Adjustable step for the elderly

Abstract

This application relates to an adjustable, age-friendly step, comprising a base layer and step units disposed on the base layer. Each step unit includes two step groups, staggered vertically. Each step group includes a lower step and an upper step. The lower step is fixedly disposed on the base layer, and the upper step is disposed on the lower step. A first connecting rod is hinged to the lower step, and a second connecting rod is hinged to the upper step. The first and second connecting rods are hinged together. A support component is provided on the lower step to drive the upper step to slide away from the lower step. A limiting component is provided on the first connecting rod to prevent relative rotation between the first and second connecting rods. A drive source is provided on the lower step to drive the first connecting rod to rotate, and a drive component is provided on the upper step to drive the second connecting rod to rotate. This application facilitates step height adjustment, making it easier for the elderly or people with leg disabilities to walk on steps.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building facilities, and particularly to an adjustable step for the elderly. BACKGROUND

[0002] A step generally refers to a step made of stone, concrete, etc. for people to go up and down, which is usually arranged in front of a gate or on a slope.

[0003] At present, the width of a single step is usually about 30 cm, and the height of the step is usually about 15 cm. For the elderly or people with leg diseases, it is very difficult to lift their feet over the 15 cm high step due to the aging of the body function or the interference of the illness. Therefore, for the elderly or people with leg diseases, the existing step is very inconvenient to use. SUMMARY

[0004] In view of the problems in the prior art, the present application provides an adjustable step for the elderly, which has the effect of facilitating the adjustment of the step height and making it easier for the elderly or people with leg diseases to walk on the step.

[0005] The adjustable step for the elderly provided by the present application adopts the following technical solution:

[0006] The adjustable step for the elderly comprises a base layer and a step unit arranged on the base layer, the step unit comprises two step groups, the two step groups are arranged in a staggered manner, the step group comprises a lower step body and an upper step body, the lower step body is fixedly arranged on the base layer, and the upper step body is arranged on the lower step body; a first connecting rod is hingedly connected to the lower step body, a second connecting rod is hingedly connected to the upper step body, the first connecting rod is hingedly connected to the second connecting rod, a supporting assembly for driving the upper step body to slide away from the lower step body is arranged on the lower step body, a limiting assembly for preventing the first connecting rod from rotating relative to the second connecting rod is arranged on the first connecting rod; a driving source for driving the first connecting rod to rotate is arranged on the lower step body, and a driving assembly for driving the second connecting rod to rotate is arranged on the upper step body.

[0007] By adopting the technical scheme, when the height of the steps needs to be adjusted, the upper step body is driven by the supporting assembly to slide away from the lower step body, so that a gap is formed between the upper step body and the lower step body, then the relative rotation between the first connecting rod and the second connecting rod is prevented by the limiting assembly; the first connecting rod is driven to rotate by the driving source, and the first connecting rod rotates while driving the upper step body to rotate, the upper step body is driven to rotate relative to the second connecting rod by the driving assembly, so that the upper step body is turned over, the upper step body on the lower step group is turned over to the platform layer, and the upper step body on the upper step group is turned over to the lower step body on the lower step group, so that the height of the first step is equal to the height of the upper step body or the lower step body, the height of the steps is adjusted, and the old people or people with leg diseases walk more easily on the steps.

[0008] Optionally, the lower step body is provided with a sliding block slidingly arranged thereon, the first connecting rod is rotationally arranged on the sliding block, the lower step body is provided with a first driving member for driving the sliding block to slide, and the driving source is used for driving the first connecting rod to rotate on the sliding block.

[0009] By adopting the technical scheme, after the upper step body on the lower step group contacts the ground, the sliding block is driven to slide by the first driving member, and the upper step body of the step group is close to the lower step body, so that the gap between the upper step body and the lower step body of the step group is reduced, and people walk more safely.

[0010] Optionally, the driving source comprises a first motor, a worm wheel is coaxially and fixedly arranged on a rotating shaft of the first connecting rod, a worm is coaxially and fixedly arranged on an output shaft of the first motor, the first motor is slidingly arranged on the sliding block in a direction close to or away from the worm wheel, the worm is used for meshing with the worm wheel, and the sliding block is provided with a second driving member for driving the first motor to slide.

