Intelligent wearable device for the elderly

Abstract

The present application relates to the technical field of wearable equipment, in particular to a wearable device for smart pension, which comprises a bandage, an air guide pipe, a knee fixer and a protective air cushion, the air guide pipe is installed on one side of the bandage, the knee fixer is installed below the bandage, the protective air cushion is installed on the outer surface of the knee fixer, and the wearable device further comprises an inflation mechanism and a rotating mechanism, the inflation mechanism is installed on one side of the bandage, and the rotating mechanism is installed on the side of the knee fixer, the swing rod in the inflation mechanism drives the sliding block to swing within a certain angle range, so that the adjusting knob continuously transports the gas to the check assembly, the control block and the return spring cooperate to enable the gas to flow in one direction, the damping block and the rotating ring in the rotating mechanism are extruded to form damping, and the wear between knee joints is reduced, so that the wear of joints around the knee during walking of the old people is greatly reduced, and the health of the old people is protected.

Description

Technical Field

[0001] This invention relates to the field of wearable device technology, and more specifically to a smart elderly care wearable device. Background Technology

[0002] Smart wearable devices for the elderly refer to products that combine smart technology to help improve the quality of life, health, and safety of seniors. These devices are diverse, including smartwatches, health monitors, location trackers, and walking aids. These devices can help seniors maintain greater independence and safety, but it's best to consider individual health conditions and needs before use. Using these devices also requires adaptation and habituation; it's recommended to provide sufficient guidance and training before starting. Knee health problems are consistently serious for seniors; choosing suitable knee braces can help reduce knee pressure and protect joints. When choosing a walking aid, comfort and support are paramount. Look for models that provide good support without restricting knee movement. Some walking aids are designed with elastic materials, providing slight compression support, which helps reduce pain and promote blood circulation.

[0003] Existing wearable walking aids for the elderly often use external batteries. Considering that the devices should not be too heavy for the elderly, as this would directly increase their walking burden, lighter batteries are more expensive and have shorter battery life. This presents a dilemma for the elderly when facing long journeys; once the battery is depleted, the existing wearable walking aids can actually hinder their ability to walk. While some existing wearable walking aids use motors to assist by sensing leg movements, thus reducing the effort required for walking and making it easier, these devices are extremely expensive. Furthermore, the forced movement through the motor can cause discomfort for first-time users. During daily walking, especially climbing stairs, the constant application of significant force to the knees can increase wear and tear on elderly individuals with knee conditions such as osteoarthritis, synovitis, and rheumatoid arthritis, leading to further deterioration of their conditions.

[0004] In view of the above, in order to overcome the above technical problems, the present invention designs a smart elderly care wearable device, which solves the above technical problems. Summary of the Invention

[0005] The technical objective of this invention is to set up a smart elderly care wearable device that utilizes the knee flexion angle of the elderly when walking to inflate a protective air cushion to protect the elderly's knees, reduce wear and tear between the knee joints, thereby greatly reducing joint wear around the knees during the elderly's walking process and protecting the elderly's health.

[0006] To achieve the above-mentioned technical objectives, the present invention provides the following technical solution:

[0007] This invention provides a wearable device for smart elderly care, comprising a strap, an air tube, a knee stabilizer, and a protective air cushion. An air tube is installed on one side of the strap. The strap can be configured as an elastic band or Velcro. Two straps, one upper and one lower, are used to stabilize the thigh and calf respectively. The upper strap has a slightly larger radius than the lower strap. The knee stabilizer is installed below the strap. The knee stabilizer can be made of a relatively loose woven fabric and soft plastic that conforms to the knee. The woven fabric is warm and gentle on the knees of the elderly, suitable for use in autumn and winter. However, it may be less suitable for use in summer when there is excessive sweating. Fabric is prone to sweat stains and odors, which is where the advantages of soft plastic become apparent, as it offers better protection. The protective air cushion is installed on the outer surface of the knee fixation device and includes an inflation mechanism and a rotation mechanism. The inflation mechanism is installed on one side of the strap, and the rotation mechanism is installed on the side of the knee fixation device. The swing rod inside the inflation mechanism drives the sliding block to swing within a certain angle range, causing the adjusting lever to continuously transport gas to the check valve assembly. The control block and the return spring work together to ensure unidirectional gas flow. The damping block and the rotating ring in the rotation mechanism press against each other to form damping.

