Up and down stairs assistance buffer auxiliary staircase device

Abstract

The present invention discloses a novel up-and-down staircase assisting and buffering auxiliary staircase device, which includes a bottom support structure. On the left and right sides of the bottom support structure, a downward step structure and an upward step structure are respectively provided; the bottom support structure has a plurality of horizontal strip-shaped structures and a support surface arranged in an overall stepped structure; the upward step structure includes upper pedals respectively arranged above the support surface, and the upper surface of the upper pedal is in the same horizontal direction as the previous support surface; a first spring structure is provided between the upper pedal and the support surface; a pull rod structure is provided between two adjacent upper pedals, and after the upper pedal is stressed and compresses the corresponding first spring structure to a certain amount, the pull rod structure can apply a downward pulling force to the upper pedal above to make the upper pedal compress the first spring structure below it and move downward; the present invention has the advantages of simple structure, being able to specifically assist and buffer the up-and-down staircase, and having a better assisting and buffering effect.

Description

Technical Field

[0001] The present invention belongs to the technical field of stairs, and particularly relates to an up-and-down stairs assistance and buffer auxiliary stair device. Background Art

[0002] With the continuous progress of technology and the rapid development of the economy, people's living standards have been significantly improved. After meeting the basic functional requirements, the aspects of food, clothing, housing, and transportation related to the national economy and people's livelihood are also moving towards a more comfortable direction. Taking housing, which is a major investment and has a long usage time in people's lives, as an example, the previous urban residences were mainly multi-story residences, and in the past decade, they have been developing towards high-rise residences. Multi-story residences (5 - 8 floors) and high-rise residences each have their own advantages: multi-story residences are relatively quiet and have sufficient sunlight, but one has to climb stairs every day, which is extremely strenuous, especially for patients or the elderly, and it is very inconvenient to go up and down the stairs; although high-rise residences are densely populated, have short sunshine hours, and fewer parking spaces, the elevators in high-rise residences are very convenient for going up and down, saving the trouble of climbing stairs. This is especially a great solution for patients, the elderly, children, or people with limited mobility. Moreover, in many existing high-rise residences, there are designs with duplex floors, and stairs are used in each duplex household.

[0003] Currently, the aging problem is becoming increasingly serious, and the proportion of the elderly population over 60 years old exceeds 25%. Going up and down the stairs every day, the difficulty for the elderly to go up and down the stairs is an inevitable problem. When the elderly climb stairs, there is no corresponding assistance device on the stairs, making it laborious for the elderly to climb the stairs. When the elderly go down the stairs, there is no corresponding buffer on the stairs, which can easily cause fatigue and damage to the bones and joints of the elderly when going down the stairs.

[0004] In the prior art, Chinese Patent (CN206751149U) discloses a linear moving sliding table type stair assistance device; Chinese Patent Application (CN109205437A) discloses an intelligent up-stair assistance device; Chinese Patent Application (CN109969910A) discloses a moonwalk stair assistance device; Chinese Patent Application (CN112607558A) discloses an assistance device for going up and down stairs; Chinese Patent (CN210260781U) discloses a stair with a lifting assistance plate. However, in the above patent structures, the up-stair part and the down-stair part adopt the same structure, and cannot provide targeted assistance and buffering for going up and down the stairs respectively. Secondly, in the above structures, the assistance effect for going up the stairs is poor. When going up the stairs, the height of the stair steps remains unchanged, which is not convenient for the elderly to go up the stairs, and the assistance effect is not obvious. The buffering effect for going down the stairs is poor. When going down the stairs, the height of the stair steps remains unchanged, and the downstairs buffering is poor.

[0005] Therefore, how to provide a stair assisting and buffering auxiliary stair device with a simple structure, which can provide targeted assistance and buffering for going up and down stairs, has better assistance and buffering effects, and is more convenient to use, has become a technical problem to be solved by technical personnel in this field. Summary of the invention

