Anti-falling power assisting device for old people

Abstract

The invention discloses an anti-falling power assisting device for old people, and belongs to the technical field of walking aids, the anti-falling power assisting device comprises a supporting plate, side plates are symmetrically and fixedly connected to two sides of the supporting plate, a first driving wheel and a second driving wheel are respectively mounted on the bottom surfaces of the side plates, a first limiting mechanism is mounted outside the first driving wheel, and a second limiting mechanism is mounted outside the second driving wheel; a first connecting rod is fixedly connected between the two side plates, the first connecting rod is hollow and provided with a controller, the controller is electrically connected with the first limiting mechanism and the second limiting mechanism, speed sensors are arranged on the bottom faces of the side plates and electrically connected with the controller, and first sliding grooves are formed in the opposite inner sides of the side plates. A protection mechanism is slidably connected into the first sliding groove. The first driving wheel is adjusted and decelerated through frictional resistance, and the second driving wheel is forcibly stopped through gear locking, so that double-insurance braking is formed; the protection ring rapidly rises to the waist position, the impact force is dispersed through the annular structure, and direct falling impact is prevented.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of walking aids, in particular to an old person fall-preventing power-assisted device. BACKGROUND

[0002] An apparatus that assists human body to support weight, maintain balance and walk is called a walking aid, which is usually used to assist rehabilitation patients and old patients to walk. The walking aids on the market are generally divided into wheel type and foot support type. The foot support type walking aid has high stability, but needs to be lifted frequently during use, has poor flexibility, consumes more physical strength, and is not suitable for old people. The wheel type walking aid has high flexibility, and only needs to be pushed during use to provide support and assistance. However, the general wheel type walking aid is easy to slide forward when the old person is not stable at the beginning of movement, and the walking aid itself continues to move forward due to inertia when the old person stops, which is easy to cause the old person to fall forward or to be dragged to fall forward, and has a great safety hazard. SUMMARY

[0003] The purpose of the present application is to provide an old person fall-preventing power-assisted device to solve the problems existing in the prior art.

[0004] To achieve the above purpose, the present application provides the following scheme: the present application provides an old person fall-preventing power-assisted device, which comprises a support plate, two sides of the support plate are symmetrically fixedly connected with side plates, the bottom surfaces of the side plates are respectively provided with first driving wheels and second driving wheels, the first driving wheels are externally provided with first limiting mechanisms, the second driving wheels are externally provided with second limiting mechanisms, a first connecting rod is fixedly connected between the two side plates, the first connecting rod is hollow and is provided with a controller, the controller is electrically connected with the first limiting mechanisms and the second limiting mechanisms respectively, the bottom surfaces of the side plates are provided with speed sensors, the speed sensors are electrically connected with the controller, the opposite inner sides of the side plates are provided with first sliding grooves, and protection mechanisms are slidably connected in the first sliding grooves.

[0005] Optionally, the two sides of the first driving wheel are respectively provided with first connecting seats, the first connecting seats are fixedly connected with the bottom surfaces of the side plates, the first connecting seats are provided with first cavities, the first limiting mechanisms are located in the first cavities, the first driving wheels are provided with first connecting shafts, the first connecting shafts are respectively rotatably connected with the first connecting seats, and the first limiting mechanisms are located above the first connecting shafts.

[0006] Optionally, the first limiting mechanism includes first connecting plates symmetrically fixed in the first cavity, second sliding grooves are provided on the opposite inner sides of the two first connecting plates, a friction pad is slidably connected between the two second sliding grooves, the friction pad abuts against the first driving wheel, and a first driving part abuts against the side of the friction pad away from the first driving wheel, the first driving part being fixed to the first cavity.

[0007] Optionally, the first drive unit includes a first motor fixedly connected to the inner wall of the first cavity, the output shaft of the first motor is fixedly connected to a first lead screw, the first lead screw is threadedly connected to a second connecting plate, the second connecting plate is slidably connected between the two first connecting plates, a spring is fixedly connected to the side of the second connecting plate away from the first motor, the spring abuts against the friction pad, and the first motor is electrically connected to the controller.