[0008] The inflation mechanism includes an inflation block, a check valve assembly, a swing assembly, and vents. The inflation block is installed on one side of the strap and has a semi-circular cross-section. The semi-circular shape facilitates even force distribution on both sides and improves stability during movement when worn by elderly people. The internal structure is hollow and serves as a gas chamber. The check valve assembly is installed on one side of the inflation block, and the swing assembly is installed on one side of the inflation block. The vents are arranged in a linear array on the other side of the inflation block, ensuring rapid gas flow. The check valve assembly and vents are mirror-symmetrical with respect to the swing assembly, thus ensuring unidirectional gas flow.

[0009] The check valve assembly includes a sealing ring, a mounting block, a return spring, a control block, an overflow hole, a sleeve, a rubber ring, and a pressure chamber. The sealing ring is installed inside the air duct, which helps improve the sealing between the sleeve and the air duct. The mounting block is installed below the sealing ring, and its cross-sectional shape is "convex." The "convex" shape of the mounting block facilitates the engagement of the return spring and maximizes the area of ​​the air outlet in the middle of the mounting block. The sealing ring and the mounting block are coaxially arranged with different diameters, which helps ensure that the gas quickly enters the air duct after passing through the connected channel. The return spring is sleeved on the outer surface of the mounting block, and the other end of the control block is engaged with the other end of the return spring. The control block has an overflow hole arranged in a ring array on its side, which reduces the risk of blockage and helps the gas to be quickly depressurized and discharged. The sleeve is installed on the outside of the control block, the rubber ring is installed on the outer side of the control block, and the pressure chamber is located inside the sleeve. The cross-sectional shape of the air pressure chamber is conical. The conical shape of the air pressure chamber can make full use of the gas pressure to make the check valve component more sensitive. The cone angle of the air pressure chamber is set towards the mounting block to ensure that the gas in the air pressure chamber forms a high pressure to help control the displacement of the block.

[0010] The swing assembly includes a swing rod, a swing ball, a limiting block, a sliding block, and an adjusting paddle. The swing rod is mounted above the rotating mechanism, the swing ball is mounted at one end of the swing rod, and the limiting block is mounted on the other side of the swing ball. The limiting block is symmetrically arranged with respect to the central axis of the swing rod. The limiting block, symmetrically arranged with respect to the central axis of the swing rod, helps to seal the inflatable block while controlling the swing range and direction of the swing ball. The sliding block is mounted in the middle of the limiting block, and the adjusting paddle is mounted on the outside of the sliding block. The adjusting paddle has a V-shaped cross-section and is made of rubber and polymer materials. The V-shaped adjusting paddle can increase its angle when swinging towards the check valve assembly, thereby forming a sealed space with the inflatable block and quickly pushing the gas into the air guide tube. When swinging to the opposite side, the adjusting paddle with a smaller angle forms a gap with the inner surface of the inflatable block, allowing the gas to pass through quickly. The sliding block has a fan-shaped cross-section, which allows it to swing rapidly within the inflatable block. The angle of the sliding block is acute, which helps to better utilize the angle of human movement, resulting in better inflation each time. The outer edge of the sliding block is arc-shaped, which helps to reduce wear between the sliding block and the inflatable block.

[0011] The rotating mechanism includes a connecting rod, a stabilizing component, an air supply pipe, a sliding groove, and a rotating component. The connecting rod is installed on one side of the protective air cushion, the stabilizing component is installed below the swing rod, the air supply pipe is installed on one side of the stabilizing component, and the sliding groove is provided on the side of the stabilizing component. The sliding groove is coaxially arranged around the central axis of the stabilizing component. The coaxial arrangement of the central axis helps to enhance the motion stability of the rotating mechanism. The angle of the sliding groove is an obtuse angle. Since the bending angle of the knee during walking and climbing stairs does not exceed a straight angle and is mostly within the acute angle range, setting it to an obtuse angle ensures both the continuity of movement and the convenience of wearing the device. The rotating component is installed inside the stabilizing component.