[0006] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: how to provide a stair-going and stair-going assisting and buffering auxiliary stair device with a simple structure, which can specifically assist and buffer the going up and down stairs, has better assisting and buffering effects, and is more convenient to use.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] The device for assisting in ascending and descending stairs with a buffer is characterized in that it comprises a bottom support structure, and a descending step structure and an ascending step structure are respectively arranged on the left and right sides of the bottom support structure; the bottom support structure has a plurality of horizontal long strip structures and a support surface arranged in a stepped structure as a whole; the ascending step structure comprises upper pedals respectively arranged above the support surface, and the upper surface of the upper pedal is in the same horizontal direction as the upper support surface; a first spring structure is arranged between the upper pedal and the support surface; a pull rod structure is arranged between two adjacent upper pedals, and after the upper pedal is compressed by the force corresponding to the first spring structure to a certain amount, the pull rod structure can apply a downward pulling force to the upper upper pedal so that the upper pedal compresses the first spring structure below it and moves downward; the descending step structure comprises each A lower pedal is correspondingly arranged above the supporting surface, and the upper surface of the lower pedal is in the same horizontal direction as the upper supporting surface; a second spring structure is provided between the lower pedal and the supporting surface; a horizontal outward limiting rod is provided under the lower pedal, and a limiting plate with a long strip structure and an inclined setting is provided on the outer side of the lower pedal, and a clamping limiting opening is provided on the limiting plate corresponding to the limiting rod, so that after the lower pedal is compressed by the force corresponding to the second spring mechanism to a certain amount, the limiting rod corresponding to the lower pedal can be correspondingly hooked in the clamping limiting opening to overcome the elastic force of the second spring machine to limit the lower pedal from moving upward; and a limiting plate tilting movement control mechanism is provided between the limiting plate and the bottom supporting structure, so that the limiting plate can tilt and move downward and the corresponding limiting rod can be disengaged from the clamping limiting opening, so that the corresponding lower pedal moves upward and resets.

[0009] In this way, in the above device, by respectively designing the downward step structure and the upward step structure, it is possible to more specifically buffer and assist during going downstairs and upstairs. When a pedestrian goes upstairs, when the upper pedal is subjected to the gravity of the pedestrian stepping on it, the upper pedal is compressed by the force to a certain extent corresponding to the first spring structure. After that, the pull rod structure can apply a downward pulling force to an upper pedal above and cause the upper pedal to compress the first spring structure below it and move downward. In this way, the height between the stepped-on upper pedal and the previous upper pedal decreases. Then, when stepping onto the previous upper pedal, the gravity received by the latter upper pedal begins to decrease, and the first spring structure can cause the upper pedal to return to its original height and assist the pedestrian. When a pedestrian goes downstairs, when the lower pedal is subjected to the gravity of the pedestrian stepping on it, the lower pedal compresses the second spring structure below it and buffers the pedestrian. At the same time as buffering the pedestrian, the lower pedal moves vertically downward. After the lower pedal is compressed by the force to a certain extent corresponding to the second spring mechanism, the limiting rod corresponding to the lower pedal can be correspondingly hooked into the clamping and limiting port to overcome the elastic force of the second spring mechanism to limit the upward movement of the lower pedal. This makes the height between the lower pedal and a lower pedal below it decrease, making it more convenient for the pedestrian to complete the downstairs operation. And the provided limiting plate tilt movement control mechanism enables the limiting plate to tilt downward and makes the corresponding limiting rod disengage from the clamping and limiting port, causing the corresponding lower pedal to move upward and reset. It is more convenient to use. In the above structure, both the downward step structure and the upward step structure can better suit the use of the elderly, can complete buffering and assistance, and also reduce the step height of going up and down the stairs to better suit the elderly. The above structure is simple in structure, can specifically assist and buffer going up and down the stairs, and has a better assistance and buffering effect.

[0010] As an optimization, both the upper pedal and the lower pedal are rectangular plate structures, and the length directions of the upper pedal and the lower pedal are both arranged along the length direction of the corresponding support surface, and the opposite ends of the upper pedal and the lower pedal above the same support surface are arranged at intervals.

[0011] In this way, the structure is simpler and the layout is more reasonable.

[0012] As an optimization, the first spring structure includes first backing plates respectively and adhesively connected to the supporting surface and the lower surface of the upper pedal. At the four corner positions of the opposite surfaces of the two first backing plates, a first lower flange and a first upper flange are respectively connected; the middle parts of the first lower flange and the first upper flange respectively protrude inwards to form a first lower docking cylinder and a first upper docking cylinder. A vertically arranged first docking rod is provided between the first lower docking cylinder and the first upper docking cylinder. A vertical first docking pipe is provided in the first lower docking cylinder. The two ends of the first docking rod can be slidably inserted into the first docking pipe and the first upper docking cylinder respectively, and a first helical spring is sleeved on the first docking rod. The lower end of the first helical spring can abut and support on the upper end surface of the first docking pipe, and the upper end of the first helical spring can extend into and abut against the bottom of the first upper docking cylinder; and the first lower flange and the first upper flange have a tendency to move away from each other.

