Anti-falling nursing bed for old people

Abstract

The invention discloses an anti-falling old people nursing bed, and relates to the technical field of old people nursing beds, the anti-falling old people nursing bed comprises a main body mechanism, the main body mechanism comprises a bed body, the two side surfaces of the bed body are each fixedly provided with two movable supporting legs, the outer side of the bed body is provided with a synchronous supporting mechanism, and the synchronous supporting mechanism comprises a guardrail supporting unit; the anti-falling nursing bed comprises a bed body and guardrail supporting units, the guardrail supporting units are located on the two sides of the bed body, and the guardrail supporting units are used for forming protection on the two sides of the bed body and providing support when the old people get up to prevent the old people from falling suddenly when the old people turn over or get up to get out of the bed. Adjustable protection structures can be formed on the two sides of the bed body, when old people need to get up, the upper guardrails have the overturning function, and the upper guardrails and the lower guardrails ascend synchronously, so that effective support is provided for the old people when the old people get up, and the old people are prevented from suddenly falling off when turning over or getting up to get out of the bed.

Description

Technical Field

[0001] This application relates to the field of elderly care bed technology, specifically an anti-fall elderly care bed. Background Technology

[0002] Elderly care beds are functional beds designed specifically for elderly people with limited mobility. Through humanized functional design, they balance the needs of elderly people for independent living with the efficiency of caregivers, while reducing the health risks of pressure sores, muscle atrophy and thrombosis caused by long-term bed rest. They are core nursing equipment for home care, nursing homes and rehabilitation institutions.

[0003] Currently, fall-proof nursing beds are designed specifically to prevent elderly people from accidentally falling out of bed, providing them with a safer sleeping and resting environment. Most fall-proof nursing beds are equipped with removable guardrails on both sides.

[0004] Existing nursing beds typically use double-sided guardrails to prevent elderly people from falling. However, the presence of these guardrails can also cause elderly people to fall when getting up. Furthermore, existing nursing bed guardrails cannot provide effective support for the elderly when getting up and getting out of bed. Since the guardrails are fixed to both sides of the nursing bed, it is easy for the elderly to fall when getting up, turning around, or getting out of bed. Summary of the Invention

[0005] The purpose of this application is to provide a fall-proof elderly care bed to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A fall-prevention elderly care bed includes a main structure, which includes a bed frame. Two movable support legs are fixedly installed on both sides of the bed frame, and a synchronous support mechanism is provided on the outer side of the bed frame. The synchronous support mechanism includes guardrail support units located on both sides of the bed. The guardrail support units are used to form protection on both sides of the bed and can provide support when the elderly get up, preventing the elderly from suddenly falling when turning over or getting out of bed. The synchronous support mechanism also includes a foot pedal synchronous unit located on both sides of the bed. The foot pedal synchronous unit is used to raise and lower synchronously with the guardrail to provide foot support for the elderly, enabling them to get up and get out of bed stably and contact the ground, further reducing the possibility of falling when getting out of bed.

[0007] Preferably, the guardrail support unit includes four upper guardrails. A rotating shaft is fixedly installed on the inner wall of each upper guardrail. A bearing plate is fixedly installed on the outer surface of each rotating shaft. The outer surface of each bearing plate is in contact with the inner wall of the movable support leg. A connecting plate is fixedly installed on the bottom surface of each bearing plate. The outer surface of each connecting plate is in contact with the inner wall of the movable support leg. A first matching nut is fixedly installed on the inner wall of each connecting plate. A first lead screw is threadedly connected to the inner wall of each first matching nut. The outer surface of each first lead screw is rotatably connected to the inner wall of the movable support leg.

[0008] Preferably, a driven gear is fixedly installed on the bottom surface of each first lead screw, a driving gear is meshed on the outer surface of each driven gear, a dual-axis drive motor is fixedly installed on the side of each driving gear away from the first lead screw, each dual-axis drive motor is fixedly installed on the inner wall of the movable support leg, a lower guardrail is rotatably connected to the outer surface of each shaft, and a first bevel gear is fixedly installed at the end of each shaft near the movable support leg.

[0009] Preferably, a second bevel gear meshes with the outer surface of each first bevel gear, a double key shaft is fixedly installed on the bottom surface of each second bevel gear, a key shaft housing is snapped onto the outer surface of each double key shaft, the outer surface of each key shaft housing is rotatably connected to the inner wall of the movable support leg, a transmission wheel is fixedly installed on the outer surface of each key shaft housing and one of the output ends of the dual-axis drive motor, and a transmission belt is connected to the outer surfaces of the two transmission wheels for transmission.