[0011] By adopting the technical scheme, the first motor is driven to slide to the direction close to the worm wheel by the second driving member, so that the worm meshes with the worm wheel, then the worm is driven to rotate by the first motor, so that the first connecting rod is driven to rotate by the worm wheel; and since the first connecting rod needs to bear the weight of the upper step body during rotation, the first connecting rod is more stable during rotation by the arrangement of the worm wheel and the worm.

[0012] Optionally, a mounting block is slidingly arranged on the sliding block in the sliding direction of the first motor, the first motor is slidingly arranged on the mounting block in a direction close to or away from the mounting block, the mounting block is provided with a first elastic member for driving the first motor to slide away from the mounting block, and the second driving member is used for driving the mounting block to slide.

[0013] By adopting the above technical solution, the mounting block is driven to slide closer to the worm wheel by the second driving component. During the sliding process, the worm first contacts the worm wheel and compresses the first elastic component. Then, the first motor drives the worm to rotate. After the worm rotates to a certain angle, the worm meshes with the worm wheel under the elastic force of the first elastic component, which to a certain extent prevents the worm wheel and worm from rigidly contacting each other and causing damage to the worm wheel or worm.

[0014] Optionally, the drive assembly includes a second motor, a turntable, and levers. The upper stage has a mounting cavity, the second motor is fixedly mounted in the mounting cavity, the turntable is coaxially fixedly connected to the output shaft of the second motor, the side wall of the upper stage has an arc-shaped groove communicating with the mounting cavity, and two levers are fixedly mounted on the turntable. Both levers are slidably mounted in the arc-shaped groove, and the two levers are respectively located on both sides of the second connecting rod.

[0015] By adopting the above technical solution, the turntable is driven to rotate by the second motor. While the turntable is rotating, the second connecting rod is moved by two levers, so that the second connecting rod rotates relative to the upper step. When the turntable stops rotating, the second connecting rod can be limited.

[0016] Optionally, the limiting component includes an insert block and a third driving member. The insert block is slidably disposed on the first connecting rod along the length direction of the first connecting rod. A fixing block is fixedly disposed on the second connecting rod. The fixing block has an insertion slot for inserting the insert block. The third driving member is used to drive the insert block to slide.

[0017] By adopting the above technical solution, when the support component drives the upper step to slide away from the lower step, the first connecting rod and the second connecting rod rotate relative to each other. When the first connecting rod and the second connecting rod rotate to a certain angle, the insertion block and the insertion slot on the fixed block are aligned. The third driving member drives the insertion block to insert into the insertion slot on the fixed block, thereby preventing the first connecting rod and the second connecting rod from rotating relative to each other.

[0018] Optionally, the support assembly includes a top plate and a fourth driving member. The top plate is slidably disposed on the lower step in a direction close to or away from the top wall of the lower step, and the fourth driving member is used to drive the top plate to slide.

[0019] By adopting the above technical solution, the top plate is driven to slide away from the top wall of the lower step by the fourth driving component, thereby lifting the upper step and moving it away from the lower step.

[0020] Optionally, a locking block is fixedly provided at one end of the top plate away from the lower step, and a slot for inserting the locking block is provided on the upper step.

[0021] By adopting the above technical solution, when the top plate lifts the upper step, the locking block is inserted into the locking groove of the upper step, which to a certain extent prevents relative sliding between the top plate and the upper step, and makes the alignment of the locking block and the insertion groove more convenient.

[0022] Optionally, the top wall of the lower step is provided with a receiving groove along the direction perpendicular to the top wall of the lower step, a limiting rod is slidably disposed in the receiving groove, the lower step is provided with a second elastic element for driving the limiting rod to slide away from the lower step, and the upper step is provided with a limiting groove for the limiting rod to be inserted.

[0023] By adopting the above technical solution, when the upper step body is in contact with the upper surface of the lower step body, the limiting rod is inserted into the limiting groove of the upper step body under the elastic force of the second elastic element, thereby preventing relative sliding between the upper step body and the lower step body to a certain extent and increasing the stability of the upper step body on the lower step body.

[0024] Optionally, anti-slip textures are provided at both ends of the upper step and on the top wall of the lower step.

[0025] By adopting the above technical solution, the anti-slip texture effectively prevents people from slipping when walking on the upper or lower steps.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. When the step height needs to be adjusted, the support component drives the upper step to slide away from the lower step, creating a gap between them. Then, the limiting component prevents relative rotation between the first and second connecting rods. The drive source drives the first connecting rod to rotate, which in turn drives the upper step to rotate. The drive component drives the upper step to rotate relative to the second connecting rod, causing the upper step to flip. The upper step on the lower step group flips onto the platform base, and the upper step on the upper step group flips onto the lower step on the lower step group. This makes the height of each step equal to the height of the upper or lower step, thus adjusting the step height and making it easier for elderly people with mobility issues or leg ailments to walk on the steps.