[0012] The stabilizing component includes a housing, damping blocks, an energy storage spring, and a fixed shaft. The housing is installed at the lower end of the connecting rod. The damping blocks are arranged in a ring array on the inner edge of the housing. The top of the damping blocks is rounded. The damping blocks are made of rubber and silicone. The fixed shaft is installed at the center of the housing. One end of the energy storage spring is snapped onto the outer surface of the fixed shaft.

[0013] The rotating assembly includes a rotating ring, a movable groove, and a movable rod. The rotating ring is installed inside the stabilizing assembly, and the maximum outer diameter of the rotating ring is smaller than the inner diameter of the outer shell to ensure continuous rotation and reduce the risk of jamming during rotation. The movable groove is located at the center of the rotating ring, and the movable rod is installed on one side of the rotating ring. The damping block and the rotating ring are spaced apart, generating slight damping during rotation to ensure stability and reduce user discomfort. Furthermore, the damping block and the rotating ring have a clearance fit, which helps reduce the risk of the rotating assembly jamming.

[0014] A smart detector is also installed on one side of the casing. The smart detector can collect data on the elderly person's knees and monitor them in real time. The data can be transmitted to the elderly person's mobile phone via Bluetooth, or sent to the children's mobile phones, so that the children can pay attention to the health status of their parents' knees in a timely manner.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. This invention, by setting up an inflation mechanism, utilizes the power of knee flexion when the elderly walk. The sliding block swings within the inflation block, allowing gas to enter the air duct through a check valve component, thereby inflating the protective air cushion to protect the elderly's knees and reduce wear and tear on the knee joints. This significantly reduces joint wear around the knees during walking and eliminates the need for batteries, reducing the weight of the device, lessening the physical and financial burden on the elderly, and protecting their health.

[0017] 2. This invention, by setting up a rotating mechanism, designs the rotating parts of the upper and lower inflation mechanisms, and uses damping blocks and rotating rings to rotate relative to each other to provide stability for the elderly during walking or climbing stairs. This avoids the situation where traditional couplings or bearings are prone to slippage or excessive inertia, which can cause gait instability in the elderly. In addition, the setting of an energy storage spring helps the mechanism to reset while reducing the force required by the elderly when climbing stairs, thus helping the elderly reduce physical exertion when climbing stairs.

[0018] 3. This invention, by setting up a swing component and a check component, utilizes the special shape of the adjusting lever to achieve unidirectional air transport during the swing process. When the gas passes through the check component, it squeezes the conical air pressure chamber, causing the control block to squeeze the return spring, thereby achieving unidirectional pressurized transport of the gas, ensuring that the protective air cushion is filled with gas in time, and protecting the knees of the elderly. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] The above and other aspects of the invention will now be described by way of example only, with reference to the accompanying drawings, in which:

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the inflation component structure of the present invention;

[0023] Figure 3 This is an exploded view of the check valve assembly of the present invention;

[0024] Figure 4 This is a cross-sectional view of the check valve assembly of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the swing assembly of the present invention;

[0026] Figure 6 This is a schematic diagram of the gas flow direction in the inflation mechanism of the present invention;

[0027] Figure 7 This is a schematic diagram of the rotating mechanism structure of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the stabilizing component of the present invention;

[0029] Figure 9 This is a schematic diagram of the rotating component structure of the present invention;

[0030] Figure 10 This is a cross-sectional view of the mating of the damping block and the rotating ring of the present invention;

[0031] Figure 11 This is a schematic diagram of the gas flow path of the gas guide tube of the present invention.