[0010] Preferably, a first telescopic cover is fixedly installed on the inner wall of each of the movable support legs, and each of the first telescopic covers is fixedly installed on the bearing plate.

[0011] Preferably, each of the movable support legs has two limiting guide rails fixedly installed on the side near the upper guardrail, and the interior of each bearing plate is slidably connected to the outer surface of the limiting guide rails.

[0012] Preferably, a sliding bearing is fixedly installed on the outer surface of each of the double key shafts, and the outer surface of each sliding bearing is fixedly connected to the inner wall of the connecting plate.

[0013] Preferably, the foot pedal synchronization unit includes two foot pedals. Two lifting blocks are fixedly installed on the side of each foot pedal closest to the bed frame. A second matching nut is fixedly installed on the inner wall of each lifting block. A second lead screw is threadedly connected to the inner wall of each second matching nut. A housing is rotatably connected to the outer surface of each second lead screw. The outer surface of each lifting block contacts the inner wall of the housing. The outer surface of each housing contacts the inner wall of the bed frame. A third bevel gear is fixedly installed at the top of each second lead screw. A first single-wheel axle meshes with the outer surface of each third bevel gear. The outer surface of each first single-wheel axle is rotatably connected to the inner wall of the housing. A support shell is fixedly installed on the side of each housing furthest from the second lead screw, and each support shell is fixedly installed on the bed frame.

[0014] Preferably, each of the supporting shells has a double-shaft rotatably connected to its inner wall, a keyway shaft meshing with the outer surface of each double-shaft, and the outer surface of each keyway shaft rotatably connected to the inner wall of the supporting shell. Each keyway shaft has a single-key shaft slidably connected inside it. A synchronous gear is fixedly installed at the end of each single-key shaft and the third bevel gear away from the supporting shell. A linear slide rail is fixedly installed at the top of each shell, and the upper surface of each linear slide rail is fixedly connected to the inner bottom wall of the bed. A second single-shaft meshes with the outer surface of each double-shaft, and the outer surface of each second single-shaft is rotatably connected to the inner wall of the movable support leg. A synchronous pulley is fixedly installed on the outer surface of each second single-shaft and the outer surface of the first lead screw. A synchronous belt is connected to the outer surfaces of the two synchronous pulleys for transmission.

[0015] Preferably, a second telescopic cover is fixedly installed on the inner wall of each of the outer shells, and each second telescopic cover is fixedly installed on the lifting block.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention, by setting up a guardrail support unit, can form an adjustable protective structure on both sides of the bed. When the elderly need to get up, the upper guardrail has a flipping function and rises synchronously with the upper and lower guardrails, providing effective support for the elderly when getting up and preventing them from suddenly falling when turning over or getting out of bed.

[0017] This invention features a foot pedal synchronization unit that can be linked with the guardrail support unit. When the guardrail is raised, the foot pedal rises synchronously to a suitable height, providing a stable foot support platform for the elderly. During the process of going from lying down to standing, the elderly can always receive continuous support and protection, effectively reducing the risk of falls caused by sudden changes in the body's center of gravity. The foot pedal can be smoothly lowered to the initial position, without affecting normal walking space, and is ready for the next use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a fall-prevention elderly care bed according to the present invention; Figure 2 This is a schematic diagram of the foot pedal structure of the present invention; Figure 3 This is a schematic diagram of the structure of the lower guardrail of the present invention; Figure 4 This is a cross-sectional view of the movable support leg of the present invention; Figure 5 This is a schematic diagram of the key shaft shell of the present invention; Figure 6 This is a cross-sectional view of the support shell of the present invention; Figure 7 This is a cross-sectional view of the outer casing of the present invention; Figure 8 This is a partial structural diagram of the dual-shaft system of the present invention.