[0028] 2. The second driving component drives the mounting block to slide towards the worm wheel. During the sliding process, the worm first contacts the worm wheel and compresses the first elastic element. Then, the first motor drives the worm to rotate. After the worm rotates to a certain angle, the worm meshes with the worm wheel under the elastic force of the first elastic element, which to a certain extent prevents the worm wheel and worm from rigidly contacting each other and causing damage to the worm wheel or worm.

[0029] 3. When the upper step body is in contact with the upper surface of the lower step body, the limiting rod is inserted into the limiting groove of the upper step body under the elastic force of the second elastic element, thereby preventing relative sliding between the upper step body and the lower step body to a certain extent and increasing the stability of the upper step body on the lower step body. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0031] Figure 2 This is a structural unfolded diagram of an embodiment of this application;

[0032] Figure 3 This is a partial structural schematic diagram of an embodiment of this application, mainly used to illustrate the structural schematic diagram of the lower-level body;

[0033] Figure 4 yes Figure 3 Enlarged view of section A;

[0034] Figure 5 This is a partial structural schematic diagram of an embodiment of this application, mainly used to illustrate the structural schematic diagram of the upper-level body;

[0035] Figure 6 yes Figure 5 Enlarged view of section B;

[0036] Figure 7 This is a partial structural schematic diagram of an embodiment of this application, mainly used to illustrate the structural schematic diagram of the lower-order body.

[0037] Explanation of reference numerals in the attached drawings: 1. Platform base; 2. Step unit; 21. Step assembly; 211. Lower step; 2111. Cavity; 2112. Slide groove; 2113. Slider; 2114. First driving component; 2115. Receiving groove; 2116. Limiting rod; 2117. Second elastic component; 212. Upper step; 2121. Second connecting rod; 2122. Mounting cavity; 2123. Second fixing rod; 2124. Arc groove; 3. First fixing rod; 31. Transmission rod; 31 1. Worm gear; 32. First connecting rod; 33. First motor; 331. Worm; 34. Support frame; 341. Second driving component; 342. Mounting block; 3421. Connecting block; 3422. First elastic component; 4. Limiting assembly; 41. Insertion block; 42. Third driving component; 5. Fixing block; 51. Insertion slot; 6. Drive assembly; 61. Second motor; 62. Turntable; 63. Lever; 7. Support assembly; 71. Top plate; 711. Locking block; 72. Fourth driving component. Detailed Implementation

[0038] The following is in conjunction with the appendix Figures 1-7 This application will be described in further detail.

[0039] This application discloses an adjustable, age-appropriate step. (See also...) Figure 1 It includes a base layer 1 and a step unit 2 set on the base layer 1. The step unit 2 includes two step groups 21, which are staggered vertically. The step group 21 includes a lower step body 211 and an upper step body 212. The lower step body 211 is fixedly set on the base layer 1, and the upper step body 212 is set on the lower step body 211.

[0040] Reference Figure 1 , 2 The upper step 212 and the lower step 211 have the same width and height. When two or more step units 2 need to be set, the distance between two adjacent step units 2 is greater than the width of the lower step 211. In this embodiment, the distance between two adjacent step units 2 is equal to twice the width of the lower step 211.

[0041] Reference Figure 3 The lower step 211 has a cavity 2111 inside. Both sides of the lower step 211 have grooves 2112 that communicate with the inside of the cavity 2111 along the direction parallel to the top wall of the lower step 2111. Sliding blocks 2113 are slidably arranged in both grooves 2112. A first driving member 2114 for driving the two sliding blocks 2113 to slide is provided in the cavity 2111 of the lower step 211. The first driving member 2114 includes a first cylinder. The first cylinder is fixedly arranged in the cavity 2111 of the lower step 211. The two sliding blocks 2113 are fixedly connected by a first fixing rod 3. The piston rod of the first cylinder is fixedly connected to the first fixing rod 3.