[0032] In the diagram: 1. Strap; 2. Inflation mechanism; 21. Inflation block; 22. Check valve assembly; 221. Sealing ring; 222. Mounting block; 223. Return spring; 224. Control block; 225. Overflow hole; 226. Sleeve; 227. Rubber ring; 228. Air pressure chamber; 23. Swing assembly; 231. Swing rod; 232. Swing ball; 233. Limiting block; 234. Sliding block; 235. Adjusting lever; 24. Vent hole; 3. Air guide tube; 4. Knee fixation device; 5. Rotation mechanism; 51. Connecting rod; 52. Stabilizing assembly; 521. Outer shell; 522. Damping block; 523. Energy storage spring; 524. Fixed shaft; 53. Air supply pipe; 54. Sliding groove; 55. Rotation assembly; 551. Rotating ring; 552. Movable groove; 553. Movable rod; 6. Protective air cushion. Detailed Implementation

[0033] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0034] like Figures 1 to 11 As shown, this invention provides a wearable device for smart elderly care, including a strap 1, an air tube 3, a knee fixator 4, and a protective air cushion 6. The air tube 3 is installed on one side of the strap 1. The strap 1 is made of Velcro, with two straps 1, one above the other, securing the upper and lower legs respectively. The radius of the upper strap 1 is slightly larger than that of the lower strap 1. The knee fixator 4 is installed below the strap 1. The knee fixator 4 is made of a relatively loose woven fabric, which is warm and gentle on the knees of the elderly, making it suitable for use in autumn and winter. The protective air cushion 6 is installed on the outer surface of the knee fixation device 4, and also includes an inflation mechanism 2 and a rotation mechanism 5. The inflation mechanism 2 is installed on one side of the strap 1, and the rotation mechanism 5 is installed on the side of the knee fixation device 4. The swing rod 231 inside the inflation mechanism 2 drives the sliding block 234 to swing within a certain angle range, so that the adjusting plate 235 continuously transports gas to the check component 22. The control block 224 and the return spring 223 cooperate to make the gas flow in one direction. The damping block 522 and the rotating ring 551 in the rotation mechanism 5 squeeze each other to form damping.

[0035] like Figure 2As shown, the inflation mechanism 2 includes an inflation block 21, a check valve assembly 22, a swing assembly 23, and a vent 24. The inflation block 21 is installed on one side of the strap 1. The inflation block 21 forms a sealing ring 221 to facilitate unidirectional gas flow, thereby ensuring that a large amount of gas is input into the protective air cushion 6 through the air guide tube 3. The cross-sectional shape of the inflation block 21 is semi-circular, which facilitates even force distribution on both sides and improves stability during movement when worn and fixed by the elderly. Its interior is hollow, serving as a gas chamber. The check valve assembly 23... 2. Installed on the side of the inflatable block 21, the check valve 22 is used to unidirectionally transmit gas into the air guide tube 3. The swinging component 23 is installed on one side of the inflatable block 21. The swinging component 23 rotates within a certain angle to achieve rapid gas suction. The vent holes 24 are linearly arrayed on the other side of the inflatable block 21. The vent holes 24 are used to draw gas into the inflatable block 21. The linear array of vent holes 24 ensures rapid gas flow. The check valve 22 and the vent holes 24 are mirror-symmetrical with respect to the swinging component 23, thereby ensuring unidirectional gas flow.

[0036] When a user walks or climbs stairs, their knees will bend intermittently, causing the swing component 23 to rotate at a certain angle on the inflatable block 21. Gas is drawn into the inflatable block 21 through the vent 24. The swing component 23 rotates again, squeezing the gas towards the check component 22. The gas enters the protective air cushion 6 through the air guide tube 3.

