Buffering and damping assembly, anti-falling seat for osteoporosis patient and use method of anti-falling seat

Abstract

The invention belongs to the technical field of medical auxiliary tools, particularly relates to a buffering and damping assembly, an anti-falling seat for an osteoporosis patient and a use method of the anti-falling seat, and aims to solve the problem that an existing active anti-falling seat generates rigid impact at the moment of triggering support and easily causes secondary injury to the osteoporosis patient. According to the seat, efficient buffering and damping are achieved through the buffering and damping assembly, the seat comprises an arc-shaped hydraulic cylinder, an arc-shaped rod body, a hydraulic tappet and a reset spring, and impact energy is converted into heat energy to be dissipated; the seat is further provided with a supporting structure, a protection structure and a driving structure, and an anti-falling protection mechanism is formed. The millimeter wave detection radar monitors gravity center shift of a patient in real time, the anti-roll bar is driven to unfold and support, and the L-shaped handrail synchronously moves upwards for protection; the seat further has intelligent monitoring and alarming functions, and an audible and visual alarm gives an alarm when the patient turns over on one side; the design of the sliding plate body and the blocking rod provides additional protection to prevent the patient from leaning forward and falling down; according to the seat, the safety and the comfort degree of the osteoporosis patient are improved.

Description

Technical Field

[0001] This invention relates to the field of medical assistive device technology, and in particular to a cushioning and shock-absorbing component and a fall-prevention seat for osteoporosis patients, and the method of using them. Background Technology

[0002] Osteoporosis is a common bone disease that causes decreased bone density and increased fragility, making patients highly susceptible to fractures. For osteoporosis patients, falls in daily life are often one of the main causes of fractures.

[0003] Existing fall protection seats are mainly divided into passive stabilization and active support types. Passive types primarily prevent tipping by increasing the chassis area, but they are cumbersome to move and prone to causing tripping. Active support seats, which have emerged in recent years, can deploy support rods upon tipping over, but they have the following significant drawbacks:

[0004] 1. In pursuit of rapid response, current designs often use anti-roll bars that violently slam into the ground under the drive of powerful springs to achieve support. This instantaneous rigid braking generates high-frequency vibrations and reverse impact forces. For most people, this is only a slight tremor, but for extremely vulnerable osteoporosis patients, this violent jolt originating from the safety device itself can easily induce compression fractures or joint damage.

[0005] 2. Most seat support legs unfold in an arc along their axis, while existing shock absorbers are mostly linear (such as straight hydraulic rods). Forcing linear cushioning during the arc movement will result in uneven torque transmission, excessive resistance in the initial unfolding stage affecting response speed, and insufficient cushioning stroke at the moment of ground contact, failing to achieve smooth energy absorption throughout the entire process. Summary of the Invention

[0006] This invention stems from a practical survey of the daily fall prevention needs of osteoporosis patients: During the research and development process, we found that traditional seats lack active protection, often leading to fractures due to rollovers, and their insufficient cushioning increases the risk of impact. To solve these engineering problems, we designed a seat that integrates hydraulic cushioning and intelligent triggering, prioritizing reliable mechanical principles and simple linkage.

[0007] To address impact cushioning, we introduced an arc-shaped hydraulic assembly, including a cylinder, rod, tappet, and spring. This design is based on fluid mechanics: as the rod slides, the tappet compresses the hydraulic fluid, generating damping and converting the impact into heat energy. The advantage of this design is that it logically balances cushioning and recovery, reducing rebound impact and improving patient comfort compared to the simple springs used in existing technologies.

[0008] To prevent tipping, we developed a support and protection structure. Millimeter-wave radar monitors deviations, triggering electromagnetic unlocking, which in turn springs the anti-tilt bar to deploy and the armrests to move upwards. This mechanism stems from sensor-mechanical coupling: radar provides real-time data, while the mechanics ensure rapid support. Compared to existing passive wheelchairs, the advantage of this design is active intervention, logically reducing response delay and improving safety.

[0009] The forward tilt barrier is manually adjustable via a sliding plate and a strut, forming an additional barrier. The development approach behind this design is iterative verification: from problem analysis to prototype testing, ensuring each component is necessary and works in tandem, avoiding redundancy, and ultimately achieving efficient and reliable medical assistance, enhancing its practical value compared to existing technologies.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] A shock-absorbing and damping component includes an arc-shaped hydraulic cylinder, wherein an arc-shaped rod is slidably and sealed inside the arc-shaped hydraulic cylinder, and rubber pad I and rubber pad II are fixedly sleeved on the outer wall of the arc-shaped rod.

[0012] It also includes a buffer structure to cushion the sliding of the arc-shaped rod. The buffer structure includes a hydraulic tappet that slides in a sealed arc-shaped hydraulic cylinder. The hydraulic tappet is fixedly sleeved on the outer wall of the arc-shaped rod.

[0013] When the arc-shaped rod slides, the hydraulic tappet squeezes the hydraulic oil in the arc-shaped hydraulic cylinder to generate a damping force to buffer the movement of the arc-shaped rod.

[0014] In one possible design, the buffer structure further includes a return spring, the two ends of which are fixedly connected to the arc-shaped hydraulic cylinder and the rubber pad II respectively through spring seats, and are used to drive the rubber pad II to return to its original position after the arc-shaped rod drives the rubber pad I to slide and squeeze the rubber pad II.

[0015] The top of the arc-shaped hydraulic cylinder is fixedly connected to a hydraulic pipeline, and the top end of the hydraulic pipeline is fixedly connected to a fixed sleeve. The inner diameter of the hydraulic pipeline is in the range of 0.5 mm to 0.8 mm, and it is used to generate damping with a limited flow rate.

[0016] When the arc-shaped rod moves the rubber pad I to slide outward, the rubber pad I squeezes the return spring through the rubber pad II. The rubber pad II simultaneously drives the hydraulic push rod to squeeze the hydraulic oil in the arc-shaped hydraulic cylinder. The hydraulic oil flows into the fixed sleeve through the hydraulic pipeline, generating a damping force that converts the impact energy into heat energy, thereby achieving buffering and shock absorption of the arc-shaped rod's sliding.

[0017] A fall-prevention seat for osteoporosis patients includes four sets of the above-mentioned cushioning and shock-absorbing components, and also includes a chair frame. The chair frame includes two legs I and two legs II. A crossbar II is fixed between each of the two legs I and the two legs II. A crossbar I is fixed to one side of each of the two legs I. One end of each of the two crossbars I is fixedly connected to the corresponding leg II.

[0018] The chair frame is provided with a seat cushion panel and a backrest panel. The backrest panel is fixed between two support legs I, and the seat cushion panel is disposed between two support legs I and support legs II.

[0019] The four arc-shaped hydraulic cylinders are respectively fixed on the side of the two support legs I and II near the backrest plate, the four fixed sleeves are respectively fixed on the side of the two support legs I and II near the backrest plate, and the four arc-shaped rods slide through the corresponding support legs I and II.