[0042] Reference Figure 3 , 4 A transmission rod 31 is rotatably mounted on the first fixed rod 3. The length direction of the transmission rod 31 is parallel to the length direction of the first fixed rod 3. Both ends of the transmission rod 31 are rotatably connected to the two sliders 2113. A first connecting rod 32 is rotatably mounted on one end of each slider 2113 that is located outside the lower step 211. The length directions of the two first connecting rods 32 are parallel, and both first connecting rods 32 are fixedly connected to the transmission rod 31.

[0043] Reference Figure 4 The first fixed rod 3 is provided with a drive source for driving the transmission rod 31 to rotate. The drive source includes a first motor 33. A support frame 34 is fixedly provided on the first fixed rod 3. The first motor 33 is slidably provided on the support frame 34 in the direction of approaching or away from the transmission rod 31. A second drive member 341 for driving the first motor 33 to slide is provided on the support frame 34. A worm gear 311 is coaxially fixedly provided on the transmission rod 31. A worm 331 is coaxially fixedly provided on the output shaft of the first motor 33, and the worm 331 is used to mesh with the worm gear 311.

[0044] ReferenceFigure 4 The second driving component 341 includes a second cylinder, which is fixedly mounted on the support frame 34. A mounting block 342 is fixedly mounted on the piston rod of the second cylinder. A mounting groove is formed on the bottom wall of the mounting block 342 along the sliding direction of the mounting block 342. A connecting block 3421 is slidably mounted in the mounting groove. A first limiting block is fixedly mounted on the connecting block 3421. A first connecting groove communicating with the mounting groove is formed on the side wall of the mounting groove along the sliding direction of the connecting block 3421. The first limiting block is slidably mounted in the first connecting groove. The first motor 33 is fixedly connected to the connecting block 3421.

[0045] Reference Figure 4 The mounting block 342 is provided with a first elastic element 3422 for driving the connecting block 3421 to slide away from the bottom wall of the mounting groove. The first elastic element 3422 includes a first compression spring, one end of which abuts against the bottom wall of the mounting groove, and the other end of which abuts against the connecting block 3421. The mounting block 342 is driven to slide closer to the worm wheel 311 by the second cylinder. During the sliding process, the worm 331 first contacts the worm wheel 311. The connecting block 3421 slides in the mounting groove, and the first compression spring continues to be compressed. Then, the first motor 33 drives the worm 331 to rotate. After the worm 331 rotates to a certain angle, the worm 331 meshes with the worm wheel 311 under the elastic force of the first compression spring, which to a certain extent prevents the worm wheel 311 and the worm 331 from making rigid contact and causing damage to the worm wheel 311 or the worm 331.

[0046] Reference Figure 5 , 6 The upper step 212 has two second connecting rods 2121 hinged to both sides of the upper step 212. The upper step 212 has an installation cavity 2122 inside. The two second connecting rods 2121 are fixedly connected by a second fixing rod 2123. The second fixing rod 2123 passes through the installation cavity 2122 and the length directions of the two second connecting rods 2121 are parallel. The first connecting rod 32 located on the same side is hinged to the second connecting rod 2121.

[0047] Reference Figure 6 The first connecting rod 32 is provided with a limiting component 4 to prevent the first connecting rod 32 from rotating relative to the second connecting rod 2121. The limiting component 4 includes an insert block 41 and a third driving member 42. The insert block 41 is slidably disposed on the first connecting rod 32 along the length direction of the first connecting rod 32. The third driving member 42 includes a third cylinder, which is fixedly disposed on the first connecting rod 32. The piston rod of the third cylinder is fixedly connected to the insert block 41. A fixing block 5 is fixedly disposed on the second connecting rod 2121. The fixing block 5 has an insertion groove 51 for the insert block 41 to be inserted along the length direction of the second connecting rod 2121.

[0048] Reference Figure 6The upper step 212 has a drive assembly 6 inside the mounting cavity 2122 for driving the second connecting rod 2121 to rotate. The drive assembly 6 includes a second motor 61, a turntable 62, and levers 63. The second motor 61 is fixedly installed inside the mounting cavity 2122 of the upper step 212. The turntable 62 is coaxially fixedly connected to the output shaft of the second motor 61. The side wall of the upper step 212 has an arc-shaped groove 2124 communicating with the mounting cavity 2122. Two levers 63 are fixedly installed on the turntable 62. Both levers 63 are slidably installed in the arc-shaped groove 2124 and are located on both sides of the second connecting rod 2121. The second motor 61 drives the turntable 62 to rotate. While the turntable 62 is rotating, the two levers 63 move the second connecting rod 2121, thereby causing the second connecting rod 2121 to rotate relative to the upper step 212. When the turntable 62 stops rotating, the second connecting rod 2121 can be limited.