[0008] Optionally, a second connecting seat is symmetrically fixed to both sides of the second drive wheel. The second connecting seat is fixed to the bottom surface of the side plate. A second cavity is provided inside the second connecting seat. The second limiting mechanism is located inside the second cavity. A second connecting shaft is installed on the second drive wheel. The second connecting shaft is rotatably connected to the second connecting seat. Gears are symmetrically fixed to the second connecting shaft. The gears are located inside the second cavity. The second limiting mechanism is adapted to the gears.

[0009] Optionally, the second limiting mechanism includes a first electric telescopic rod fixedly connected to the top surface of the second cavity, a third connecting seat fixedly connected to the bottom surface of the first electric telescopic rod, the bottom surface of the third connecting seat being provided with a toothed groove, the toothed groove being adapted to the gear, and the first electric telescopic rod being electrically connected to the controller.

[0010] Optionally, the protection mechanism includes a second drive unit fixedly connected to the first slide groove. The second drive unit is fixedly connected to a fourth connecting seat. The top surface of the fourth connecting seat is provided with a first groove. A second connecting rod is hinged in the first groove. The end of the second connecting rod away from the fourth connecting seat is provided with a second groove. A third connecting rod is hinged in the second groove. A protective ring is fixedly connected to the end of the third connecting rod away from the second groove. One of the protective rings is provided with male connectors at both ends, and the other protective ring is provided with female connectors at both ends. The male connectors and female connectors located on the same side of the protective rings are compatible.

[0011] Optionally, the second drive unit includes a second motor fixedly connected to the bottom surface of the first slide groove, a second lead screw fixedly connected to the output shaft of the second motor, the top surface of the second lead screw being rotatably connected to the top surface of the first slide groove, a slider threadedly connected to the second lead screw, the slider being fixedly connected to the fourth connecting seat, and the second motor being electrically connected to the controller.

[0012] Optionally, a resistance adjustment knob and a height adjustment knob are respectively provided on one side of the first connecting rod, and a fixed position knob is provided on the other side of the first connecting rod. The resistance adjustment knob, the height adjustment knob and the fixed position knob are electrically connected to the controller.

[0013] Optionally, height-adjustable handrails are symmetrically estimated on both sides of the top surface of the first connecting rod.

[0014] This invention discloses the following technical effects: A support plate serves as a load-bearing platform, with drive systems mounted on both side plates; a first limiting mechanism adjusts the resistance of the first drive wheel, and a second drive mechanism limits the second drive wheel; a speed sensor monitors the movement speed in real time, and when an abnormality is detected (such as too fast / unstable), the controller simultaneously activates the first and second limiting mechanisms, locking the first and second drive wheels respectively; the protection mechanism slides to the waist position via a first groove, forming a protective support. The first drive wheel decelerates through frictional resistance adjustment, and the second drive wheel is forcibly stopped by gear locking, forming a double-insurance braking system; the protective ring quickly rises to the waist position, dispersing impact force through its ring structure to prevent direct fall impact. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0016] Fig. 1 This is a schematic diagram of the elderly fall prevention assist device of the present invention;

[0017] Fig. 2 This is a schematic diagram of the structure of the first limiting mechanism and the second driving mechanism of the present invention;

[0018] Fig. 3 This is a side view of the first limiting mechanism of the present invention.

[0019] In the diagram: 1. Support plate; 2. Side plate; 3. First drive wheel; 4. Second drive wheel; 5. First connecting rod; 6. Speed ​​sensor; 7. First slide groove; 8. First connecting seat; 9. First connecting shaft; 10. First connecting plate; 11. Second slide groove; 12. Friction pad; 13. First motor; 14. First lead screw; 15. Second connecting plate; 16. Spring; 17. Second connecting seat; 18. Second connecting shaft; 19. Gear; 20. First electric telescopic rod; 21. Third connecting seat; 22. Fourth connecting seat; 23. First groove; 24. Second connecting rod; 25. Second groove; 26. Third connecting rod; 27. Protective ring; 28. Male connector; 29. ​​Second motor; 30. Second lead screw; 31. Slider; 32. Resistance adjustment knob; 33. Height adjustment knob; 34. Fixed position knob; 35. Height adjustment handrail; 36. Counterweight. Detailed Implementation

[0020] With the accelerating aging of the global population, falls among the elderly have become a major public health challenge. According to the World Health Organization, approximately 28%-45% of people aged 65 and over experience a fall each year. Falls not only cause acute injuries such as fractures and traumatic brain injury, but also trigger a vicious cycle of "fall-fear-reduced activity-functional decline," severely impacting the quality of life and independent living abilities of the elderly. Against this backdrop, the technological development and industrialization of fall prevention assistive devices have become a core issue in the global health technology field.