[0020] It also includes four sets of support structures, which are respectively set on the side of the two support legs I and support legs II away from the seat cushion, and are used to support the chair frame when the chair frame tilts to the side. The support structure includes an anti-tilt bar rotatably connected to support leg II.

[0021] It also includes two sets of protective structures for protecting the patient when the anti-tilt bar is deployed. The protective structure includes an L-shaped handrail, one end of which is slidably connected to the corresponding support leg I via a slide rail. A vertical rod is fixed to the bottom end of the L-shaped handrail and slides through the support leg II.

[0022] It also includes two sets of drive structures for driving the anti-roll bar to deploy, and the drive structure includes a fixed rod II.

[0023] In one possible design, the drive structure further includes a sliding push rod that slides through the crossbar I, the two ends of the fixed rod II are fixedly connected to two adjacent anti-tilt rods, a magnet I is embedded on the side of the fixed rod II near the crossbar I, and a magnet II is fixed on the end of the sliding push rod near the fixed rod II. A magnetic attraction force is generated between the magnet I and the magnet II to keep the anti-tilt rods vertical.

[0024] The outer wall of the sliding push rod is fitted with a tension spring I. One end of the tension spring I is fixedly connected to the crossbar I, and the other end is fixedly connected to the sliding push rod. It is used to push the fixed rod II and the anti-tilt rod to rotate outward by the tension of the tension spring I.

[0025] The top of the sliding push rod is provided with a insertion groove, and a insertion rod is slidably connected inside the crossbar I. The bottom end of the insertion rod is inserted into the insertion groove to limit the sliding push rod.

[0026] A magnetic ring is fixedly sleeved on the outer wall of the plug rod, and an annular electromagnet is fixed on the top of the crossbar I. A repulsive force is generated between the magnetic ring and the annular electromagnet, which is used to drive the plug rod to move upward after the annular electromagnet is energized, so as to move out of the plug groove and release the brake on the sliding push rod.

[0027] One end of the arc-shaped rod is fixedly connected to the anti-tilt rod, and is used to drive the arc-shaped rod to rotate when the anti-tilt rod rotates;

[0028] When the chair frame tilts to the side, the annular electromagnet is energized, the plug rod moves upward to release the limit, and the sliding push rod, under the action of tension spring I, pushes the fixed rod II and the anti-tilt rod to flip and support the chair frame. At the same time, the arc-shaped rod rotates to drive the buffer and shock absorption components to work, buffering the supporting action of the anti-tilt rod when the chair frame tilts to the side.

[0029] In one possible design, the support structure further includes a blocking block fixed to the top of the anti-roll bar, and a limiting groove is provided on one side of the outrigger II. The blocking block slides into the limiting groove to limit the rotation of the anti-roll bar.

[0030] The bottom end of the anti-roll bar is rotatably connected to a roller to reduce the friction between the anti-roll bar and the ground.

[0031] In one possible design, the protective structure further includes a fixing rod I, which is located above the fixing rod II and whose two ends are fixedly connected to two corresponding anti-tilt rods;

[0032] The bottom of the L-shaped armrest is fixed with two protective rods. The bottom ends of the two protective rods are slidably inserted into the seat cushion and fixed with a connecting plate. Multiple telescopic sleeves are slidably inserted into the connecting plate. The multiple telescopic sleeves are rotatably sleeved on the outer wall of the fixed rod I.

[0033] When the anti-tilt bar rotates, the fixed rod I moves the connecting plate and the L-shaped handrail upward through the telescopic sleeve to provide lateral protection for the patient.

[0034] In one possible design, each of the two support legs I and II is provided with a support plate, which is fixedly connected to the bottom of the seat cushion by bolts.

[0035] The backrest panel is provided with a lumbar pad at the bottom, and the lumbar pad is fixedly connected to the two support legs I;

[0036] A millimeter-wave detection radar is fixed to the bottom of the seat cushion. The millimeter-wave detection radar is electrically connected to a ring electromagnet and is used to monitor the angle of the patient's center of gravity shift. When the center of gravity shifts by more than 15°, the ring electromagnet is activated.

[0037] In one possible design, the outer walls of both L-shaped handrails are fitted with protective cotton sleeves;

[0038] One of the outriggers I is fixed to the top of an audible and visual alarm, which is electrically connected to a millimeter-wave detection radar.

[0039] The outer wall of the tension spring I is fitted with an accordion-style protective cover, and the two ends of the accordion-style protective cover are fixedly connected to the crossbar I and the sliding push rod, respectively.

[0040] In one possible design, the side of the seat cushion away from the lumbar pad is provided with a sliding guide groove, and a sliding plate is slidably connected in the sliding guide groove. One end of the sliding plate is fixed to the inner wall of the sliding guide groove by a tension spring II through a spring seat.

[0041] A rubber sleeve is fixed inside the sliding plate, a movable push rod passes through the rubber sleeve, a blocking rod is fixed at the top of the movable push rod, and two cylindrical tubes are sleeved on the outer wall of the blocking rod.

[0042] The movable strut can be adjusted in height via the rubber sleeve, and the cylindrical tube can move laterally. When the patient sits on the seat, the movable strut is pulled upward, and the cylindrical tube unfolds to both sides. The blocking rod and the cylindrical tube protect the patient from falling forward when standing up. When the patient stands up from the seat, the cylindrical tube is pushed inward, and the movable strut moves downward to reset.

[0043] This application discloses a method for using a fall-prevention seat for osteoporosis patients, comprising the following steps:

[0044] S1. Initialization state: The anti-tilt bar is placed in the vertical storage state and double-locked by the attraction of magnet I and magnet II and the insertion of the plug rod into the plug slot; the L-shaped handrail is in the low position and the sliding plate is retracted into the sliding guide groove.

[0045] S2. Real-time monitoring: The millimeter-wave detection radar at the bottom of the seat cushion monitors the angle of the patient's center of gravity shift in real time. When the angle of the center of gravity shift exceeds a preset threshold, the millimeter-wave detection radar sends a trigger signal to the ring electromagnet and the audible and visual alarm.

[0046] S3. Unlocking and Deploying: After receiving the trigger signal, the ring electromagnet is energized to generate a magnetic field, which repulses the magnetic ring and drives the plug rod to disengage from the plug groove, releasing the limit on the sliding push rod; the sliding push rod moves under the tension of tension spring I, pushing the anti-roll bar to flip outward until the blocking block at the top of the anti-roll bar slides to the end of the limiting groove of the support leg II.

[0047] S4, Linkage Protection: As the anti-tilt bar flips outward, the anti-tilt bar drives the fixed rod I to rotate. The fixed rod I drives the connecting plate and L-shaped handrail to slide upward along the support leg I and support leg II to the protection position through the telescopic sleeve rod.

