Old people bedside armrest device with anti-falling early warning structure
By designing side guard mechanisms and linkage units, the problems of steel pipe bed guardrails affecting convenience and causing limb crush injuries have been solved, enabling convenient getting in and out of bed and turning over warnings, thus improving the safety and comfort of bedside handrail devices for the elderly.
Patent Information
- Application Number
- CN202511645662.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-11
- Publication Date
- 2025-12-16
AI Technical Summary
The height of the guardrails on existing steel pipe beds affects the protective effect and the ease of getting on and off the bed, and users are prone to limb injuries from being squeezed when turning over.
Design a bedside handrail device for the elderly with a fall prevention warning structure. Through the combined use of side anti-fall mechanism, trigger component and linkage unit, the side panel can be quickly disassembled and installed and turn over reminder can be realized to avoid limb crush injury. The magnetic attraction can also increase the width of the bed frame to prevent falls.
It facilitates a convenient process of getting on and off the bed, avoids limb injuries caused by direct contact between the user and the side panel, and prevents falls through warnings and whistles, thus improving user safety and comfort.
Smart Images

Figure CN121129062A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of steel pipe bed, in particular to an old people bedside handrail device with anti-falling early warning structure. BACKGROUND
[0002] Single steel pipe bed has small width and generally does not have a protection structure on both sides, which causes the user to easily fall from one side of the bed when turning over in bed. The utility model discloses a steel pipe bed with a protection structure in the announcement No. CN222942037U, which comprises a bed body, and protection mechanisms are arranged on both sides of the bed body. The user can be prevented from falling to one side after turning over in bed on the bed body, so that the steel pipe bed has the function of preventing side turning and falling, and the protection performance of the steel pipe bed for the user during use is improved.
[0003] Although the device has the above advantages, it still has the following defects in actual use: (1) The device fixes the guardrail on the bedside. On the one hand, if the guardrail is low, the protection effect is small, and on the other hand, if the guardrail is high, it is not convenient for the user to get on and off the bed. (2) The guardrail of the device does not actually increase the width of the bed body. When the user is at the edge of turning over, the user is easily pressed by the guardrail, thereby easily causing the problem of pressure injury. SUMMARY
[0004] In view of the deficiencies of the prior art, the present application provides an old people bedside handrail device with anti-falling early warning structure, which solves the problem that the existing steel pipe bed with protection structure is protected by fixing the guardrail on the bedside. On the one hand, the height of the guardrail affects the protection effect and the convenience of getting on and off the bed, and on the other hand, when the user turns over and contacts the guardrail, the user's limbs are easily injured.
[0005] To achieve the above purpose, the present application realizes the following technical scheme: an old people bedside handrail device with anti-falling early warning structure, comprising a bed frame, a side protection mechanism is arranged outside the bed frame, the side protection mechanism comprises a fixed pipe, both ends of the fixed pipe are fixedly connected with the body of the bed frame, two sliding rods are movably connected inside the fixed pipe, one end of each of the two sliding rods is fixedly connected with a clamping wheel, the outer surface of each of the two clamping wheels is movably connected with the inside of the fixed pipe, a side plate is arranged outside the bed frame, a clamping groove is formed in the bottom of the side plate, the inside of the clamping groove is clamped with the outer surface of the clamping wheel, a groove is formed in the outer arc surface of the clamping wheel, a through connecting groove is formed in the body of the clamping wheel, a bolt is movably connected inside the connecting groove, and one end of the bolt is threadedly connected with the body of the side plate.
[0006] Preferably, at least two side panels are provided on each side of the bed frame. A liner is fixedly connected to the outer surface of the fixed tube. The outer surface of the liner is fixedly connected to the outer surface of the bed frame. The body of the fixed tube has a through-hole limiting groove. A slide plate is fixedly connected to the outer surface of the slide rod. The outer surface of the slide plate is movably connected to the inside of the limiting groove.
[0007] Preferably, a triggering component is provided on the outside of the slide rod. The triggering component includes an electromagnet, a fixed rod is fixedly connected to the outer surface of the electromagnet, one end of the fixed rod is fixedly connected to the outer surface of the fixed tube, and a magnetic ring is movably connected to the electromagnet by magnetic force. The magnetic ring is fixed on the outer surface of the slide rod, and the outer surface of the magnetic ring is slidably connected to the inside of the fixed tube.
