment of the present invention.

Fig. 7 is a schematic view of the general structure of a wire rope fixing member in an embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a forearm cuff mechanism in an embodiment of the invention.

Figure 9 is an inside elevational view of a removal actuator and garment in an embodiment of the present invention.

Fig. 10 is an overall right view of the wearable device in the embodiment of the present invention.

Fig. 11 is a schematic view of the overall structure of the control box in the embodiment of the present invention.

Fig. 12 is a schematic view of the internal structure of the drive system case in the embodiment of the invention.

Fig. 13 is a schematic structural diagram of a fixing frame in an embodiment of the invention.

Fig. 14 is a schematic view of a drive system box in the embodiment of the present invention.

Fig. 15 is a schematic structural view of a tension sensor mechanism in an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description of the embodiments of the present invention, taken in conjunction with the accompanying drawings, is provided by way of example, and not by way of limitation.