[0048] S5. Buffering and shock absorption: While the anti-roll bar is flipping, it drives the arc-shaped bar to slide in the arc-shaped hydraulic cylinder. The rubber pad I on the arc-shaped bar pushes the hydraulic tappet to move through the rubber pad II and squeezes the hydraulic oil in the arc-shaped hydraulic cylinder, so that the hydraulic oil flows through the hydraulic pipeline to generate fluid damping force, which buffers the unfolding action of the anti-roll bar.

[0049] S6. Reset: After use, manually push the anti-tilt bar back to the vertical position so that magnet I and magnet II re-engage and the plug rod is reinserted into the plug slot; the reset spring releases its elastic force to drive the arc-shaped rod and hydraulic push rod to reset, and the L-shaped handrail moves down to the initial position as the anti-tilt bar resets.

[0050] Beneficial effects:

[0051] This invention abandons the traditional linear buffer scheme and adopts a design with an arc-shaped hydraulic cylinder and an arc-shaped rod. This design is geometrically perfectly concentric with the rotation trajectory of the anti-roll bar, eliminating radial force and the risk of jamming during movement. It converts the mechanical kinetic energy of the anti-roll bar's rapid deployment and the potential energy of its rollover upon impact into the fluid heat energy of the hydraulic oil flowing through the micropores. This avoids the rigid vibration caused by the support leg's instantaneous impact with the ground, effectively preventing osteoporosis patients from suffering secondary fractures due to excessive force from the safety mechanism.

[0052] In this invention, the synergistic effect of the arc-shaped hydraulic cylinder, arc-shaped rod, hydraulic tappet, and return spring in the buffer and shock absorption assembly achieves a highly efficient buffer and shock absorption function. When the seat is impacted by an external force or the patient's body sways, the arc-shaped rod slides inside the arc-shaped hydraulic cylinder, driving the hydraulic tappet to squeeze the hydraulic oil, generating a damping force that converts the impact energy into heat energy for dissipation. At the same time, the elastic effect of the return spring further absorbs and disperses the impact force, effectively reducing the swaying and impact of the seat, providing the patient with a more stable and comfortable sitting environment, and reducing the risk of the patient falling due to seat swaying.

[0053] In this invention, the combination of the support structure, protective structure, and drive structure forms a reliable anti-fall protection mechanism. The millimeter-wave detection radar can monitor the patient's center of gravity shift angle in real time. When it detects that the patient is about to fall, it quickly activates the ring electromagnet to drive the anti-tilt bar to unfold and support the chair frame. The rolling wheels at the bottom of the anti-tilt bar reduce the friction with the ground, making the support faster and more stable. At the same time, the L-shaped armrests in the protective structure move upward synchronously when the anti-tilt bar unfolds, protecting the patient from the side and preventing the patient from falling off the chair frame. This comprehensive anti-fall protection mechanism can take timely measures before the patient falls, effectively protecting the patient's safety.

[0054] In this invention, the combination of millimeter-wave detection radar and audible and visual alarm realizes the intelligent monitoring and alarm function of the seat. The millimeter-wave detection radar can accurately monitor the patient's center of gravity shift and issue early warning signals in a timely manner, while the audible and visual alarm can issue a loud alarm when the patient rolls over, reminding family members to provide timely rescue, thus improving the safety and practicality of the seat and providing more reliable protection for the patient.

[0055] In this invention, the design of the sliding plate and the stop bar provides additional protection when the patient stands up, preventing them from leaning forward and falling. These comfort designs take into account the actual needs of the patient, improving the patient's comfort and satisfaction when using the chair.

[0056] This invention integrates efficient cushioning and shock absorption, reliable fall protection, a comfortable seating experience, and intelligent monitoring and alarm functions. The cushioning and shock absorption components effectively reduce seat sway and impact, providing a stable sitting environment for patients. The support structure, protective structure, and drive structure work together to quickly take protective measures when the patient is about to fall, preventing injury. The comfortable seat design takes into account the actual needs of patients, improving user comfort. The intelligent monitoring and alarm functions can promptly detect abnormalities in patients and alert family members for rescue, further ensuring patient safety. Attached Figure Description

[0057] Figure 1 A three-dimensional exploded structural diagram of a buffer and shock absorption component provided by the present invention;

[0058] Figure 2 A first-view three-dimensional structural schematic diagram of a fall-prevention seat for osteoporosis patients provided by the present invention;

[0059] Figure 3 A three-dimensional structural diagram from a second perspective of an osteoporosis patient anti-fall seat provided by the present invention;

[0060] Figure 4 This is a three-dimensional exploded structural diagram of the support leg I, support leg II, and backrest panel of an osteoporosis patient anti-fall seat provided by the present invention.

[0061] Figure 5 A three-dimensional structural diagram of the support leg II, hydraulic push rod, and arc-shaped rod of an osteoporosis patient anti-fall seat provided by the present invention;

[0062] Figure 6 A cross-sectional structural schematic diagram of the support leg II and the arc-shaped hydraulic cylinder of an osteoporosis patient anti-fall seat provided by the present invention;

[0063] Figure 7This is a three-dimensional structural diagram of the anti-tipping bar, fixing bar II, and connecting plate of an osteoporosis patient anti-fall chair provided by the present invention;

[0064] Figure 8 This is a three-dimensional exploded structural diagram of the sliding push rod, the connecting rod, and the tension spring I of an osteoporosis patient anti-fall seat provided by the present invention;

[0065] Figure 9 A three-dimensional structural diagram of the fixing rod I, connecting plate and L-shaped armrest of an osteoporosis patient anti-fall seat provided by the present invention;

[0066] Figure 10 This is a three-dimensional exploded structural diagram of the sliding plate, rubber sleeve, and movable strut of an osteoporosis patient anti-fall seat provided by the present invention.

[0067] In the diagram: 1. Outrigger I; 2. Outrigger II; 3. Crossbar I; 4. Crossbar II; 5. Backrest panel; 6. Seat cushion panel; 7. Support panel; 8. Lumbar pad; 9. Anti-tilt bar; 10. Roller; 11. Arc-shaped rod; 12. Rubber pad I; 13. Rubber pad II; 14. Arc-shaped hydraulic cylinder; 15. Hydraulic push rod; 16. Return spring; 17. Fixing sleeve; 18. Hydraulic pipeline; 19. Blocking block; 20. Limiting groove; 21. L-shaped armrest; 22. Fixing rod I; 23. Telescopic sleeve rod; 24. Connecting... 25. Connecting plate body; 26. Protective rod body; 27. Vertical rod; 28. Protective cotton sleeve; 29. ​​Fixed rod II; 30. Magnet I; 31. Sliding push rod; 32. Magnet II; 33. Tension spring I; 34. Insertion groove; 35. Bellows-style protective cover; 36. Insertion rod; 37. Ring electromagnet; 38. Magnetic ring; 39. Millimeter-wave detection radar; 40. Sliding guide groove; 41. Sliding plate body; 42. Tension spring II; 43. Rubber sleeve body; 44. Movable push rod; 45. Blocking rod; 46. Cylindrical cylinder; 47. Audible and visual alarm. Detailed Implementation