[0008] Preferably, a slider is provided on the outside of the fixed rod, a groove is formed on the outer surface of the slider, a slider is slidably connected inside the groove, the outer surface of the slider is fixedly connected to the other end of the fixed rod, and the bottom of the slider is movably connected to the outer surface of the slide plate.
[0009] Preferably, the output end of the slider is electrically connected to the input end of the electromagnet.
[0010] Preferably, a flexible plate is movably connected to the outer surface of the slide bar, the outer surface of the flexible plate is fixedly connected to the outer surface of the liner, and a spring plate is movably connected below the flexible plate, the outer surface of the spring plate is fixedly connected to the outer surface of the liner.
[0011] Preferably, the electromagnet is provided with a linkage unit on its exterior, the linkage unit including a whistle, the air inlet of the whistle being in through-connection with the interior of the solid tube.
[0012] Preferably, the whistle is fitted with a filter cover, and the filter cover is threaded with a screw ring, one end of which is fixedly connected to the outer surface of the tube.
[0013] Preferably, a piston and a fixed ring are respectively provided on both sides of the whistle. The piston is fixed on the slide rod and slidably connected to the inside of the fixed tube. The fixed ring is slidably sleeved on the slide rod and fixedly connected to the inside of the fixed tube. A sealing ring is embedded in the inner arc surface of the fixed ring and is slidably sleeved on the slide rod.
[0014] Preferably, a spring is fixedly connected to the outer surface of the fixed ring, the spring is sleeved on the slide rod, and one end of the spring is fixedly connected to the outer surface of the magnetic ring.
[0015] Beneficial effects This invention provides a bedside handrail device for the elderly with a fall prevention warning structure. Compared with the prior art, it has the following advantages: (1) By setting a side guard mechanism, by opening a groove under the side panel, and by engaging the groove and the clamping wheel, the side panel can be quickly disassembled and assembled. At the same time, the sliding rod is used to slide the side panel to the outside of the bed frame, thereby increasing the actual usable width of the bed frame. This makes it easier for the user to turn over and avoids the user from directly contacting the side panel and causing limb injury. In addition, by setting the side panel to be multi-segmented, the distance between two adjacent side panels on the same side can be increased, making it easier for the user to get on and off the bed.
[0016] (2) By setting a trigger component, when the user rolls over to the edge of the bed frame, the pressure plate is pressed down to make one side bend downwards. This can remind the user through the indentation, and the pressure plate also presses down the slide bar. The change in the position of the slider inside the slide groove causes the electromagnet to be energized and magnetized. Then, through the magnetic attraction with the magnetic ring, the magnetic ring can push the side plate through the slide rod to increase the width of the bed frame and the protection range of the side plate, thereby preventing the user from falling off the bed.
[0017] (3) By setting up a linkage unit, when the magnetic ring drives the slide rod to move, it will push the air inside the solid tube to flow. By setting up a whistle, the air is discharged through the whistle, thus reminding the outside world with the whistle sound. At the same time, by setting pistons and solid rings on both sides of one end of the whistle, sliding seal can be achieved. Furthermore, by setting up a sealing ring, the sealing effect of the solid ring is further improved, so that the magnetic ring slides to compress the air, thereby improving the sound of the whistle and the reminder effect. Attached Figure Description
[0018] Figure 1 This is a perspective view of the external structure of the present invention; Figure 2 This is a perspective view of the internal structure of the tube of the present invention; Figure 3 This is a perspective view of the external structure of the clamping wheel of the present invention; Figure 4 This is a perspective view of the internal structure of the slider of the present invention; Figure 5 This is a perspective view of the external structure of the whistle of the present invention.