[0037] like Figure 3 and Figure 4As shown, the check valve assembly 22 includes a sealing ring 221, a mounting block 222, a return spring 223, a control block 224, an overflow hole 225, a sleeve 226, a rubber ring 227, and a pressure chamber 228. The sealing ring 221 is installed inside the air guide pipe 3 and helps improve the sealing between the sleeve 226 and the air guide pipe 3. The mounting block 222 is installed on the lower side of the sealing ring 221 and is used to fix the return spring 223. The cross-sectional shape of the mounting block 222 is "convex". The U-shaped mounting block 222 facilitates the engagement of the return spring 223 and maximizes the area of ​​the air outlet in the middle of the mounting block 222. The sealing ring 221 and the mounting block 222 are coaxially arranged with different diameters. This coaxial arrangement helps ensure that the gas quickly enters the air guide pipe 3 after passing through the connected channel. The return spring 223 is sleeved on the outer surface of the mounting block 222. The return spring 223 helps stabilize the control block 224 on the left side. The other end of the control block 224 is engaged with the other end of the return spring 223. The control block 224 is used to... The internal sliding of the sleeve 226 controls the flow of gas from the overflow hole 225. The control block 224 has annular array overflow holes 225 on its side. These overflow holes 225 allow gas to flow outwards when the internal pressure of the sleeve 226 is high. The annular array of overflow holes 225 reduces the risk of blockage and helps the gas to be quickly depressurized and discharged. The sleeve 226 is installed on the outside of the control block 224 and connects the air guide pipe 3 and the inflation block 21. The rubber ring 227 is installed on the control block 224. On the outer side, the rubber ring 227 is used to enhance the sealing between the sleeve 226 and the air guide tube 3. The air pressure chamber 228 is opened inside the sleeve 226. The air pressure chamber 228 is used to collect gas to form high air pressure, thereby squeezing the return spring 223. The cross-sectional shape of the air pressure chamber 228 is conical. The conical air chamber can make full use of the gas pressure to make the check assembly 22 more sensitive. The cone angle of the air pressure chamber 228 is set towards the mounting block 222 to ensure that the gas forms a high air pressure in the air pressure chamber 228 to help control the displacement of the control block 224.

[0038] After the swing assembly 23 introduces gas into the sleeve 226, the gas quickly enters the air pressure chamber 228. The high-pressure gas squeezes the return spring 223 to move forward until the overflow hole 225 separates from the narrower inner wall of the sleeve 226. At this time, the gas will enter the wider inner wall of the sleeve 226 through the overflow hole 225. After passing through the mounting block 222, the gas is quickly introduced into the air guide pipe 3. During this process, the rubber ring 227 always ensures the sealing between the sleeve 226 and the air guide pipe 3.

[0039] like Figure 5 and Figure 6As shown, the swing assembly 23 includes a swing rod 231, a swing ball 232, a limiting block 233, a sliding block 234, and an adjusting paddle 235. The swing rod 231 is mounted above the rotating mechanism 5 and is used to rotate when the elderly person's knee is bent. The swing ball 232 is mounted on one end of the swing rod 231, and the limiting block 233 is mounted on the other side of the swing ball 232. The limiting block 233 is symmetrically arranged with respect to the central axis of the swing rod 231. The limiting block 233, which is symmetrically arranged with respect to the central axis of the swing rod 231, can help seal the inflatable block 21 while controlling the swing ball. The swing range and direction of 232 are as follows: the sliding block 234 is installed in the middle of the limiting block 233, and the adjusting lever 235 is installed on the outside of the sliding block 234. The adjusting lever 235 has a V-shaped cross-section and is made of rubber and polymer materials. The V-shaped adjusting lever 235 can increase its angle when swinging towards the check component 22, thereby forming a sealed space with the inflation block 21 and quickly pushing the gas into the air guide tube 3; when swinging to the opposite side, the adjusting lever 235 with a smaller angle forms a gap with the inner surface of the inflation block 21, allowing the gas to pass through quickly. The sliding block 234 has a fan-shaped cross-section. The fan-shaped sliding block 234 can swing quickly in the inflation block 21. The angle of the sliding block 234 is an acute angle. The acute angle is conducive to better utilizing the angle of human movement, thereby improving the inflation effect each time. The outer edge of the sliding block 234 is set as an arc. The arc-shaped sliding block 234 helps to reduce wear between it and the inflation block 21.

[0040] During inflation: When the swing rod 231 is rotated under force, the sliding block 234 swings in the direction of the air pipe 3, and the gas enters the interior of the inflation block 21 from the air vent 24. The adjusting plate 235 is compressed by the gas, causing the angle to increase, which squeezes the air in the inflation block 21 into the check valve assembly 22.