[0068] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0069] In one embodiment: Refer to Figure 1A shock-absorbing and cushioning component, relating to the field of medical assistive device technology, includes an arc-shaped hydraulic cylinder 14 and an arc-shaped rod 11; the arc-shaped hydraulic cylinder 14 is one of the core components for shock absorption and cushioning. It is hollow and sealed internally, with the arc-shaped rod 11 slidingly penetrating the arc-shaped hydraulic cylinder 14 in a sealed manner. Rubber pads I 12 and II 13 are fixedly fitted onto the outer wall of the arc-shaped rod 11. Rubber pads I 12 and II 13 are made of rubber material with certain elasticity and wear resistance, with a thickness ranging from 3-8 mm and a hardness ranging from 40-60 Shore A. When the arc-shaped rod 11 slides within the arc-shaped hydraulic cylinder 14, rubber pads I 12 and II 13 can provide a certain degree of cushioning and sealing, reducing impact and hydraulic oil leakage during the sliding process.

[0070] Reference Figure 1 The buffer structure includes a hydraulic push rod 15 and a return spring 16. The hydraulic push rod 15 slides within the arc-shaped hydraulic cylinder 14 and is fixedly sleeved on the outer wall of the arc-shaped rod body 11. The two ends of the return spring 16 are fixedly connected to the arc-shaped hydraulic cylinder 14 and the side of the rubber pad II 13 that are close to each other via spring seats. The tension spring has a wire diameter ranging from 1.2 to 2.0 mm, an outer diameter ranging from 10 to 15 mm, a free length ranging from 50 to 80 mm, and an initial tension ranging from 10 to 30 Newtons. After the arc-shaped rod body 11 drives the rubber pad I 12 to slide and compress the rubber pad II 13, the return spring 16 can drive the rubber pad II 13 to return to its original position.

[0071] Reference Figure 1 A hydraulic pipeline 18 is fixedly connected to the top of the arc-shaped hydraulic cylinder 14, and a fixed sleeve 17 is fixedly connected to the top of the hydraulic pipeline 18. The inner diameter of the hydraulic pipeline 18 ranges from 0.5 mm to 0.8 mm. When the arc-shaped rod 11 drives the rubber pad I 12 to slide outward, the rubber pad I 12 compresses the return spring 16 through the rubber pad II 13. The rubber pad II 13 simultaneously drives the hydraulic push rod 15 to compress the hydraulic oil in the arc-shaped hydraulic cylinder 14. Due to the small inner diameter of the hydraulic pipeline 18, the hydraulic oil generates a large damping force when passing through, converting the impact energy into heat energy for dissipation, thereby buffering and damping the sliding of the arc-shaped rod 11.

[0072] Reference Figures 1-9 A fall-prevention seat for osteoporosis patients, relating to the field of medical assistive device technology, includes four sets of the aforementioned shock-absorbing components. It also comprises a chair frame, a support structure, a protective structure, a drive structure, and some auxiliary components. The shock-absorbing components provide cushioning and shock absorption for the seat; the chair frame forms the main frame of the seat; the support structure supports the chair frame when the patient rolls over; the protective structure protects the patient during rollover; the drive structure drives the support structure to unfold; and the auxiliary components further enhance the comfort and safety of the seat.

[0073] Reference Figures 2-4 The chair frame is the main supporting structure of the seat, including two support legs I1 and II2. A crossbar II4 is fixed between each of the two support legs I1 and II2. A crossbar I3 is fixed to one side of each of the two support legs I1, and one end of each crossbar I3 is fixedly connected to the corresponding support leg II2. The backrest panel 5 is fixed between the two support legs I1 to provide support for the patient's back. The seat cushion panel 6 is located between the two support legs I1 and II2. Support plates 7 are welded to one side of each of the two support legs I1 and II2. All four support plates 7 are bolted to the bottom of the seat cushion panel 6 for stable support. A lumbar support pad 8 is located below the backrest panel 5, and the lumbar support pad 8 is fixedly connected to the two support legs I1 to provide comfortable support for the patient's lower back.

[0074] Reference Figure 2 and Figure 3 Four arc-shaped hydraulic cylinders 14 are respectively fixed to the side of the two support legs I1 and II2 near the backrest panel 5, and four fixing sleeves 17 are respectively fixed to the side of the two support legs I1 and II2 near the backrest panel 5. Four arc-shaped rods 11 slide through the corresponding support legs I1 and II2. This installation method allows the shock-absorbing components to be tightly integrated with the chair frame, so that when the seat is subjected to external forces, the shock-absorbing components can play a timely role in reducing the swaying and impact of the seat.

[0075] Reference Figure 5 and Figure 6 The support structure includes an anti-tilt bar 9, which rotates on the side of the support leg II2 away from the backrest panel 5. This anti-tilt bar unfolds to support the chair frame in case of tipping over. A roller 10, made of rubber with a diameter of 30-50 mm, is rotatably connected to the bottom of the anti-tilt bar 9. This reduces friction between the anti-tilt bar 9 and the ground, allowing for smoother unfolding and support. A stop block 19 is fixed to the top of the anti-tilt bar 9, and a limiting groove 20 is provided on one side of the support leg II2. The stop block 19 slides into the limiting groove 20. When the anti-tilt bar 9 flips over, the engagement of the stop block 19 and the limiting groove 20 limits its rotation, ensuring that the anti-tilt bar 9 supports the chair frame at a suitable angle. The depth of the limiting groove 20 ranges from 10-20 mm, and its width matches the width of the stop block 19, ensuring stable sliding within the limiting groove 20.

[0076] Reference Figure 3 and Figure 9The protective structure includes an L-shaped handrail 21, one end of which is slidably connected to the corresponding support leg I1 via a slide rail. The slide rail is made of metal with a smooth surface to reduce frictional resistance. A vertical rod 26 is fixed to the bottom of the L-shaped handrail 21, and the vertical rod 26 slides into the support leg II2 to ensure the stability of the L-shaped handrail 21 during sliding.

[0077] Reference Figure 2 , Figure 3 and Figure 9 The protective structure also includes a fixed rod I 22, which is located above the fixed rod II 28. Both ends of the fixed rod I 22 are fixedly connected to two corresponding anti-tilt rods 9. Two protective rod bodies 25 are fixed to the bottom of the L-shaped armrest 21. The bottom ends of both protective rod bodies 25 slide through the seat cushion plate 6 and are each fixed with a connecting plate 24. Multiple telescopic sleeves 23 slide through the connecting plate 24, and these telescopic sleeves 23 are rotatably fitted onto the outer wall of the corresponding fixed rod I 22. When the anti-tilt rod 9 rotates and unfolds, it drives the fixed rod I 22 to rotate synchronously. The fixed rod I 22, through the telescopic sleeves 23, drives the connecting plate 24 and the L-shaped armrest 21 to move upwards, enabling the L-shaped armrest 21 to provide lateral protection for the patient and prevent the patient from falling off the chair frame.