[0019] In the diagram: 1. Bed frame; 2. Fixed tube; 3. Slide rod; 4. Trigger assembly; 41. Electromagnet; 42. Linkage unit; 421. Whistle; 422. Filter cover; 423. Threaded ring; 424. Piston; 425. Fixed ring; 426. Sealing ring; 427. Spring; 43. Fixed rod; 44. Magnetic ring; 45. Slide bar; 46. Slide groove; 47. Slider; 48. Flexible plate; 49. Spring plate; 5. Clamping wheel; 6. Side plate; 7. Clamping groove; 8. Groove; 9. Connecting groove; 10. Bolt; 11. Liner plate; 12. Limiting groove; 13. Slide plate. Detailed Implementation
[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0021] Please see Figures 1-5 This invention provides a technical solution: a bedside handrail device for the elderly with a fall prevention warning structure. The bed frame 1 includes a side bracing mechanism on its exterior. This mechanism includes multiple fixed tubes 2, spaced evenly apart, with a length equal to the width of the bed frame 1, providing overall support. Both ends of the fixed tubes 2 are fixedly connected to the body of the bed frame 1. Two sliding rods 3 are movably connected inside the fixed tubes 2. The outer diameter of the sliding rods 3 is smaller than the inner diameter of the fixed tube 2, and the sum of the lengths of the two sliding rods 3 is less than or equal to the length of the fixed tube 2. A clamping wheel 5 is fixedly connected to one end of each sliding rod 3. The outer diameter of the clamping wheel 5 matches the inner diameter of the fixed tube 2, allowing it to be stored inside the fixed tube 2 when not in use. The outer surfaces of the two clamping wheels 5 are movably connected to the interior of the fixed tube 2. The bed frame 1 also has side panels 6 on its exterior. The side panels 6 can be made of... The existing bedside handrail and guardrail support, the bottom of the side plate 6 is provided with a clamping groove 7, the inner diameter of the clamping groove 7 is adapted to the outer diameter of the hub of the clamping wheel 5, and the side plate 6 is placed on top of the clamping wheel 5 through the clamping groove 7, thereby reducing the difficulty of loading and unloading the side plate 6. The inside of the clamping groove 7 is engaged with the outer surface of the clamping wheel 5. The outer arc surface of the clamping wheel 5 is provided with a groove 8, which makes it easy to hold the clamping wheel 5, so as to facilitate the loading and unloading of the clamping wheel 5 inside the fixed tube 2, and to facilitate the rotation of the clamping wheel 5. The body of the clamping wheel 5 is provided with a through connecting groove 9, and a bolt 10 is movably connected inside the connecting groove 9. The bolt 10 can fix the clamping wheel 5 and the side plate 6 together to improve the longitudinal stability of the side plate 6. One end of the bolt 10 is threadedly connected to the body of the side plate 6.
[0022] At least two side panels 6 are provided on each side of the bed frame 1. The side panels 6 are multi-segmented, and each segment of the side panel 6 is connected to at least two clamping wheels 5. By increasing the distance between two adjacent side panels 6 on the same side, it is easier for users to get on and off the bed. It also facilitates the stacking and storage of the side panels 6 after disassembly, thereby reducing the space occupied during storage and reducing the weight of a single side panel 6, thus saving labor during loading and unloading and further reducing the difficulty of loading and unloading. The outer surface of the fixed tube 2 is fixedly connected with a liner plate 11. Multiple liners 11 are set at equal angles and are perpendicular to the fixed tube 2. At the same time, two... The distance between the side edge liner 11 and the bed frame 1 is set according to actual needs. The outer surface of the liner 11 is fixedly connected to the outer surface of the bed frame 1. The body of the fixed tube 2 is provided with a through limiting groove 12. The two ends of the limiting groove 12 are set perpendicular to each other. One end of the fixed tube 2 is opened on its outer arc surface along the axial direction of the fixed tube 2 so that the slide rod 3 can drive the side plate 6 to slide outward. The other end is opened on its outer arc surface along the radial direction of the fixed tube 2 so as to axially limit the slide rod 3. The outer surface of the slide rod 3 is fixedly connected to the slide plate 13. The outer surface of the slide plate 13 is movably connected to the inside of the limiting groove 12.
[0023] By setting up a side guard mechanism, a clamping groove 7 is opened under the side panel 6, and the clamping groove 7 and the clamping wheel 5 are engaged to facilitate the quick assembly and disassembly of the side panel 6. At the same time, the sliding rod 3 is used to slide the side panel 6 to the outside of the bed frame 1, thereby increasing the actual usable width of the bed frame 1. This makes it easier for the user to turn over and avoids the user from directly contacting the side panel 6 and causing limb injury. In addition, by setting the side panel 6 to be multi-segmented, the distance between two adjacent side panels 6 on the same side is increased, which makes it easier for the user to get on and off the bed.