[0013] In this way, the design of the first spring structure is more reasonable, which can make the buffering and boosting of the upper pedal more uniform. After the upper pedal is stressed, it can be more stable, and after the gravity is removed, it can move upward better to complete the boosting.

[0014] As an optimization, the second spring mechanism includes second backing plates respectively and adhesively connected to the supporting surface and the lower surface of the lower pedal. At the four corner positions of the opposite surfaces of the two second backing plates, a second lower flange and a second upper flange are respectively connected; the middle parts of the second lower flange and the second upper flange respectively protrude inwards to form a second lower docking cylinder and a second upper docking cylinder. A vertically arranged second docking rod is provided between the second lower docking cylinder and the second upper docking cylinder. A vertical second docking pipe is provided in the second lower docking cylinder. The two ends of the second docking rod can be slidably inserted into the second docking pipe and the second upper docking cylinder respectively, and a second helical spring is sleeved on the second docking rod. The lower end of the second helical spring can abut and support on the upper end surface of the second docking pipe, and the upper end of the second helical spring can extend into and abut against the bottom of the second upper docking cylinder; and the second lower flange and the second upper flange have a tendency to move away from each other.

[0015] In this way, the design of the second spring mechanism is more reasonable. After the lower pedal is stressed, it can complete buffering better.

[0016] As an optimization, the first backing plate and the first lower flange, the first backing plate and the first upper flange, the second backing plate and the second lower flange, and the second backing plate and the second upper flange are all fixedly connected together by screws.

[0017] In this way, the structure is simpler and more convenient for disassembly, assembly and replacement.

[0018] As an optimization, the pull rod structure includes an upper connecting block which is connected to the front side of the lower surface of the upper pedal and arranged horizontally along the upper pedal. The end face of the upper connecting block extends to the outside of the front side of the upper pedal. A pull rod which is vertically downward is connected to the upper connecting block. The lower end of the pull rod passes through a clearance opening provided on an upper pedal below, and a lower connecting block is provided on the rear side of the lower surface of the lower pedal corresponding to the clearance opening. The lower end of the pull rod passes through a vertical hole provided on the lower connecting block, and a limit nut is provided at the lower end of the pull rod and spaced from the lower surface of the lower connecting block.

[0019] In this way, the pull rod structure design is simpler, and the position of the limit nut on the pull rod can be adjusted more conveniently to change the magnitude of the pulling force on the upper pedal, thereby achieving the purpose of adjusting the buffering effect.

[0020] As an optimization, the number of the upper connecting blocks is two and they are spaced apart from each other along the longitudinal direction of the upper pedal.

[0021] In this way, the design is more reasonable and the force is more uniform.

[0022] As an optimization, a threaded connection hole is provided on the upper connection block, the upper end of the pull rod is threadedly connected in the threaded connection hole, and a locking nut is also provided at the upper end of the pull rod, and the locking nut is supported on the upper connection block.

[0023] In this way, it is more convenient to connect and fix the upper connecting block and the pull rod, and it is convenient to disassemble, assemble and replace.

[0024] As an optimization, a U-shaped notch is provided on the limit plate corresponding to the limit rod, and the upper end of the front side surface of the U-shaped notch extends as a whole toward the middle position of the U-shaped notch to form a protrusion so that the U-shaped notch and the protrusion as a whole form the said clamping limit opening; and the far side surface of the protrusion is a mating inclined surface with the lower end tilted inward and used for sliding cooperation with the limit rod.

[0025] In this way, after the lower pedal compresses the second spring structure, the limiting rod can slide better and hook into the clamping limiting opening to overcome the elastic force of the second spring mechanism to limit the lower pedal from moving upward.

[0026] As an optimization, the bottom support structure includes a bottom support plate, which is continuously bent upward and horizontally to form staggered and interconnected horizontal and vertical sections, so that the support plate is arranged in a stepped structure as a whole; and the long horizontal surface on the upper side of the horizontal section forms the support surface; and baffles that are overall in a right-angle trapezoidal structure and are vertically arranged are also connected on both sides of the support plate.

[0027] In this way, the bottom support structure is simpler and the design is more reasonable, so that the whole device can be better modularized and more convenient to install and use.

[0028] As an optimization, a vertically arranged fixing block is connected below the lower pedal, a horizontal fixing hole is provided on the fixing block, and the end of the limiting rod is plugged and connected in the fixing hole.

[0029] In this way, the connection and fixation between the limit rod and the lower pedal are more convenient.