[0041] During the air replenishment process: the swing rod 231 moves towards the vent 24, and the adjustment lever 235 becomes smaller due to the air pressure difference formed on both sides of the sliding block 234, causing the gas to flow from the side of the sliding block 234 closest to the vent 24 to the other side.

[0042] like Figure 7As shown, the rotating mechanism 5 includes a connecting rod 51, a stabilizing component 52, an air supply pipe 53, a sliding groove 54, and a rotating component 55. The connecting rod 51 is installed on one side of the protective air cushion 6 and is used to connect the swing rod 231 to move together with it. The stabilizing component 52 is installed below the swing rod 231 and is used to cooperate with the rotating component 55 to form damping, reducing the harm caused by inertia while storing energy for the energy storage spring, helping the elderly reduce effort when climbing stairs. The air supply pipe 53 is installed on one side of the stabilizing component 52 and is used to collect the air from the guide pipe 3. The gas inside the shell 521 is introduced into the protective air cushion 6. The sliding groove 54 is provided on the side of the stabilizing component 52. The sliding groove 54 is coaxially arranged around the central axis of the stabilizing component 52. The coaxial arrangement of the central axis is beneficial to enhance the motion stability of the rotating mechanism 5. The angle of the sliding groove 54 is an obtuse angle. Since the bending angle of the knee of the human body during walking and climbing stairs will not exceed a straight angle and is mostly within the acute angle range, setting it to an obtuse angle ensures the continuity of movement and the convenience of wearing. The rotating component 55 is installed inside the stabilizing component 52.

[0043] like Figure 8 As shown, the stabilizing component 52 includes a housing 521, damping blocks 522, an energy storage spring 523, and a fixed shaft 524. The housing 521 is installed at the lower end of the connecting rod 51. The damping blocks 522 are arranged in a ring array on the inner edge of the housing 521. The damping blocks 522 are used to cooperate with the rotating ring 551 to form damping. The top of the damping blocks 522 is rounded. The damping blocks 522 are made of rubber and silicone. The fixed shaft 524 is installed at the axis of the housing 521. One end of the energy storage spring 523 is snapped onto the outer surface of the fixed shaft 524.

[0044] like Figure 9 and Figure 10 As shown, the rotating assembly 55 includes a rotating ring 551, a movable groove 552, and a movable rod 553. The rotating ring 551 is installed inside the stabilizing assembly 52. ​​The maximum outer diameter of the rotating ring 551 is smaller than the inner diameter of the outer shell 521 to ensure continuous rotation and reduce the risk of jamming during rotation. The movable groove 552 is located at the center of the rotating ring 551, and the movable rod 553 is installed on one side of the rotating ring 551. The damping block 522 and the rotating ring 551 are spaced apart, generating slight damping during rotation to ensure stability and reduce user discomfort. The damping block 522 and the rotating ring 551 are in a clearance fit, which helps reduce the risk of jamming in the rotating assembly 55.

[0045] The connecting rod 51 and the movable rod 553 are respectively connected to the upper and lower inflatable mechanisms 2. During the elderly person's walking, both bend to the same side, causing the energy storage spring 523 to compress. The damping block 522 and the rotating ring 551 work together to avoid the harm caused by inertia and reduce the elderly person's discomfort. When the elderly person's leg needs to straighten, the energy storage spring 523 works to reduce the work required by the elderly person. The damping block 522 and the rotating ring 551 continue to work together to help the elderly person improve the stability during the movement through slight damping.

[0046] like Figure 11 As shown, the gas enters the gas guide pipe 3 with the cooperation of the rotating component 55 and the check component 22. The upper and lower gas guide pipes 3 are connected in the annular flow channel inside the outer shell 521 and converge at a point to flow outward. Then, the gas enters the protective air cushion 6 through the gas delivery pipe 53, completing the one-way transport of the gas.

[0047] In operation, the elderly person secures the device by placing the strap 1 on the thigh and calf sides and the knee fixator 4 on the knee. When walking or climbing stairs, the elderly person's knees periodically switch between bending and straightening. During this process, the rotating mechanism 5 provides damping to improve the elderly person's movement stability. The connecting rod 51 and the movable rod 553 are connected to the upper and lower inflation mechanisms 2 respectively. When they bend to the same side, they drive the energy storage spring 523 to compress. The damping block 522 and the rotating ring 551 work together to avoid the harm caused by inertia. When the elderly person's leg needs to straighten, the energy storage spring 523 works to reduce the work required by the elderly person.