[0021] Current fall prevention devices have formed a dual-track development pattern of "traditional devices + intelligent systems," and can be divided into the following categories based on technological approaches:

[0022] Traditional mechanical auxiliary equipment

[0023] Walking aids / crutches: These reduce the risk of falls through physical support. For example, quadrupedal walking aids can improve stability by 30%, but they suffer from being bulky and lacking portability. Laufburg Medical in Germany has developed a carbon fiber walking aid that weighs only 1.2kg and features an ergonomic design for enhanced grip comfort.

[0024] Anti-slip footwear: It adopts special rubber outsole (friction coefficient ≥0.6) and cushioned midsole. For example, the elderly sports shoes developed by Asics in Japan are adapted through 3D foot shape scanning to reduce the risk of foot slippage.

[0025] Age-friendly furniture: such as toilet chairs with armrests (load-bearing capacity ≥100kg) and height-adjustable kitchen countertops, eliminating physical hazards through environmental modifications. A renovation case in a Shanghai community shows that anti-slip floor treatment (friction coefficient ≥0.6) + widening of passageways to 80cm can improve traffic efficiency by 40%.

[0026] Wearable smart devices

[0027] Fall detection wristbands / watches: Integrating a three-axis accelerometer and gyroscope, they identify abnormal postures through gait analysis algorithms. The fall detection feature on the Apple Watch Series 5 automatically triggers an emergency call if there is no response for 60 seconds, with a positioning accuracy of up to 5 meters.

[0028] Smart airbags: For example, the French Helite Hip'Air waist belt uses a gyroscope to sample 1000 times per second, completing airbag inflation within 200ms and absorbing 80% of the impact force. The domestic Active Protective smart waist belt uses 60ms inflation technology, reducing hip impact force to 1 / 10.

[0029] Inertial sensing system: The Baiobit wearable system uses a sensor array located at the L5 position of the waist to collect three-dimensional acceleration and angular velocity data in real time. Combined with AI algorithms, it generates gait parameters (step speed, stride length variation coefficient, etc.) to accurately assess the risk of falling.

[0030] Environmental monitoring system

[0031] Computer vision solution: Analyzes camera video streams using deep learning algorithms to identify abnormal stillness (such as inactivity for 10 minutes) or unbalanced postures in the elderly. The VLT system at Yokohama National University in Japan achieves a fall detection accuracy of 0.89 using 3D motion capture and body accelerometers.

[0032] IoT sensor networks: Integrating multimodal sensors such as infrared, barometric pressure, and vibration sensors to build a home environment monitoring network. For example, Vayyar's on-chip radar system generates 4D point clouds through 46 antennas to track human posture and position in real time.

[0033] Smart carpets / mats: Employing piezoelectric sensor arrays, they provide early warnings of fall risk based on changes in gait pressure distribution. Smart mats deployed at a US nursing home have reduced fall response time to within 15 minutes.

[0034] Active intervention system

[0035] Balance training robots: such as the Lokomat robot from Hocoma in Switzerland, improve the balance of older adults through weight-bearing walking training. Clinical data shows that six months of multi-component exercise training can increase the walking speed of frail older adults by 15% and reduce the risk of falls by 30%.

[0036] Virtual haptic feedback system: The VLT system developed by Yokohama National University in Japan provides directional feedback when it detects swaying through a fingertip vibration haptic device, reducing postural swaying in volunteers aged 60-90 by 40%.

[0037] Electromyography (EMG) biofeedback device: By acquiring and providing real-time feedback of surface electromyography signals, it guides older adults in targeted muscle strength training. Studies have shown that localized mechanical vibration (rMV) training can significantly improve postural stability in older adults (p<0.01).