[0078] Reference Figure 9 The outer walls of both L-shaped handrails 21 are fitted with protective cotton sleeves 27. The protective cotton sleeves 27 are made of soft cotton material with a thickness of 5-10 mm, which can increase the comfort of patients when in contact with the handrails, and at the same time, prevent injury to patients when they fall over.

[0079] Reference Figure 3 , Figure 4 , Figure 7 and Figure 8The driving structure includes a fixed rod II 28 and a sliding push rod 30 that slides through the crossbar I 3. Both ends of the fixed rod II 28 are fixedly connected to two adjacent anti-tilt rods 9. A magnet I 29 is fixedly embedded on the side of the fixed rod II 28 closest to the crossbar I 3. A magnet II 31 is fixed on the end of the sliding push rod 30 closest to the fixed rod II 28, and a magnetic attraction is generated between magnet I 29 and magnet II 31. In the initial state, the magnetic attraction between magnet II 31 and magnet I 29 keeps the anti-tilt rod 9 stably vertical. A tension spring I 32 is fitted on the outer wall of the sliding push rod 30. The tension spring I 32 has a wire diameter ranging from 1.0 to 1.8 mm, an outer diameter ranging from 8 to 12 mm, a free length ranging from 40 to 60 mm, and an initial tension ranging from 8 to 25 Newtons. One end of the tension spring I 32 is fixedly connected to the side of the crossbar I 3 away from the fixed rod II 28 via a spring seat, and the other end is fixedly connected to the outer wall of the sliding push rod 30 via a spring seat. When the anti-tilt bar 9 needs to be deployed, the tension of the tension spring I 32 can push the fixing bar II 28 and the anti-tilt bar 9 to rotate outward, thus supporting the chair frame.

[0080] Reference Figure 8 The sliding push rod 30 has a slot 33 at its top. A connecting rod 35 is slidably connected inside the crossbar I3. The bottom end of the connecting rod 35 engages with the slot 33 to limit the sliding push rod 30. This allows the sliding push rod 30 to limit the fixed rod II28 and the anti-tilt rod 9 through the magnetic attraction between magnet I29 and magnet II31. A magnetic ring 37 is fixedly sleeved on the outer wall of the connecting rod 35. A ring electromagnet 36 is fixedly fixed to the top of the crossbar I3, and a repulsive force is generated between the magnetic ring 37 and the ring electromagnet 36. When the ring electromagnet 36 is energized, it can drive the connecting rod 35 and the magnetic ring 37 to move upward and out of the slot 33, releasing the braking of the sliding push rod 30. The voltage range of the ring electromagnet 36 is 12-24 volts, and the current range is 0.5-2 amperes.

[0081] Initially, the sliding push rod 30 keeps the anti-tilt rod 9 vertical through the magnetic attraction between magnets II 31 and I 29. When the chair frame tilts, the annular electromagnet 36 is energized, generating a repulsive force between it and the magnetic ring 37, pushing the connecting rod 35 upward to release the restriction on the sliding push rod 30. Under the tension of the tension spring I 32, the sliding push rod 30 pushes the fixed rod II 28 and the anti-tilt rod 9 to flip outward, and the anti-tilt rod 9 supports the chair frame after flipping. At this time, the anti-tilt rod 9 rotates under the weight of the chair frame, and magnets I 29 and II 31 separate. Simultaneously, the anti-tilt rod 9 drives the arc-shaped rod 11 to rotate, and the sliding fit between the arc-shaped rod 11 and the support legs I 1 and II 2 increases the stability of the anti-tilt rod 9's rotation. The arc-shaped rod 11 drives the rubber pad I 12 to move, and the fit between the rubber pad I 12 and the rubber pad II 13 drives the hydraulic push rod 15 to squeeze the hydraulic oil in the arc-shaped hydraulic cylinder 14. After the anti-tilt bar 9 supports the chair frame, the hydraulic oil is squeezed through the hydraulic push rod 15 and enters the fixed sleeve 17 through the hydraulic line 18 to buffer the process of the anti-tilt bar 9 supporting the chair frame after it tilts to the side.

[0082] Reference Figure 3 and Figure 9 A millimeter-wave detection radar 38 is fixed to the bottom of the seat cushion 6, and the millimeter-wave detection radar 38 is electrically connected to a ring electromagnet 36. The millimeter-wave detection radar 38 can monitor the patient's center of gravity shift angle in real time, with a monitoring accuracy within ±1°. When the center of gravity shift exceeds 15° and is about to fall, the millimeter-wave detection radar 38 immediately activates the ring electromagnet 36, driving the anti-tilt bar 9 to unfold and support the chair frame. The millimeter-wave detection radar 38 operates in the 24-77 GHz frequency range, enabling it to quickly and accurately capture changes in the patient's movement state.

[0083] Reference Figure 2 and Figure 3 One of the outriggers, I1, has an audible and visual alarm 46 fixed to its top, and the alarm 46 is electrically connected to a millimeter-wave detection radar 38. When the millimeter-wave detection radar 38 detects the patient rolling over, the audible and visual alarm 46 simultaneously emits an audible alarm to alert family members to provide assistance. The sound intensity of the audible and visual alarm 46 is in the range of 80-100 decibels, and can be heard at a relatively long distance.

[0084] Reference Figure 8 The outer wall of the tension spring I32 is fitted with an accordion-style protective cover 34. The two ends of the accordion-style protective cover 34 are fixedly connected to one side of the crossbar I3 and the outer wall of the sliding rod 30, respectively. The accordion-style protective cover 34 is made of plastic and has a certain degree of flexibility and protection. It can protect the tension spring I32 and prevent dust, debris and other objects from entering the interior of the tension spring I32 and affecting its normal operation.

[0085] In another embodiment: Refer to Figure 4 and Figure 10 The structure of this embodiment is basically the same as that of the previous embodiment, except that: a sliding guide groove 39 is provided on the side of the seat cushion 6 away from the lumbar pad 8, and a sliding plate 40 is slidably connected in the sliding guide groove 39. A tension spring II 41 is fixed between one end of the sliding plate 40 and the inner wall of one side of the sliding guide groove 39 by a spring seat. The tension spring II 41 has a wire diameter range of 0.8-1.5 mm, an outer diameter range of 6-10 mm, a free length range of 30-50 mm, and an initial tension range of 5-20 Newtons. A rubber sleeve 42 is fixed inside the sliding plate 40, and a movable push rod 43 passes through the rubber sleeve 42. The movable push rod 43 can be adjusted to any height through the cooperation of the rubber sleeve 42 and the movable push rod 43. The adjustment height range of the movable push rod 43 is 20-60 mm. A blocking rod 44 is fixed to the top of the movable push rod 43. Two cylindrical tubes 45 are sleeved on the outer wall of the blocking rod 44, and the two cylindrical tubes 45 are located on both sides of the movable push rod 43.