[0049] Reference Figure 3 , 5 Anti-slip textures are provided on both ends of the upper step 212 and on the top wall of the lower step 211; the anti-slip textures effectively prevent people from slipping when walking on the upper step 212 or the lower step 211.

[0050] Reference Figure 7 The lower step 211 is provided with a support component 7 for driving the upper step 212 to slide away from the lower step 211. The support component 7 includes a top plate 71 and a fourth driving member 72. The top wall of the lower step 211 is provided with a placement groove along the direction perpendicular to the top wall of the lower step 211. The placement groove is adapted to the top plate 71. The bottom wall of the placement groove is provided with a storage groove along the direction perpendicular to the top wall of the lower step 211. The fourth driving member 72 includes a fourth cylinder. The fourth cylinder is fixedly installed in the storage groove. The piston rod of the fourth cylinder is fixedly connected to the top plate 71.

[0051] Reference Figure 7 A locking block 711 is fixedly provided at the end of the top plate 71 away from the lower step 211, and the two ends of the upper step 212 are provided with slots for the locking block 711 to be inserted; when the top plate 71 lifts the upper step 212, the locking block 711 is inserted into the slot of the upper step 212, which to a certain extent prevents the relative sliding between the top plate 71 and the upper step 212.

[0052] Reference Figure 7 The top wall of the lower step 211 has a receiving groove 2115 in the direction perpendicular to the top wall of the lower step 211. A limiting rod 2116 is slidably arranged in the receiving groove 2115. A second limiting block is fixedly arranged on the limiting rod 2116. The side wall of the receiving groove 2115 has a second connecting groove communicating with the receiving groove 2115 along the sliding direction of the limiting rod 2116. The second limiting block is slidably arranged in the second connecting groove. Both ends of the upper step 212 have limiting grooves for the insertion of the limiting rod 2116.

[0053] Reference Figure 7 The receiving groove 2115 is provided with a second elastic element 2117 for driving the limiting rod 2116 to slide away from the bottom wall of the receiving groove 2115. The second elastic element 2117 includes a second compression spring. One end of the second compression spring abuts against the bottom wall of the receiving groove 2115, and the other end of the second compression spring abuts against the limiting rod 2116. When the upper step 212 is in contact with the upper surface of the lower step 211, the limiting rod 2116 is inserted into the limiting groove of the upper step 212 under the elastic force of the second compression spring, thereby preventing relative sliding between the upper step 212 and the lower step 211 to a certain extent and increasing the stability of the upper step 212 on the lower step 211.

[0054] The implementation principle of an adjustable age-friendly step according to an embodiment of this application is as follows: When the step height needs to be adjusted, the top plate 71 is driven by the fourth cylinder to slide away from the top wall of the lower step 211, thereby lifting the upper step 212 away from the lower step 211, and making the length directions of the first connecting rod 32 and the second connecting rod 2121 parallel. The third cylinder drives the insert block 41 to be inserted into the insertion slot 51 on the fixing block 5, thereby preventing the first connecting rod 32 and the second connecting rod 2121 from rotating relative to each other.

[0055] The second cylinder drives the first motor 33 to slide closer to the transmission rod 31, causing the worm gear 311 to mesh with the worm 331. This starts the first motor 33, driving the worm 331 to rotate. The worm gear 311 and worm 331 then drive the transmission rod 31 to rotate, thereby driving the two first connecting rods 32 to rotate. Simultaneously, the rotation of the two first connecting rods 32 causes the upper step 212 to rotate as well. The second motor 61 drives the turntable 62 to rotate. As the turntable 62 rotates, the two levers 63 actuate the second connecting rod 2121, thereby... The second fixing rod 2123 causes the two second connecting rods 2121 to rotate relative to the upper step body 212, causing the upper step body 212 to flip. The upper step body 212 located on the lower step group 21 flips onto the platform base 1, and the upper step body 212 located on the upper step group 21 flips onto the lower step body 211 located on the lower step group 21. This reduces the height of each step to half of the original step height, thereby adjusting the step height and making it easier for elderly people with mobility issues or people with leg ailments to walk on the steps.