[0019] The attached figures are labeled as follows: 1. Main structure; 11. Bed frame; 12. Movable support legs; 2. Synchronous support mechanism; 21. Guardrail support unit; 2101. Upper guardrail; 2102. Lower guardrail; 2103. Dual-axis drive motor; 2104. First telescopic cover; 2105. Rotating shaft; 2106. Drive gear; 2107. Driven gear; 2108. Key shaft housing; 2109. First lead screw; 2110. First matching nut; 2111. Connecting plate; 2112. First bevel gear; 2113. Bearing plate; 2114. Limiting guide rail; 2115. Transmission wheel; 2116. Transmission belt; 2117. Double key shaft; 2118. Sliding bearing; 2119. Second bevel gear; 22. Foot pedal synchronization unit; 2201. Foot pedal; 2202. Second telescopic cover; 2203. Support shell; 2204. Double wheel axle; 2205. Second single wheel axle; 2206. Synchronous belt; 2207. Synchronous pulley; 2208. Housing; 2209. Second lead screw; 2210. Second matching nut; 2211. Lifting block; 2212. Third bevel gear; 2213. Linear slide rail; 2214. First single wheel axle; 2215. Synchronous gear; 2216. Single key shaft; 2217. Keyway wheel shaft. 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 According to one embodiment of this application, a fall-proof elderly care bed is provided, including a main body 1, the main body 1 including a bed body 11, two movable support legs 12 are fixedly installed on both sides of the bed body 11, and a synchronous support mechanism 2 is provided on the outer side of the bed body 11. Furthermore, in this embodiment, the synchronous support mechanism 2 includes a guardrail support unit 21, which is located on both sides of the bed 11. The guardrail support unit 21 is used to form protection on both sides of the bed 11 and can provide support when the elderly get up, preventing the elderly from suddenly falling when turning over or getting out of bed.

[0022] As a further definition of the synchronous support mechanism 2 of the present invention, the guardrail support unit 21 includes four upper guardrails 2101. A rotating shaft 2105 is fixedly installed on the inner wall of each upper guardrail 2101. A bearing plate 2113 is fixedly installed on the outer surface of each rotating shaft 2105. The outer surface of each bearing plate 2113 is in contact with the inner wall of the movable support leg 12. A connecting plate 2111 is fixedly installed on the bottom surface of each bearing plate 2113. The outer surface of each connecting plate 2111 is in contact with the inner wall of the movable support leg 12. The inner wall of each connecting plate 2111 is... A first matching nut 2110 is fixedly installed. Each first matching nut 2110 has a first lead screw 2109 threadedly connected to its inner wall. The outer surface of each first lead screw 2109 is rotatably connected to the inner wall of the movable support leg 12. A driven gear 2107 is fixedly installed on the bottom surface of each first lead screw 2109. A driving gear 2106 meshes with the outer surface of each driven gear 2107. A dual-axis drive motor 2103 is fixedly installed on the side of each driving gear 2106 away from the first lead screw 2109. Each dual-axis drive motor 2103 is fixedly... A lower guardrail 2102 is rotatably connected to the outer surface of each rotating shaft 2105, which is fixedly installed on the inner wall of the movable support leg 12. A first bevel gear 2112 is fixedly installed at one end of each rotating shaft 2105 near the movable support leg 12. A second bevel gear 2119 meshes with the outer surface of each first bevel gear 2112. A double key shaft 2117 is fixedly installed on the bottom surface of each second bevel gear 2119. A key shaft housing 2108 is snapped onto the outer surface of each double key shaft 2117. The outer surface of each key shaft housing 2108 is rotatably connected to the inner wall of the movable support leg 12. Each key shaft housing 2108 has a transmission wheel 2115 fixedly installed on its outer surface and one of the output ends of the dual-axis drive motor 2103. The outer surfaces of the two transmission wheels 2115 are connected to a transmission belt 2116. By setting up a guardrail support unit 21, an adjustable protective structure can be formed on both sides of the bed 11. When the elderly need to get up, the upper guardrail 2101 has a flipping function and rises synchronously with the upper guardrail 2101 and the lower guardrail 2102, providing effective support for the elderly when getting up and preventing them from falling suddenly when turning over or getting out of bed. Please see Figure 4 Each movable support leg 12 has a first telescopic cover 2104 fixedly installed on its inner wall, and each first telescopic cover 2104 is fixedly installed on the bearing plate 2113. Through the first telescopic cover 2104, dust or foreign objects can be effectively prevented from entering the interior of the movable support leg 12, ensuring the normal operation of transmission components such as the first lead screw 2109, extending the service life of the equipment, and maintaining the neatness and beauty of the overall structure. Please see Figure 4Each movable support leg 12 has two limiting guide rails 2114 fixedly installed on one side near the upper guardrail 2101. The interior of each bearing plate 2113 is slidably connected to the outer surface of the limiting guide rail 2114. Through the limiting guide rail 2114, the movement trajectory of the bearing plate 2113 can be precisely limited, ensuring that the upper guardrail 2101 and the lower guardrail 2102 remain stable during the lifting process, avoiding deviation or swaying, thereby providing more reliable safety protection for the elderly. Please see Figure 5 Each double key shaft 2117 has a sliding bearing 2118 fixedly installed on its outer surface. The outer surface of each sliding bearing 2118 is fixedly connected to the inner wall of the connecting plate 2111. Through the sliding bearing 2118, the frictional resistance between the double key shaft 2117 and the connecting plate 2111 can be effectively reduced, making the rotation of the double key shaft 2117 smoother and reducing energy loss.