[0048] The knees will bend intermittently, causing the swing assembly 23 to rotate at a certain angle on the inflatable block 21. After the swing assembly 23 introduces gas into the sleeve 226, the gas quickly enters the air pressure chamber 228. The high-pressure gas squeezes the return spring 223 to move forward until the overflow hole 225 separates from the narrower inner wall of the sleeve 226. At this time, the gas will enter the wider inner wall of the sleeve 226 through the overflow hole 225. After passing through the mounting block 222, the gas quickly enters the air guide tube 3 and is then drawn into the inflatable block 21 through the vent hole 24. The swing assembly 23 rotates again, squeezing the gas towards the check assembly 22. The gas then enters the protective air cushion through the air guide tube 3. 6. Inside; When the elderly person bends their legs, the swing rod 231 rotates under force, and the sliding block 234 swings in the direction of the air guide tube 3. Gas enters the interior of the inflatable block 21 from the vent 24. The adjusting lever 235 is compressed by the gas, causing the angle to increase, which squeezes the air in the inflatable block 21 into the check valve component 22. Thus, the gas passes through the outer shell 521 in the air guide tube 3, enters the air supply tube 53, and then enters the protective air cushion 6. When the elderly person straightens their legs, the swing rod 231 moves towards the vent 24. The adjusting lever 235 decreases in angle due to the air pressure difference on both sides of the sliding block 234, causing the gas to flow from the side of the sliding block 234 closest to the vent 24 to the other side.

[0049] When the elderly person bends their knee, the inflation mechanism 2 inflates the protective air cushion 6, filling it with gas. When the elderly person straightens their knee, the inflated protective air cushion 6 protects the knee during the straightening process. A pressure valve is located on one side of the protective air cushion 6. The pressure valve can be set to a certain pressure value to unidirectionally release the gas inside the protective air cushion 6 to reduce the air pressure. When the elderly person bends their knee, the protective air cushion 6 is in the inflation process, and its internal air pressure increases. After reaching the threshold set by the pressure valve, the pressure valve begins to release air. At the same time, the elderly person straightens their knee. That is, the elderly person straightens their knee and the pressure valve releases air at the same time. The continuously releasing air cushion 6 can reduce the pressure on the elderly person's knee and prevent the elderly person from being constricted by the high-pressure protective air cushion 6 for a long time, which would cause the blood vessels around the knee to be compressed and have a negative impact on the body.

[0050] The technical features disclosed above are not limited to combinations of the disclosed features with other features. Those skilled in the art may also make other combinations of the technical features according to the purpose of the disclosure in order to achieve the purpose of this disclosure.

Claims

1. A wearable device for smart elderly care, comprising a strap (1), an air tube (3), a knee fixation device (4), and a protective air cushion (6), wherein the air tube (3) is installed on one side of the strap (1), the knee fixation device (4) is installed below the strap (1), and the protective air cushion (6) is installed on the outer surface of the knee fixation device (4), characterized in that, It also includes an inflation mechanism (2) and a rotation mechanism (5). The inflation mechanism (2) is installed on one side of the strap (1), and the rotation mechanism (5) is installed on the side of the knee fixation device (4). The swing rod (231) inside the inflation mechanism (2) drives the sliding block (234) to swing inside the inflation block (21), so that the adjusting paddle (235) continuously transports gas to the check assembly (22). The control block (224) and the return spring (223) cooperate to make the gas flow in one direction. The gas is finally input into the protective air cushion (6) through the air guide tube (3). The damping block (522) and the rotating ring (551) in the rotation mechanism (5) squeeze each other to form damping. The inflation mechanism (2) includes an inflation block (21), a check valve assembly (22), a swing assembly (23), and a vent (24). The inflation block (21) is installed on one side of the strap (1). The cross-sectional shape of the inflation block (21) is a semi-circular ring with a hollow structure inside. The check valve assembly (22) is installed on the side of the inflation block (21). The swing assembly (23) is installed on one side of the inflation block (21). The vent (24) is linearly arrayed on the other side of the inflation block (21). The check valve assembly (22) and the vent (24) are mirror-symmetrical with respect to the swing assembly (23).