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] Reference Figs. 1 to 3 As shown, this embodiment provides an elderly fall prevention assist device, including a support plate 1, with side plates 2 symmetrically fixed to both sides of the support plate 1. A first drive wheel 3 and a second drive wheel 4 are respectively installed on the bottom surface of the side plates 2. A first limiting mechanism is installed outside the first drive wheel 3, and a second limiting mechanism is installed outside the second drive wheel 4. A first connecting rod 5 is fixed between the two side plates 2. The first connecting rod 5 is hollow and has a controller. The controller is electrically connected to the first limiting mechanism and the second limiting mechanism respectively. A speed sensor 6 is provided on the bottom surface of the side plate 2. The speed sensor 6 is electrically connected to the controller. A first sliding groove 7 is provided on the opposite inner side of the side plate 2. A protective mechanism is slidably connected in the first sliding groove 7.

[0041] Support plate 1 serves as a load-bearing platform, while side plates 2 house the drive system. A first limiting mechanism adjusts the resistance of the first drive wheel 3, and a second drive mechanism limits the movement of the second drive wheel 4. A speed sensor 6 monitors the movement speed in real time. Upon detecting an anomaly (such as excessive speed or instability), the controller simultaneously activates both the first and second limiting mechanisms, locking the first drive wheel 3 and the second drive wheel 4 respectively. The protective mechanism slides to the waist position via the first groove 7, forming a protective support. The first drive wheel 3 decelerates through frictional resistance adjustment, while the second drive wheel 4 is forcibly stopped by gear 19, forming a double-insurance braking system. The protective ring 27 quickly rises to the waist position, dispersing impact force through its ring structure to prevent direct fall impact.

[0042] In a further optimized design, first connecting seats 8 are installed on both sides of the first drive wheel 3. The first connecting seats 8 are fixedly connected to the bottom surface of the side plate 2. A first cavity is provided inside the first connecting seat 8. A first limiting mechanism is located inside the first cavity. A first connecting shaft 9 is installed on the first drive wheel 3. The first connecting shaft 9 is rotatably connected to the first connecting seat 8. The first limiting mechanism is located above the first connecting shaft 9.

[0043] The first limiting mechanism is used to adjust the resistance of the first drive wheel 3, thereby achieving stepless resistance adjustment.

[0044] The scheme is further optimized. The first limiting mechanism includes a first connecting plate 10 symmetrically fixed in the first cavity. The two first connecting plates 10 are provided with a second sliding groove 11 on their opposite inner sides. A friction pad 12 is slidably connected between the two second sliding grooves 11. The friction pad 12 abuts against the first drive wheel 3. The side of the friction pad 12 away from the first drive wheel 3 abuts against a first driving part. The first driving part is fixed to the first cavity.

[0045] The second drive unit is used to adjust the frictional resistance between the friction pad 12 and the first drive wheel 3.

[0046] In a further optimized design, the first drive unit includes a first motor 13 fixedly connected to the inner wall of the first cavity. The output shaft of the first motor 13 is fixedly connected to a first lead screw 14. The first lead screw 14 is threadedly connected to a second connecting plate 15. The second connecting plate 15 is slidably connected between two first connecting plates 10. A spring 16 is fixedly connected to the side of the second connecting plate 15 away from the first motor 13. The spring 16 abuts against a friction pad. The first motor 13 is electrically connected to the controller.

[0047] When the first drive wheel 3 rotates, the first motor 13 drives the lead screw to rotate, and the second connecting plate 15 compresses the spring 16 to push the friction pad 12 tightly against the wheel surface. The controller adjusts the motor output according to the signal from the speed sensor 6, dynamically adjusting the friction resistance. Stepless resistance adjustment is achieved through mechanical friction damping, which ensures normal walking assistance and can quickly brake in case of stalling to prevent the drive wheel from slipping out of control.

[0048] In a further optimized design, second connecting seats 17 are symmetrically fixed to both sides of the second drive wheel 4. The second connecting seats 17 are fixed to the bottom surface of the side plate 2. A second cavity is provided inside the second connecting seat 17. The second limiting mechanism is located inside the second cavity. A second connecting shaft 18 is installed on the second drive wheel 4. The second connecting shaft 18 is rotatably connected to the second connecting seat 17. Gears 19 are symmetrically fixed to the second connecting shaft 18. The gears 19 are located inside the second cavity. The second limiting mechanism is adapted to the gears 19.

[0049] When the device needs to stop moving, the second drive mechanism engages with gear 19 to stop gear 19 from rotating.