[0086] Specifically, when the patient sits on the seat cushion 6, the movable lever 43 is pulled upwards, and the two cylindrical tubes 45 are pulled to the sides. This, along with the movable lever 43, the blocking lever 44, and the cylindrical tubes 45, protects the patient and prevents them from falling forward when standing up. Conversely, the two cylindrical tubes 45 are pushed towards the center, and the movable lever 43 is pushed downwards, making it easier for the patient to sit on or get off the seat cushion 6.

[0087] A method for using a fall-prevention seat for osteoporosis patients includes the following steps:

[0088] S1. The arc-shaped rod 11 and the arc-shaped hydraulic cylinder 14 maintain initial engagement. The return spring 16 is in a naturally extended state. The hydraulic push rod 15 is not compressed. The hydraulic oil in the arc-shaped hydraulic cylinder 14 is full and stable. The anti-tilt rod 9 is kept vertical by the magnetic attraction between magnet I 29 and magnet II 31. The plug rod 35 is inserted into the plug groove 33 of the sliding push rod 30. Double locking prevents the anti-tilt rod from being accidentally deployed. The tension spring I 32 is in a pre-stretched state. The bellows-style protective cover 34 wraps around the spring to prevent dust or foreign objects from affecting the operation. The L-shaped handrail 21 is in a low position. The protective cotton sleeve 27 naturally fits the handrail. The telescopic sleeve 23 is in a retracted state. The sliding plate 40 is retracted to the sliding guide groove 39 under the action of the tension spring II 41. When lever 43 is pressed down, the blocking lever 44 and cylindrical tube 45 are close to the seat cushion plate 6, without affecting the patient's getting in and out of the seat; the chair frame is composed of support legs I1, support legs II2 and crossbars I3 and II4 to form a stable frame, and the support plate 7 is fixed to the seat cushion plate 6 with bolts to ensure reliable load-bearing; the backrest plate 5 provides back support, and the lumbar pad 8 conforms to the patient's lumbar curve to distribute the pressure of prolonged sitting and meet the needs of osteoporosis patients who need to avoid localized pressure concentration; the dual locking mechanism (magnetic attraction + plug-in limit) ensures that the anti-tilt bar and protective structure do not interfere with the patient's activities during normal use, taking into account both safety and ease of use; the modular chair frame design and padding configuration improve comfort while ensuring structural strength and reduce the risk of discomfort for patients who sit for long periods of time;

[0089] S2. The millimeter-wave radar 38 at the bottom of the seat cushion 6 scans the patient's body posture in real time, accurately capturing the angle of center of gravity shift (the detection accuracy is adapted to the needs of osteoporosis patients who need to be alerted even for slight imbalance); when the center of gravity shift is detected to exceed 15° (preset fall threshold, triggered before the chair frame completely tilts over), the radar immediately sends an electrical signal to the ring electromagnet 36 and the audible and visual alarm 46; the 15° threshold setting is based on the fragile bones of osteoporosis patients, avoiding waiting until the chair completely tilts over before triggering, and providing 0.3-0.5 seconds of reaction time for the protective structure to deploy; the millimeter-wave radar has strong anti-interference capabilities, is not affected by clothing or light, and has a higher detection accuracy than traditional infrared sensors, reducing the probability of false triggering;

[0090] S3 and the ring electromagnet 36 generate a strong magnetic field when energized, forming a repulsive force with the magnetic ring 37 on the plug rod 35, pushing the plug rod 35 to slide upward and disengage from the plug groove 33, thus releasing the restriction on the sliding push rod 30; the tension spring I 32 releases its pre-tension force, pulling the sliding push rod 30 to move away from the fixed rod II 28; the anti-tilt rod 9 flips rapidly outward under the combined action of the spring tension and the weight of the chair frame tipping over; when the anti-tilt rod 9 flips, the top blocking block 19 slides along the limiting groove 20 of the support leg II 2; when it flips to a support angle of 60°-70° with the ground, the blocking block 19 engages with the end of the limiting groove 20, restricting further rotation and ensuring support stability; the bottom rolling wheel 10 generates rolling friction when in contact with the ground, greatly reducing the unfolding resistance, preventing the anti-tilt rod from jamming, and ensuring support is completed within 0.2 seconds;

[0091] When the anti-tilt bar 9 is deployed, the top fixed rod I 22 rotates synchronously, pulling the connecting plate 24 upward through the telescopic sleeve 23 (the telescopic sleeve can adapt to angle changes to ensure continuous power transmission); the connecting plate 24 drives the protective rod 25 and the L-shaped handrail 21 to move upward along the slide rail, and the horizontal section of the L-shaped handrail 21 quickly approaches the side of the patient's waist, and the protective cotton sleeve 27 on the outer wall conforms to the patient's body through elastic deformation, forming a lateral protective barrier; the vertical rod 26 slides along the outrigger II 2 to ensure the upward movement of the L-shaped handrail. Stable and prevents shaking that could startle or cause collisions to patients; the combination of magnetic repulsion unlocking and spring drive provides a fast response (total trigger time ≤ 0.5 seconds), much faster than manual protection, providing rapid support for osteoporosis patients; the anti-tilt bar's limiting design and roller configuration ensure support stability while reducing unfolding impact, preventing secondary shaking when the chair frame tipps over; the flexible contact design of the protective cotton sleeve 27 prevents hard structures from causing collision injuries to the patient's body, adapting to the fragile bones of osteoporosis patients;

[0092] When the anti-tilt bar 9 flips, the arc-shaped rod 11 slides along the arc-shaped hydraulic cylinder 14 through the end fixed connection. The rubber pad I 12 on the outer wall of the arc-shaped rod 11 simultaneously squeezes the rubber pad II 13. After the rubber pad II 13 is squeezed, it compresses the return spring 16 (stores elastic potential energy) on the one hand, and pushes the hydraulic push rod 15 to slide in the arc-shaped hydraulic cylinder 14, squeezing the hydraulic oil in the cylinder. Due to the compression of space, the hydraulic oil is forced to flow into the fixed sleeve 17 through the hydraulic pipeline 18 with an inner diameter of 0.5-0.8 mm. Due to the extremely small diameter of the hydraulic pipeline, the oil flow generates significant viscous resistance (i.e., damping force). The damping force is positively correlated with the oil flow speed (the more violent the impact, the greater the damping force). The impact energy is dissipated into the air through the conversion path of "hydraulic oil molecule friction → heat energy". The sliding speed of the arc-shaped rod 11 is continuously slowed down by the damping force, thereby reducing the impact intensity of the chair frame tipping over. When the impact energy After the energy dissipates, the return spring 16 releases its stored elastic potential energy, pushing the rubber pad II 13, rubber pad I 12, and arc-shaped rod 11 to slide in the opposite direction, thereby driving the hydraulic push rod 15 to return to its original position. The hydraulic oil flows back to the arc-shaped hydraulic cylinder 14 through the hydraulic pipeline 18, preparing for the next buffering operation. The dual buffering mechanism of hydraulic damping and elastic return increases the impact energy conversion efficiency to over 90% (refer to the principle of hydraulic buffers), preventing hard impacts from being directly transmitted to the patient's body. This can reduce the side roll impact force by 60%-80%, effectively preventing fractures in patients with osteoporosis. The design of the 0.5-0.8 mm fine-diameter hydraulic pipeline precisely controls the damping force, ensuring both the buffering effect and preventing excessive damping from hindering the deployment of the anti-roll bar, achieving a balance between buffering and support. The secondary buffering of rubber pad I 12 and rubber pad II 13 further absorbs high-frequency micro-impacts, improving buffering stability and reducing patient body vibration.