[0024] A triggering component 4 is provided on the outside of the slide rod 3. The triggering component 4 includes an electromagnet 41. A fixed rod 43 is fixedly connected to the outer surface of the electromagnet 41. The fixed rod 43 is L-shaped and made of insulating material. One end of the fixed rod 43 is fixedly connected to the outer surface of the fixed tube 2. The electromagnet 41 is magnetically connected to a magnetic ring 44. When the electromagnet 41 is energized, it generates magnetism and, through magnetic attraction with the magnetic ring 44, causes the magnetic ring 44 to move through the slide rod 3 and drive the side plate 6 to move. The magnetic ring 44 is fixed on the outer surface of the slide rod 3, and the outer surface of the magnetic ring 44 is slidably connected to the inside of the fixed tube 2.
[0025] The fixed rod 43 is provided with a slider 45 on its outside. The slider 45 is made of insulating material. The outer surface of the slider 45 is provided with a groove 46. The groove 46 is provided with a conductive element (not shown in the figure) that is electrically connected to the external control circuit. The slider 47 is slidably connected inside the groove 46. The slider 47 is made of conductive material and slides in contact with the conductive element to form a sliding resistance effect. As the slider 45 slides downward, the resistance of the circuit between the slider 47 and the conductive element decreases. At the same time, the cross-section of the slider 47 is T-shaped to improve the stability of the connection with the slider 45. The outer surface of the slider 47 is fixedly connected to the other end of the fixed rod 43, and the bottom of the slider 45 is movably connected to the outer surface of the slide plate 13.
[0026] The output end of slider 47 is electrically connected to the input end of electromagnet 41.
[0027] A flexible plate 48 is movably connected to the outer surface of the slider 45. The flexible plate 48 is made of a lightweight and tough material. As a preferred embodiment, a pressure-sensitive material (not shown in the figure) can be installed above the flexible plate 48. The pressure-sensitive material is connected to the external control circuit and the terminal. That is, the resistance of the pressure-sensitive material changes when it is pressed, and the change in the circuit current value generates an early warning signal to warn the medical station terminal and mobile phone software. The outer surface of the flexible plate 48 is fixedly connected to the outer surface of the liner 11. A spring plate 49 is movably connected to the bottom of the flexible plate 48. The spring plate 49 is made of an automotive leaf spring structure. It supports the flexible plate 48 with elasticity and allows the flexible plate 48 to reshape itself. The outer surface of the spring plate 49 is fixedly connected to the outer surface of the liner 11.
[0028] By setting the trigger component 4, when the user rolls over to the edge of the bed frame 1, the flexible plate 48 is pressed down, causing one side to bend downwards. This not only alerts the user through the indentation, but also causes the sliding strip 45 to be pressed down by the flexible plate 48. The position of the slider 47 inside the slide groove 46 changes, causing the electromagnet 41 to be energized and magnetized. Through the magnetic attraction with the magnetic ring 44, the magnetic ring 44 can push the side plate 6 to move via the slide rod 3, thereby increasing the width of the bed frame 1 and increasing the protection range of the side plate 6, thus preventing the user from falling off the bed.
[0029] An external linkage unit 42 is provided on the electromagnet 41. The linkage unit 42 includes a whistle 421. The whistle 421 can remind the user or caregiver to turn over by whistling. The air inlet of the whistle 421 is connected to the inside of the solid tube 2.
[0030] The whistle 421 is covered with a filter cover 422, which can protect the whistle 421 from dust and impurities clogging or corroding the whistle 421. The filter cover 422 is internally threaded with a screw ring 423, one end of which is fixedly connected to the outer surface of the tube 2.
[0031] Pistons 424 and fixed rings 425 are respectively provided on both sides of the whistle 421. Pistons 424 and fixed rings 425 can improve the stability of sliding of slide rod 3 and improve the sealing between them, so that slide rod 3 can compress the air inside the solid tube 2. Piston 424 is fixed on slide rod 3 and slidably connected to the inside of solid tube 2. Fixed ring 425 is slidably sleeved on slide rod 3 and fixedly connected to the inside of solid tube 2. A sealing ring 426 is embedded in the inner arc surface of fixed ring 425. The sealing ring 426 can further improve the sliding sealing effect between slide rod 3 and fixed ring 425. The sealing ring 426 is slidably sleeved on slide rod 3.