[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An adjustable, age-appropriate step, characterized in that: It includes a base layer (1) and a step unit (2) set on the base layer (1). The step unit (2) includes two step groups (21), which are staggered vertically. The step group (21) includes a lower step body (211) and an upper step body (212). The lower step body (211) is fixedly set on the base layer (1), and the upper step body (212) is set on the lower step body (211). A first connecting rod (32) is hinged to the lower step (211), and a second connecting rod (2121) is hinged to the upper step (212). The first connecting rod (32) and the second connecting rod (2121) are hinged together. A support assembly (7) is provided on the lower step (211) to drive the upper step (212) to slide away from the lower step (211). A limiting assembly (4) is provided on the first connecting rod (32) to prevent the first connecting rod (32) and the second connecting rod (2121) from rotating relative to each other. The lower step (211) is provided with a drive source for driving the first connecting rod (32) to rotate, and the upper step (212) is provided with a drive assembly (6) for driving the second connecting rod (2121) to rotate.

2. The adjustable aging-friendly step according to claim 1, characterized in that: A slider (2113) is slidably disposed on the lower step (211), and the first connecting rod (32) is rotatably disposed on the slider (2113). A first driving member (2114) for driving the slider (2113) to slide is disposed on the lower step (211), and the driving source is used to drive the first connecting rod (32) to rotate on the slider (2113).

3. The adjustable aging-friendly step according to claim 2, characterized in that: The driving source includes a first motor (33), a worm gear (311) is coaxially fixed on the rotating shaft of the first connecting rod (32), a worm (331) is coaxially fixed on the output shaft of the first motor (33), the first motor (33) is slidably mounted on the slider (2113) in a direction close to or away from the worm gear (311), and the worm (331) is used to mesh with the worm gear (311). The slider (2113) is provided with a second driving member (341) for driving the first motor (33) to slide.

4. The adjustable aging-friendly step according to claim 3, characterized in that: The slider (2113) is slidably provided with a mounting block (342) along the sliding direction of the first motor (33). The first motor (33) is slidably provided on the mounting block (342) in a direction close to or away from the mounting block (342). The mounting block (342) is provided with a first elastic member (3422) for driving the first motor (33) to slide away from the mounting block (342). The second driving member (341) is used to drive the mounting block (342) to slide.

5. The adjustable aging-friendly step according to claim 1, characterized in that: The drive assembly (6) includes a second motor (61), a turntable (62), and levers (63). An installation cavity (2122) is provided in the upper step (212). The second motor (61) is fixedly installed in the installation cavity (2122) of the upper step (212). The turntable (62) is coaxially and fixedly connected to the output shaft of the second motor (61). An arc-shaped groove (2124) communicating with the installation cavity (2122) is provided on the side wall of the upper step (212). Two levers (63) are fixedly installed on the turntable (62). Both levers (63) are slidably installed in the arc-shaped groove (2124), and the two levers (63) are respectively located on both sides of the second connecting rod (2121).

6. The adjustable aging-friendly step according to claim 1, characterized in that: The limiting component (4) includes a plug (41) and a third driving member (42). The plug (41) is slidably disposed on the first connecting rod (32) along the length direction of the first connecting rod (32). A fixing block (5) is fixedly disposed on the second connecting rod (2121). The fixing block (5) has a plug groove (51) for the plug (41) to be inserted. The third driving member (42) is used to drive the plug (41) to slide.

7. An adjustable aging-friendly step according to claim 6, characterized in that: The support assembly (7) includes a top plate (71) and a fourth drive member (72). The top plate (71) is slidably disposed on the lower step (211) in a direction close to or away from the top wall of the lower step (211). The fourth drive member (72) is used to drive the top plate (71) to slide.

8. The adjustable aging-friendly step according to claim 7, characterized in that: A locking block (711) is fixedly provided at one end of the top plate (71) away from the lower step (211), and a slot for inserting the locking block (711) is provided on the upper step (212).

9. An adjustable aging-friendly step according to claim 1, characterized in that: The top wall of the lower step (211) is provided with a receiving groove (2115) in a direction perpendicular to the top wall of the lower step (211). A limiting rod (2116) is slidably arranged in the receiving groove (2115). A second elastic element (2117) is provided on the lower step (211) to drive the limiting rod (2116) to slide away from the lower step (211). A limiting groove is provided on the upper step (212) for the insertion of the limiting rod (2116).

10. An adjustable aging-friendly step according to claim 1, characterized in that: Anti-slip textures are provided at both ends of the upper step (212) and on the top wall of the lower step (211).

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