[0050] Further optimization of the scheme: the second limiting mechanism includes a first electric telescopic rod 20 fixedly connected to the top surface of the second cavity, a third connecting seat 21 fixedly connected to the bottom surface of the first electric telescopic rod 20, the bottom surface of the third connecting seat 21 is provided with a tooth groove, the tooth groove is adapted to the gear 19, and the first electric telescopic rod 20 is electrically connected to the controller.

[0051] When the second drive wheel 4 rotates, gear 19 rotates synchronously. When locking is required, the first electric telescopic rod 20 pushes the third connecting seat 21 downward, and the tooth groove meshes with gear 19 to form a mechanical lock. The rigid meshing design of gear 19 and tooth groove achieves millisecond-level emergency braking, which is more reliable than electromagnetic braking and avoids the risk of power failure.

[0052] The scheme is further optimized. The protection mechanism includes a second drive unit fixed in the first slide groove 7. The second drive unit is fixed to a fourth connecting seat 22. The top surface of the fourth connecting seat 22 is provided with a first groove 23. A second connecting rod 24 is hinged in the first groove 23. The end of the second connecting rod 24 away from the fourth connecting seat 22 is provided with a second groove 25. A third connecting rod 26 is hinged in the second groove 25. A protective ring 27 is fixed to the end of the third connecting rod 26 away from the second groove 25. One of the protective rings 27 is provided with male connectors 28 at both ends. The other protective ring 27 is provided with female connectors at both ends. The male connectors 28 and female connectors located on the same side of the protective rings 27 are compatible.

[0053] In a further optimized design, the second drive unit includes a second motor 29 fixedly connected to the bottom surface of the first slide groove 7. The output shaft of the second motor 29 is fixedly connected to a second lead screw 30. The top surface of the second lead screw 30 is rotatably connected to the top surface of the first slide groove 7. A slider 31 is threadedly connected to the second lead screw 30. The slider 31 is fixedly connected to the fourth connecting seat 22. The second motor 29 is electrically connected to the controller.

[0054] The second motor 29 drives the lead screw to rotate, and the slider 31 drives the fourth connecting seat 22 to rise and fall, adjusting the height of the protective ring 27. The hinged second and third connecting rods 26 enable multi-angle adjustment, and the male and female joints close quickly to form a ring-shaped protection. Through mechanical lifting and hinge structure, three-dimensional spatial posture adjustment is achieved to adapt to different heights and body types, providing waist-hugging protection and forming a cushioning support in the event of a fall.

[0055] In a further optimized design, a resistance adjustment knob 32 and a height adjustment knob 33 are respectively provided on one side of the first connecting rod 5, and a fixed position knob 34 is provided on the other side of the first connecting rod 5. The resistance adjustment knob 32, the height adjustment knob 33 and the fixed position knob 34 are electrically connected to the controller.

[0056] The resistance adjustment knob 32 controls the preload of the spring 16 and adjusts the pressure of the friction pad 12; the height adjustment knob 33 drives the second lead screw 30 to change the position of the protective ring 27; the fixed position knob 34 locks the second drive wheel 4.

[0057] Further optimization of the design: the top surface of the first connecting rod 5 is estimated to have symmetrical height-adjustable handrails 35 on both sides.

[0058] It provides upper limb support points to assist standing / walking, and forms a double protection with the lumbar protection ring 27 to enhance overall stability.

[0059] A counterweight 36 is fixed to the bottom outer side of the side plate 2 to increase the stability of the device during movement.

[0060] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0061] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A fall prevention assist device for the elderly, characterized in that: The system includes a support plate (1), on which side plates (2) are symmetrically fixed. A first drive wheel (3) and a second drive wheel (4) are respectively installed on the bottom surface of the side plates (2). A first limiting mechanism is installed outside the first drive wheel (3), and a second limiting mechanism is installed outside the second drive wheel (4). A first connecting rod (5) is fixed between the two side plates (2). The first connecting rod (5) is hollow and has a controller. The controller is electrically connected to the first limiting mechanism and the second limiting mechanism respectively. A speed sensor (6) is provided on the bottom surface of the side plate (2). The speed sensor (6) is electrically connected to the controller. A first sliding groove (7) is provided on the opposite inner side of the side plate (2). A protective mechanism is slidably connected in the first sliding groove (7).