[0032] A spring 427 is fixedly connected to the outer surface of the fixed ring 425. The spring 427 can maintain the stability of the slide rod 3 through its own elasticity, and at the same time, it can reset the side plate 6 through its rebound. The spring 427 is sleeved on the slide rod 3, and one end of the spring 427 is fixedly connected to the outer surface of the magnetic ring 44.
[0033] By setting up the linkage unit 42, when the magnetic ring 44 drives the slide bar 3 to move, it will push the air inside the solid tube 2 to flow. By setting up the whistle 421, this part of the air is discharged through the whistle 421, thereby alerting the outside world with a whistle sound. At the same time, by setting the piston 424 and the solid ring 425 on both sides of one end of the whistle 421, a sliding seal can be achieved. Furthermore, by setting up the sealing ring 426, the sealing effect of the solid ring 425 is further improved, so that the magnetic ring 44 slides to compress the air, thereby improving the sound of the whistle and the alerting effect.
[0034] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.
[0035] Working principle: When it is necessary to protect the edge of the bed frame 1, first hold the clamping wheel 5 through the groove 8, then rotate the slide rod 3 through the clamping wheel 5, so that the slide plate 13 on the slide rod 3 moves from one side to the other side inside the limiting groove 12. Then pull the clamping wheel 5 out of the fixed tube 2, so that the slide plate 13 disengages from the sliding bar 45. Next, hold the side plate 6 and place it above the clamping wheel 5. Then move the side plate 6 down and install it on the clamping wheel 5 through the clamping groove 7 and the clamping wheel 5. Then place the bolt 10 in the connecting groove 9 and rotate the bolt 10 to make it threadedly connected to the side plate 6, thereby fixing the clamping wheel 5 and the side plate 6 together. Then repeat the above steps to install multiple side plates 6 on both sides of the bed frame 1 in sequence. Users can get on and off the bed through the gap between two adjacent side panels 6. When a user rolls over on the bed frame 1 and the rolling area is above the flexible plate 48, the user's own weight presses down on the flexible plate 48 and bends one side downward. On the one hand, the pressure-sensitive material on the flexible plate 48 can form a warning signal to remind the user. On the other hand, the flexible plate 48 simultaneously presses down on the spring plate 49 and the slider 45. The slider 45 descends and changes the relative position of the slider 47, the slide groove 46, and the conductive element. The connection between the slider 45 and the conductive element causes the electromagnet 41 to be energized and magnetized. The greater the degree of bending of the flexible plate 48, the smaller the resistance of the slider 47 and the conductive element circuit, and the greater the magnetic force of the electromagnet 41. This makes the kinetic energy of the magnetic ring 44 greater when the electromagnet 41 magnetically attracts the magnetic ring 44. This increases the compression rate and degree of compression of the air inside the solid tube 2 by the piston 424, which in turn increases the air pressure inside the solid tube 2. The louder the whistle is when the compressed air is discharged through the whistle 421, and the whistle is used to remind the user to roll over. When the magnetic ring 44 moves, it compresses the spring 427, causing the slide bar 3 to move accordingly. This also causes the sliding plate 13 to move within the limiting groove 12, and causes the clamping wheel 5 to move the side plate 6 synchronously outward from the bed frame 1. On the one hand, the sliding of the slide bar 3 increases the overall range of the bed frame 1, preventing the user from falling, and on the other hand, it prevents the side plate 6 from directly contacting the user's limbs, thus avoiding injury. Then, when the user adjusts their body posture, the spring 427 rebounds, causing the clamping wheel 5 to move the side plate 6 back to its original position on both sides of the bed frame 1. At the same time, the spring plate 49 returns to its original position and pushes the side of the flexible plate 48 back to its original shape. By repeating the above steps, the user can be continuously protected during sleep and reminded to turn over.