[0093] S6. After the anti-fall is completed, manually push the anti-tilt bar 9 back to the vertical position. Magnet I 29 and Magnet II 31 will re-attract each other. At the same time, the sliding push rod 30 will reset under the action of tension spring I 32, and the plug rod 35 will insert into the plug groove 33 under the action of gravity, completing the double locking. The reset spring 16 will drive the buffer assembly to reset, and the L-shaped handrail 21 will move down to the initial position as the anti-tilt bar resets. The forward tilt protection structure can be retracted by pressing the movable push rod 43.

[0094] Audible and visual alarm: When the millimeter-wave detection radar 38 triggers the anti-tilt bar to unfold, the audible and visual alarm 46 is activated simultaneously, alerting family members or caregivers to provide timely assistance through a high-decibel sound (≥80 decibels) and flashing lights, especially suitable for osteoporosis patients living alone;

[0095] Forward tilt protection: When the patient is sitting on the seat cushion 6 and preparing to stand up, manually pull out the sliding plate 40 (tension spring II 41 is stretched), pull the movable push rod 43 upward to the appropriate height (the rubber sleeve 42 fixes the height through friction), and push the cylindrical cylinder 45 to both sides to form a protective barrier in front, preventing forward tilting and falling when standing up; when not needed, the cylindrical cylinder 45 can be pushed back and the movable push rod 43 can be pressed down, and the sliding plate 40 will retract under the action of tension spring II 41, without affecting getting on and off the seat;

[0096] Structural protection: The accordion-style protective cover 34 prevents dust and debris from entering the tension spring I 32, extending the service life of the spring; the welding and bolt fixing design of the support plate 7 improves the load-bearing capacity of the seat plate 6 (suitable for patients ≤120kg).

[0097] However, as is well known to those skilled in the art, the working principles and wiring methods of the ring electromagnet 36, the millimeter-wave detection radar 38, and the audible and visual alarm 46 are all conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0098] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0099] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A cushioning shock absorption assembly characterized by, Including arc hydraulic cylinder (14), arc hydraulic cylinder (14) is sealed slidingly provided with arc rod body (11), the outer wall of arc rod body (11) is fixedly provided with rubber pad I (12) and rubber pad II (13); It further includes a buffering structure for buffering the sliding of the arc rod body (11), the buffering structure includes a hydraulic tappet (15) sealed slidingly in the arc hydraulic cylinder (14), and the hydraulic tappet (15) is fixedly provided on the outer wall of the arc rod body (11). Wherein, when the arc rod body (11) slides, the hydraulic tappet (15) extrudes the hydraulic oil in the arc hydraulic cylinder (14), generates damping force to buffer the movement of the arc rod body (11).

2. A cushioning and damping assembly according to claim 1, wherein, The buffering structure further includes a reset spring (16), and the two ends of the reset spring (16) are fixedly connected with the arc hydraulic cylinder (14) and the rubber pad II (13) through spring seats respectively, so as to drive the rubber pad II (13) to reset after the arc rod body (11) drives the rubber pad I (12) to slide and extrude the rubber pad II (13). The top of the arc hydraulic cylinder (14) is fixedly communicated with a hydraulic pipeline (18), and the top of the hydraulic pipeline (18) is fixedly communicated with a fixed sleeve (17).

3. An anti-falling chair for osteoporosis patients, comprising four sets of the cushioning and damping assembly as claimed in claim 2, characterized in that, It further includes a chair frame, the chair frame includes two supporting legs I (1) and two supporting legs II (2), a cross rod II (4) is fixed between each of the two supporting legs I (1) and the two supporting legs II (2), and a cross rod I (3) is fixed on one side of each of the two supporting legs I (1). The chair frame is provided with a seat cushion plate body (6) and a backrest plate body (5), the backrest plate body (5) is fixed between the two supporting legs I (1), and the seat cushion plate body (6) is arranged between the two supporting legs I (1) and the supporting legs II (2). Four arc hydraulic cylinders (14) are fixed on one side of the two supporting legs I (1) and the supporting legs II (2) close to the backrest plate body (5), four fixed sleeves (17) are fixed on one side of the two supporting legs I (1) and the supporting legs II (2) close to the backrest plate body (5), and four arc rod bodies (11) are slidingly provided in the corresponding supporting legs I (1) and the supporting legs II (2). It further includes four sets of supporting structures, the four sets of supporting structures are arranged on one side of the two supporting legs I (1) and the supporting legs II (2) away from the seat cushion plate body (6), and are used for supporting the chair frame when the chair frame is turned on one side, and the supporting structure includes an anti-tilt rod (9) rotatably connected to the supporting leg II (2). It further includes two sets of protection structures for protecting the patient when the anti-tilt rod (9) is unfolded, and the protection structure includes an L-shaped handrail (21), one end of the L-shaped handrail (21) is slidingly connected with the corresponding supporting leg I (1) through a sliding rail, and a vertical rod (26) is fixed to the bottom end of the L-shaped handrail (21) and slidingly provided in the supporting leg II (2). It further includes two sets of driving structures for driving the anti-tilt rod (9) to unfold, and the driving structure includes a fixed rod II (28).

4. The fall-prevention chair for osteoporotic patients according to claim 3, characterized in that, The driving structure further comprises a sliding tappet (30) slidingly arranged in the cross rod I (3), both ends of the fixed rod II (28) are fixedly connected with two adjacent anti-tilt rods (9), a magnet I (29) is embedded on one side of the fixed rod II (28) close to the cross rod I (3), a magnet II (31) is fixed on one end of the sliding tappet (30) close to the fixed rod II (28), magnetic attraction is generated between the magnet I (29) and the magnet II (31), and the anti-tilt rod (9) is kept in vertical placement; A pull spring I (32) is sleeved on the outer wall of the sliding tappet (30), one end of the pull spring I (32) is fixedly connected with the cross rod I (3), the other end is fixedly connected with the sliding tappet (30), and the fixed rod II (28) and the anti-tilt rod (9) are driven to rotate outward by the pulling force of the pull spring I (32); A plug-in groove (33) is arranged at the top of the sliding tappet (30), a plug-in rod (35) is slidingly connected in the cross rod I (3), the bottom end of the plug-in rod (35) is plug-in matched with the plug-in groove (33), and the sliding tappet (30) is limited in position; A magnet ring (37) is fixedly sleeved on the outer wall of the plug-in rod (35), a ring-shaped electromagnet (36) is fixed on the top of the cross rod I (3), repulsion is generated between the magnet ring (37) and the ring-shaped electromagnet (36), the plug-in rod (35) is driven to move upward and move out of the plug-in groove (33) after the ring-shaped electromagnet (36) is electrified, and the sliding tappet (30) is released from the brake; One end of the arc-shaped rod body (11) is fixedly connected with the anti-tilt rod (9), and the arc-shaped rod body (11) is driven to rotate when the anti-tilt rod (9) rotates.