[0023] The specific implementation of this embodiment is as follows: When an elderly person gets up, they can get out of bed between the upper guardrails 2101. For elderly people with special needs who have difficulty getting out of bed, to reduce the possibility of falling, one shaft of the dual-axis drive motor 2103 can be driven. The drive gear 2106 drives the driven gear 2107, which in turn drives the first lead screw 2109. The first lead screw 2109 drives the first matching nut 2110 to rise. The first matching nut 2110 drives the upper guardrail 2101 and the lower guardrail 2102 to rise synchronously through the connecting plate 2111 and the bearing plate 2113. At the same time, the dual-axis drive motor... Another shaft of machine 2103 drives the key shaft housing 2108 to rotate via transmission wheel 2115 and transmission belt 2116. The key shaft housing 2108 drives the double key shaft 2117 to rotate. The double key shaft 2117 drives the rotating shaft 2105 to rotate via the second bevel gear 2119 and the first bevel gear 2112. This allows the upper guardrail 2101 to rotate around the rotating shaft 2105 at a certain angle during the rising process, providing effective support for the elderly when they get up and preventing them from falling suddenly when they turn over or get out of bed. As the elderly stand up, the upper guardrail 2101 can continuously provide support for the elderly as it rises, ensuring the stability of the elderly when they get up.

[0024] Please see Figure 1 , Figure 2 and Figures 6-8 According to another embodiment of this application, a fall-prevention elderly care bed is provided. The present invention makes corresponding improvements to the technical problems mentioned in the background art. Specifically, the synchronous support mechanism 2 provided in this embodiment also includes a foot pedal synchronous unit 22. The foot pedal synchronous unit 22 is located on both sides of the bed body 11. The foot pedal synchronous unit 22 is used to raise and lower synchronously with the guardrail to provide foot support for the elderly, so that the elderly can get up and get out of bed stably and contact the ground, further reducing the possibility of falling when getting out of bed.

[0025] As a further definition of the synchronous support mechanism 2 of the present invention, the foot pedal synchronous unit 22 includes two foot pedals 2201. Two lifting blocks 2211 are fixedly installed on the side of each foot pedal 2201 near the bed frame 11. A second matching nut 2210 is fixedly installed on the inner wall of each lifting block 2211. A second lead screw 2209 is threadedly connected to the inner wall of each second lead screw 2209. A housing 2208 is rotatably connected to the outer surface of each second lead screw 2209. The outer surface of each lifting block 2211 contacts the inner wall of the housing 2208, and the outer surface of each housing 2208 contacts the inner wall of the bed frame 11. Each of the second lead screws 2209 has a third bevel gear 2212 fixedly mounted at its top. The outer surface of each third bevel gear 2212 meshes with a first single-shaft axle 2214. The outer surface of each first single-shaft axle 2214 is rotatably connected to the inner wall of the outer casing 2208. Each outer casing 2208 has a support shell 2203 fixedly mounted on its side away from the second lead screw 2209, and each support shell 2203 is fixedly mounted on the bed 11. The inner wall of each support shell 2203 is rotatably connected to a double-shaft axle 2204. The outer surface of each double-shaft axle 2204 meshes with a keyway axle 2217. The outer surface of each keyway axle 2217 is also rotatably connected to the inner wall of the outer casing 2208. The inner wall of the shell 2203 is rotatably connected. Each keyway shaft 2217 has a slidingly connected single keyway shaft 2216 inside. A synchronous gear 2215 is fixedly installed at the end of each single keyway shaft 2216 and the third bevel gear 2212 away from the supporting shell 2203. A linear slide rail 2213 is fixedly installed at the top of each outer shell 2208. The upper surface of each linear slide rail 2213 is fixedly connected to the inner bottom wall of the bed 11. A second single wheel shaft 2205 meshes with the outer surface of each double wheel shaft 2204. The outer surface of each second single wheel shaft 2205 is rotatably connected to the inner wall of the movable support leg 12. The outer surface of each second single wheel shaft 2205... Synchronous pulleys 2207 are fixedly installed on the outer surfaces of both the face and the first lead screw 2109. The outer surfaces of the two synchronous pulleys 2207 are connected to a synchronous belt 2206 for transmission. By setting a foot pedal synchronization unit 22, it can be linked with the guardrail support unit 21. When the guardrail is raised, the foot pedal 2201 rises synchronously to a suitable height, providing a stable foot support platform for the elderly. During the process of going from lying down to standing, they can always get continuous support and protection, effectively reducing the risk of falling due to sudden changes in the body's center of gravity. The foot pedal 2201 can be smoothly lowered to the initial position, which will not affect the normal walking space and can be prepared for the next use.