[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A bedside handrail device for the elderly with a fall prevention warning structure, comprising a bed frame (1), characterized in that: The bed frame (1) is provided with a side guard mechanism. The side guard mechanism includes a fixed tube (2). Both ends of the fixed tube (2) are fixedly connected to the body of the bed frame (1). The fixed tube (2) is movably connected with two slide rods (3). One end of each slide rod (3) is fixedly connected with a clamping wheel (5). The outer surfaces of the two clamping wheels (5) are movably connected to the inside of the fixed tube (2). The bed frame (1) is provided with a side plate (6). The bottom of the side plate (6) is provided with a clamping groove (7). The inside of the clamping groove (7) is engaged with the outer surface of the clamping wheel (5). The outer arc surface of the clamping wheel (5) is provided with a groove (8). The body of the clamping wheel (5) is provided with a through connecting groove (9). The inside of the connecting groove (9) is movably connected with a bolt (10). One end of the bolt (10) is threadedly connected to the body of the side plate (6).
2. The bedside handrail device for the elderly with a fall prevention warning structure according to claim 1, characterized in that: At least two side plates (6) are provided on each side of the bed frame (1) outside the bed frame (1). A liner (11) is fixedly connected to the outer surface of the fixed tube (2). The outer surface of the liner (11) is fixedly connected to the outer surface of the bed frame (1). The body of the fixed tube (2) is provided with a through limiting groove (12). A slide plate (13) is fixedly connected to the outer surface of the slide rod (3). The outer surface of the slide plate (13) is movably connected to the inside of the limiting groove (12).
3. A bedside handrail device for the elderly with a fall prevention warning structure according to claim 1, characterized in that: The slide bar (3) is provided with a trigger assembly (4) on its outside. The trigger assembly (4) includes an electromagnet (41). A fixed rod (43) is fixedly connected to the outer surface of the electromagnet (41). One end of the fixed rod (43) is fixedly connected to the outer surface of the fixed tube (2). The electromagnet (41) is movably connected to a magnetic ring (44) by magnetic force. The magnetic ring (44) is fixed on the outer surface of the slide bar (3). The outer surface of the magnetic ring (44) is slidably connected to the inside of the fixed tube (2).
4. A bedside handrail device for the elderly with a fall prevention warning structure according to claim 3, characterized in that: The fixed rod (43) is provided with a slide bar (45) on the outside. The slide bar (45) has a groove (46) on its outer surface. A slider (47) is slidably connected inside the groove (46). The outer surface of the slider (47) is fixedly connected to the other end of the fixed rod (43). The bottom of the slide bar (45) is movably connected to the outer surface of the slide plate (13).
5. A bedside handrail device for the elderly with a fall prevention warning structure according to claim 4, characterized in that: The output end of the slider (47) is electrically connected to the input end of the electromagnet (41).
6. A bedside handrail device for the elderly with a fall prevention warning structure according to claim 4, characterized in that: The outer surface of the slide bar (45) is movably connected to a flexible plate (48), the outer surface of the flexible plate (48) is fixedly connected to the outer surface of the liner (11), and a spring plate (49) is movably connected below the flexible plate (48), the outer surface of the spring plate (49) is fixedly connected to the outer surface of the liner (11).
7. A bedside handrail device for the elderly with a fall prevention warning structure according to claim 3, characterized in that: The electromagnet (41) is provided with a linkage unit (42) on its exterior. The linkage unit (42) includes a whistle (421), and the air inlet of the whistle (421) is connected to the interior of the solid tube (2).
8. A bedside handrail device for the elderly with a fall prevention warning structure according to claim 7, characterized in that: The whistle (421) is fitted with a filter cover (422), and the filter cover (422) is threaded with a screw ring (423) inside. One end of the screw ring (423) is fixedly connected to the outer surface of the tube (2).
9. A bedside handrail device for the elderly with a fall prevention warning structure according to claim 7, characterized in that: A piston (424) and a fixed ring (425) are respectively provided on both sides of the outside of the whistle (421). The piston (424) is fixed on the slide rod (3) and slidably connected to the inside of the fixed tube (2). The fixed ring (425) is slidably sleeved on the slide rod (3) and fixedly connected to the inside of the fixed tube (2). A sealing ring (426) is embedded in the inner arc surface of the fixed ring (425). The sealing ring (426) is slidably sleeved on the slide rod (3).
10. A bedside handrail device for the elderly with a fall prevention warning structure according to claim 9, characterized in that: A spring (427) is fixedly connected to the outer surface of the fixed ring (425). The spring (427) is sleeved on the slide rod (3). One end of the spring (427) is fixedly connected to the outer surface of the magnetic ring (44).
Citation Information
Patent Citations
Steel pipe bed with protective structure
CN222942037U