2. The fall prevention assist device for the elderly according to claim 1, characterized in that: First connecting seats (8) are installed on both sides of the first drive wheel (3). The first connecting seats (8) are fixed to the bottom surface of the side plate (2). The first connecting seat (8) has a first cavity. The first limiting mechanism is located in the first cavity. The first driving wheel (3) is equipped with a first connecting shaft (9). The first connecting shaft (9) is rotatably connected to the first connecting seat (8). The first limiting mechanism is located above the first connecting shaft (9).

3. The fall prevention assist device for the elderly according to claim 2, characterized in that: The first limiting mechanism includes a first connecting plate (10) symmetrically fixed in the first cavity. The two first connecting plates (10) are provided with a second sliding groove (11) on their opposite inner sides. A friction pad (12) is slidably connected between the two second sliding grooves (11). The friction pad (12) abuts against the first drive wheel (3). The side of the friction pad (12) away from the first drive wheel (3) abuts against a first driving part. The first driving part is fixed to the first cavity.

4. The fall prevention assist device for the elderly according to claim 3, characterized in that: The first drive unit includes a first motor (13) fixedly connected to the inner wall of the first cavity. The output shaft of the first motor (13) is fixedly connected to a first lead screw (14). The first lead screw (14) is threadedly connected to a second connecting plate (15). The second connecting plate (15) is slidably connected between two first connecting plates (10). A spring (16) is fixedly connected to the side of the second connecting plate (15) away from the first motor (13). The spring (16) abuts against the friction pad (12). The first motor (13) is electrically connected to the controller.

5. The fall prevention assist device for the elderly according to claim 1, characterized in that: The second drive wheel (4) is symmetrically fixed with a second connecting seat (17) on both sides. The second connecting seat (17) is fixed to the bottom surface of the side plate (2). The second connecting seat (17) is provided with a second cavity. The second limiting mechanism is located in the second cavity. The second drive wheel (4) is mounted with a second connecting shaft (18). The second connecting shaft (18) is rotatably connected to the second connecting seat (17). The second connecting shaft (18) is symmetrically fixed with a gear (19). The gear (19) is located in the second cavity. The second limiting mechanism is adapted to the gear (19).

6. The fall prevention assist device for the elderly according to claim 5, characterized in that: The second limiting mechanism includes a first electric telescopic rod (20) fixedly connected to the top surface of the second cavity. A third connecting seat (21) is fixedly connected to the bottom surface of the first electric telescopic rod (20). The bottom surface of the third connecting seat (21) is provided with a toothed groove, which is adapted to the gear (19). The first electric telescopic rod (20) is electrically connected to the controller.

7. The fall prevention assist device for the elderly according to claim 1, characterized in that: The protection mechanism includes a second drive unit fixed in the first slide groove (7), the second drive unit is fixed with a fourth connecting seat (22), the top surface of the fourth connecting seat (22) is provided with a first groove (23), a second connecting rod (24) is hinged in the first groove (23), the end of the second connecting rod (24) away from the fourth connecting seat (22) is provided with a second groove (25), a third connecting rod (26) is hinged in the second groove (25), a protective ring (27) is fixed at the end of the third connecting rod (26) away from the second groove (25), one of the protective rings (27) is provided with male connectors (28) at both ends, and the other protective ring (27) is provided with female connectors at both ends, and the male connectors (28) and the female connectors located on the same side of the protective rings (27) are compatible.

8. The fall prevention assist device for the elderly according to claim 7, characterized in that: The second drive unit includes a second motor (29) fixedly connected to the bottom surface of the first slide groove (7). The output shaft of the second motor (29) is fixedly connected to a second lead screw (30). The top surface of the second lead screw (30) is rotatably connected to the top surface of the first slide groove (7). A slider (31) is threadedly connected to the second lead screw (30). The slider (31) is fixedly connected to the fourth connecting seat (22). The second motor (29) is electrically connected to the controller.

9. The fall prevention assist device for the elderly according to claim 1, characterized in that: The first connecting rod (5) is provided with a resistance adjustment knob (32) and a height adjustment knob (33) on one side, and a fixed position knob (34) on the other side. The resistance adjustment knob (32), the height adjustment knob (33) and the fixed position knob (34) are electrically connected to the controller.

10. The fall prevention assist device for the elderly according to claim 1, characterized in that: The top surface of the first connecting rod (5) is symmetrically provided with height-adjustable handrails (35).

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