2. The wearable device for smart elderly care according to claim 1, characterized in that: The check valve assembly (22) includes a sealing ring (221), a mounting block (222), a return spring (223), a control block (224), an overflow hole (225), a sleeve (226), a rubber ring (227), and a pressure chamber (228). The sealing ring (221) is installed inside the air duct (3), and the mounting block (222) is installed on the lower side of the sealing ring (221). The cross-sectional shape of the mounting block (222) is "convex". The sealing ring (221) and the mounting block (222) The control block (224) is coaxially arranged with different diameters. The return spring (223) is sleeved on the outer surface of the mounting block (222). The other end of the control block (224) is snapped into the other end of the return spring (223). The control block (224) has overflow holes (225) arranged in annular array on its side. The sleeve (226) is installed on the outside of the control block (224). The rubber ring (227) is installed on the outer side of the control block (224). The air pressure chamber (228) is opened inside the sleeve (226).

3. The wearable device for smart elderly care according to claim 2, characterized in that: The cross-sectional shape of the air pressure chamber (228) is conical, and the cone angle of the air pressure chamber (228) is set towards the mounting block (222).

4. The wearable device for smart elderly care according to claim 1, characterized in that: The swing assembly (23) includes a swing rod (231), a swing ball (232), a limiting block (233), a sliding block (234), and an adjusting paddle (235). The swing rod (231) is installed above the rotating mechanism (5), the swing ball (232) is installed at one end of the swing rod (231), the limiting block (233) is installed on the other side of the swing ball (232), the limiting block (233) is symmetrically arranged with respect to the central axis of the swing rod (231), the sliding block (234) is installed in the middle of the limiting block (233), and the adjusting paddle (235) is installed on the outside of the sliding block (234). The cross-sectional shape of the adjusting paddle (235) is V-shaped.

5. A wearable device for smart elderly care according to claim 4, characterized in that: The sliding block (234) has a fan-shaped cross-section, an acute angle, and an arc-shaped outer edge.

6. A wearable device for smart elderly care according to claim 1, characterized in that: The rotating mechanism (5) includes a connecting rod (51), a stabilizing component (52), an air supply pipe (53), a sliding groove (54), and a rotating component (55). The connecting rod (51) is installed on one side of the protective air cushion (6), the stabilizing component (52) is installed below the swing rod (231), the air supply pipe (53) is installed on one side of the stabilizing component (52), the sliding groove (54) is provided on the side of the stabilizing component (52), the sliding groove (54) is coaxially arranged around the central axis of the stabilizing component (52), the angle of the sliding groove (54) is an obtuse angle, and the rotating component (55) is installed inside the stabilizing component (52).

7. A wearable device for smart elderly care according to claim 6, characterized in that: The stabilizing component (52) includes a housing (521), damping blocks (522), an energy storage spring (523), and a fixed shaft (524). The housing (521) is installed at the lower end of the connecting rod (51), the damping blocks (522) are arranged in a ring array on the inner edge of the housing (521), the fixed shaft (524) is installed at the axis of the housing (521), and one end of the energy storage spring (523) is snapped onto the outer surface of the fixed shaft (524).

8. A wearable device for smart elderly care according to claim 7, characterized in that: The rotating assembly (55) includes a rotating ring (551), a movable groove (552), and a movable rod (553). The rotating ring (551) is installed inside the stabilizing assembly (52). The maximum outer diameter of the rotating ring (551) is smaller than the inner diameter of the outer shell (521). The movable groove (552) is opened at the center of the rotating ring (551), and the movable rod (553) is installed on one side of the rotating ring (551).

9. A wearable device for smart elderly care according to claim 8, characterized in that: The damping block (522) and the rotating ring (551) are spaced apart, and the damping block (522) and the rotating ring (551) are in clearance fit.

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