5. The fall-prevention chair for osteoporotic patients according to claim 4, characterized in that, The supporting structure further comprises a blocking block (19) fixed at the top end of the anti-tilt rod (9), one side of the supporting leg II (2) is provided with a limiting groove (20), the blocking block (19) is slidingly matched with the limiting groove (20), and the rotation of the anti-tilt rod (9) is limited; The bottom end of the anti-tilt rod (9) is rotatably connected with a rolling wheel (10), and the friction between the anti-tilt rod (9) and the ground is reduced.

6. The fall-prevention chair for osteoporotic patients according to claim 5, characterized in that, The protection structure further comprises a fixed rod I (22), the fixed rod I (22) is located above the fixed rod II (28), and both ends are fixedly connected with two corresponding anti-tilt rods (9); The bottom of the L-shaped handrail (21) is fixedly provided with two protection rod bodies (25), the bottom ends of the two protection rod bodies (25) are slidingly arranged in the cushion plate body (6) and are fixedly provided with a connecting plate body (24), a plurality of telescopic sleeve rods (23) are slidingly arranged in the connecting plate body (24), and the plurality of telescopic sleeve rods (23) are rotatably sleeved on the outer wall of the fixed rod I (22); When the anti-tilt rod (9) rotates, the fixed rod I (22) drives the connecting plate body (24) and the L-shaped handrail (21) to move upward through the telescopic sleeve rod (23), so as to protect the patient from the side.

7. The fall-prevention chair for osteoporotic patients according to claim 6, characterized in that, One side of each of the two supporting legs I (1) and the supporting leg II (2) is provided with a supporting plate body (7), and the supporting plate body (7) is fixedly connected with the bottom of the cushion plate body (6) through bolts. The lower part of the backrest plate body (5) is provided with a waist pad (8) which is fixedly connected with the two supporting legs I (1); The bottom of the cushion plate body (6) is fixedly provided with a millimeter wave detection radar (38) which is electrically connected with the annular electromagnet (36) and is used for monitoring the center of gravity deviation angle of the patient, and the annular electromagnet (36) is started when the center of gravity deviation exceeds 15°.

8. The fall-prevention chair for osteoporotic patients according to claim 7, characterized in that, The outer walls of the two L-shaped handrails (21) are sleeved with protective cotton sleeves (27); The top end of one of the supporting legs I (1) is fixedly provided with an audible and visual alarm (46) which is electrically connected with the millimeter wave detection radar (38); The outer wall of the tension spring I (32) is sleeved with an organ type protective cover (34), and the two ends of the organ type protective cover (34) are fixedly connected with the horizontal rod I (3) and the sliding tappet (30) respectively.

9. The fall-prevention chair for osteoporotic patients according to claim 8, characterized in that, The side of the cushion plate body (6) away from the waist pad (8) is provided with a sliding guide groove (39), and the sliding guide groove (39) is slidably connected with a sliding plate body (40), and one end of the sliding plate body (40) is fixedly connected with a tension spring II (41) through a spring seat and the inner wall of the sliding guide groove (39). The sliding plate body (40) is fixedly provided with a rubber sleeve body (42) therein, the rubber sleeve body (42) is provided with a movable tappet (43) therein, the top end of the movable tappet (43) is fixedly provided with a blocking rod (44), and the outer wall of the blocking rod (44) is sleeved with two cylindrical barrels (45).

10. The method of using the anti-falling chair for osteoporosis patients, as claimed in claim 9, is characterized in that, The steps include: S1, initialization state: the anti-tilt rod (9) is placed in a vertical storage state, and the anti-tilt rod (9) is double-locked by the attraction of the magnet I (29) and the magnet II (31) and the insertion of the insertion rod (35) into the insertion slot (33); the L-shaped handrail (21) is located at a low position, and the sliding plate body (40) is withdrawn into the sliding guide groove (39); S2, real-time monitoring: the millimeter wave detection radar (38) at the bottom of the cushion plate body (6) is used for real-time monitoring of the deviation angle of the center of gravity of the patient, and when it is monitored that the center of gravity deviation angle exceeds the preset threshold, the millimeter wave detection radar (38) sends a trigger signal to the annular electromagnet (36) and the audible and visual alarm (46); S3, unlocking and unfolding: after receiving the trigger signal, the annular electromagnet (36) is electrified to generate a magnetic field, and the annular electromagnet (36) generates a repulsive force with the magnet ring (37) to drive the insertion rod (35) to separate from the insertion slot (33), thereby releasing the limitation of the sliding tappet (30); the sliding tappet (30) moves under the tension of the tension spring I (32), pushes the anti-tilt rod (9) to turn outward, and the blocking block (19) at the top end of the anti-tilt rod (9) slides to the end of the limiting groove (20) of the supporting leg II (2); S4, linkage protection: while the anti-tilt rod (9) turns outward, the anti-tilt rod (9) drives the fixed rod I (22) to rotate, the fixed rod I (22) drives the connecting plate body (24) and the L-shaped handrail (21) to slide upward along the supporting leg I (1) and the supporting leg II (2) to the protection position through the telescopic sleeve rod (23). S5, buffering and shock absorption: while the anti-tilt rod (9) is turned over, the arc-shaped rod body (11) is driven to slide in the arc-shaped hydraulic cylinder (14), the rubber pad I (12) on the arc-shaped rod body (11) pushes the hydraulic tappet (15) to move and extrude the hydraulic oil in the arc-shaped hydraulic cylinder (14) through the rubber pad II (13), so that the hydraulic oil flows through the hydraulic pipeline (18) to generate a fluid damping force, and the unfolding action of the anti-tilt rod (9) is buffered; S6, reset: after use, manually push the anti-tilt rod (9) to reset to the vertical state, so that the magnet I (29) and the magnet II (31) are re-attracted, the insertion rod (35) is re-inserted into the insertion slot (33); the reset spring (16) releases the elastic force to drive the arc-shaped rod body (11) and the hydraulic tappet (15) to reset, and the L-shaped handrail (21) is lowered to the initial position with the anti-tilt rod (9).

Images