[0026] Please see Figure 2In this embodiment, a second telescopic cover 2202 is fixedly installed on the inner wall of each housing 2208, and each second telescopic cover 2202 is fixedly installed on the lifting block 2211. By providing the second telescopic cover 2202, dust or foreign objects can be effectively prevented from entering the interior of the housing 2208, ensuring the normal operation of transmission components such as the second lead screw 2209, and avoiding jamming or wear problems caused by the accumulation of impurities.

[0027] The specific implementation of this embodiment is as follows: When the guardrail is raised, the foot pedal 2201 in the foot pedal synchronization unit 22 will rise synchronously. Simultaneously, the dual-axis drive motor 2103 drives the first lead screw 2109 to rotate, and through the synchronous pulley 2207 and synchronous belt 2206, drives the second single-wheel shaft 2205 to rotate. The second single-wheel shaft 2205 drives the double-wheel shaft 2204 to rotate. The double-wheel shaft 2204 drives the third bevel gear 2212 to rotate through the keyway shaft 2217, the single key shaft 2216, and the synchronous gear 2215. The third bevel gear 2212 drives the second lead screw 2209 to rotate. The second matching nut 2210 is raised, and the second matching nut 2210 raises the foot pedal 2201 to a suitable height through the lifting block 2211, providing a stable foot support platform for the elderly. During the process of going from lying down to standing, the elderly can always get continuous support and protection. After the elderly finishes getting up, the upper guardrail 2101, lower guardrail 2102 and foot pedal 2201 can be smoothly lowered to the initial position by reversing the dual-axis drive motor 2103. The linear slide rail 2213 can be activated to move the foot pedal 2201 and retract the foot pedal 2201 into the bed frame 11.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] 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 alterations 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 fall-prevention elderly care bed, comprising a main body (1), characterized in that: The main body (1) includes a bed (11), and two movable support legs (12) are fixedly installed on both sides of the bed (11). A synchronous support mechanism (2) is provided on the outside of the bed (11). The synchronous support mechanism (2) includes a guardrail support unit (21), which is located on both sides of the bed (11). The guardrail support unit (21) is used to form a protective barrier on both sides of the bed (11) and to provide support when the elderly get up, so as to prevent the elderly from falling suddenly when turning over or getting out of bed. The synchronous support mechanism (2) also includes a foot pedal synchronous unit (22), which is located on both sides of the bed (11). The foot pedal synchronous unit (22) is used to raise and lower synchronously with the guardrail to provide foot support for the elderly.

2. The fall-prevention elderly care bed according to claim 1, characterized in that: The guardrail support unit (21) includes four upper guardrails (2101). Each upper guardrail (2101) has a rotating shaft (2105) fixedly installed on its inner wall. Each rotating shaft (2105) has a bearing plate (2113) fixedly installed on its outer surface. Each bearing plate (2113) has its outer surface in contact with the inner wall of the movable support leg (12). Each bearing plate (2113) has a connecting plate (2111) fixedly installed on its bottom surface. Each connecting plate (2111) has its outer surface in contact with the inner wall of the movable support leg (12). Each connecting plate (2111) has a first matching nut (2110) fixedly installed on its inner wall. Each first matching nut (2110) has a first lead screw (2109) threadedly connected to its inner wall. Each first lead screw (2109) has its outer surface rotatably connected to the inner wall of the movable support leg (12).

3. The fall-prevention elderly care bed according to claim 2, characterized in that: Each first lead screw (2109) has a driven gear (2107) fixedly installed on its bottom surface. Each driven gear (2107) has a driving gear (2106) meshing on its outer surface. Each driving gear (2106) has a dual-axis drive motor (2103) fixedly installed on its side away from the first lead screw (2109). Each dual-axis drive motor (2103) is fixedly installed on the inner wall of the movable support leg (12). Each rotating shaft (2105) has a lower guardrail (2102) rotatably connected to its outer surface. Each rotating shaft (2105) has a first bevel gear (2112) fixedly installed at its end near the movable support leg (12).

4. The fall-prevention elderly care bed according to claim 3, characterized in that: Each of the first bevel gears (2112) has a second bevel gear (2119) meshing on its outer surface. Each of the second bevel gears (2119) has a double key shaft (2117) fixedly mounted on its bottom surface. Each of the double key shafts (2117) has a key shaft housing (2108) snapped onto its outer surface. Each of the key shaft housings (2108) has its outer surface rotatably connected to the inner wall of the movable support leg (12). Each of the key shaft housings (2108) has a transmission wheel (2115) fixedly mounted on its outer surface and one of the output ends of the dual-axis drive motor (2103). The outer surfaces of the two transmission wheels (2115) are connected to a transmission belt (2116) for transmission.

5. A fall-prevention elderly care bed according to claim 2, characterized in that: Each of the movable support legs (12) has a first telescopic cover (2104) fixedly installed on its inner wall, and each of the first telescopic covers (2104) is fixedly installed on the bearing plate (2113).

6. The fall-prevention elderly care bed according to claim 2, characterized in that: Each of the movable support legs (12) has two limiting guide rails (2114) fixedly installed on one side near the upper guardrail (2101), and the interior of each bearing plate (2113) is slidably connected to the outer surface of the limiting guide rail (2114).

7. A fall-prevention elderly care bed according to claim 4, characterized in that: Each of the double key shafts (2117) has a sliding bearing (2118) fixedly mounted on its outer surface, and the outer surface of each sliding bearing (2118) is fixedly connected to the inner wall of the connecting plate (2111).

8. The fall-prevention elderly care bed according to claim 1, characterized in that: The foot pedal synchronization unit (22) includes two foot pedals (2201). Two lifting blocks (2211) are fixedly installed on the side of each foot pedal (2201) near the bed frame (11). A second matching nut (2210) is fixedly installed on the inner wall of each lifting block (2211). A second lead screw (2209) is threadedly connected to the inner wall of each second matching nut (2210). A housing (2208) is rotatably connected to the outer surface of each second lead screw (2209). The outer surface of each lifting block (2211) is in contact with the inner wall of the housing (2208). The outer surface of the outer shell (2208) is in contact with the inner wall of the bed (11). A third bevel gear (2212) is fixedly installed at the top of each second lead screw (2209). A first single wheel shaft (2214) is meshed on the outer surface of each third bevel gear (2212). The outer surface of each first single wheel shaft (2214) is rotatably connected to the inner wall of the outer shell (2208). A support shell (2203) is fixedly installed on the side of each outer shell (2208) away from the second lead screw (2209). Each support shell (2203) is fixedly installed on the bed (11).

9. A fall-prevention elderly care bed according to claim 8, characterized in that: Each of the support shells (2203) has a double-shaft (2204) rotatably connected to its inner wall. Each of the double-shafts (2204) has a keyway shaft (2217) meshing with its outer surface. The outer surface of each keyway shaft (2217) is rotatably connected to the inner wall of the support shell (2203). Each keyway shaft (2217) has a single-key shaft (2216) slidably connected inside it. Each single-key shaft (2216) and the end of the third bevel gear (2212) away from the support shell (2203) are fixedly equipped with a synchronizing gear (2215). Each of the outer shells (2208) has a... A linear slide rail (2213) is fixedly installed. The upper surface of each linear slide rail (2213) is fixedly connected to the inner bottom wall of the bed (11). The outer surface of each double wheel axle (2204) is engaged with a second single wheel axle (2205). The outer surface of each second single wheel axle (2205) is rotatably connected to the inner wall of the movable support leg (12). The outer surface of each second single wheel axle (2205) and the outer surface of the first lead screw (2109) are fixedly installed with a synchronous pulley (2207). The outer surfaces of the two synchronous pulleys (2207) are connected to a synchronous belt (2206) for transmission.

10. A fall-prevention elderly care bed according to claim 9, characterized in that: Each of the outer shells (2208) has a second telescopic cover (2202) fixedly installed on its inner wall, and each of the second telescopic covers (2202) is fixedly installed on the lifting block (2211).

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