[0030] As an optimization, the limit plate tilt movement control mechanism includes a limit plate tilt movement guide structure; it also includes a limit plate tilt movement drive structure arranged at the upper end of the limit plate and a limit plate tilt movement reset structure arranged at the front end of the limit plate.

[0031] In this way, the design of the limit plate tilting and moving control mechanism is more reasonable and more convenient to operate and use.

[0032] As an optimization, the limiting plate tilting movement guide structure includes guide grooves arranged at the corner positions of the horizontal section and the vertical section on the support plate, and the corresponding sliding fit on the lower side of the limiting plate is arranged in the guide groove.

[0033] In this way, the design of the limiting plate tilting and moving guide structure is simpler.

[0034] As an optimization, the lower end face of the limit plate is a vertical abutment end face; the tilting movement reset structure of the limit plate includes a reset rod connected to the abutment end face and arranged horizontally outward, an abutment plate is provided on the support plate and horizontally spaced from the abutment end face, the outer end of the reset rod passes through the clearance hole provided on the abutment plate, and a reset spring is sleeved on the reset rod, and the two ends of the reset spring are respectively abutted and supported on the abutment end face and the abutment plate to push the limit plate to have a tilted upward movement tendency.

[0035] In this way, the tilting movement and resetting structure of the limit plate is simpler and can better promote the reset of the limit plate.

[0036] As an optimization, the number of the reset rods is two and they are vertically spaced apart.

[0037] In this way, the force applied to the limit plate is more stable and the design is more reasonable.

[0038] As an optimization, a fixed block is provided on the front side of the abutment plate spaced apart from the support plate. The side of the limit plate opposite to the baffle plate is bent and extended to form a slide plate parallel to the baffle plate. A horizontal guide bar is protruded on the slide plate and slides with the guide groove on the baffle plate. A horizontal threaded hole is provided on the fixed block, and an abutment rod is provided in the threaded hole. The front end of the abutment rod abuts and supports on the limit plate to limit its position.

[0039] In this way, the resetting force applied to the limiting plate can be adjusted, and the adjustment structure is simple in design and more convenient to operate.

[0040] As an optimization, the limiting plate tilting movement driving structure includes a guiding strip connected and fixed to the uppermost vertical section on the support plate. The guiding strip is arranged vertically, and there are two pairs of guiding strips, which are respectively located on both sides of the upper end of the limiting plate. A vertically arranged driving strip with a long strip structure is provided between the guiding strips. End cover blocks are provided at the upper ends of the two guiding strips. A part of the upper end of the driving strip extends upward to form an operating rod, which passes through the through hole on the end cover block; the upper end surface of the limiting plate is a vertical installation surface, and a pulley is rotatably installed vertically on the installation surface through a bracket. A driving inclined surface is provided on one side of the driving strip corresponding to the limiting plate, and the driving inclined surface is arranged corresponding to the pulley, and the upper end of the driving inclined surface is inclined towards the installation surface; and a vertical thrust spring is provided at the lower end of the driving strip. When the operating rod is pushed vertically downward to make the driving strip move downward against the elastic force of the thrust spring, the driving inclined surface is in rolling cooperation with the pulley and can push the limiting plate to move downward obliquely.

[0041] In this way, the design of the limiting plate tilting movement driving structure is simple. By the cooperation of the inclined surface and the pulley, a vertical force is converted into a force to push the limiting plate to tilt downward. The design is simple and convenient to use.

[0042] As an optimization, a driving pedal is further provided above the operating rod to drive the operating rod to move downward and make the driving strip below the operating rod move vertically downward.

[0043] In this way, it is more convenient to drive the operating rod by stepping on the pedal. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic structural diagram in the specific embodiment of the present invention.

[0045] Figure 2 For Figure 1 The schematic structural diagram after omitting the uppermost lower pedal.

[0046] Figure 3 For Figure 2 The partial enlarged schematic diagram at position A in

[0047] Figure 4 For Figure 2 The partial enlarged schematic diagram at position B in

[0048] Figure 5 For Figure 1 The schematic structural diagram after omitting one of the lowermost upper pedals and the baffle.

[0049] Figure 6 For Figure 5 The partial enlarged schematic diagram at position C in

[0050] Figure 7 For Figure 1The schematic diagram of the structure viewed from above after one of the lower pedals is omitted.

[0051] Figure 8 for Figure 7 Schematic diagram of DD cross-sectional structure.

[0052] Figure 9 for Figure 8 A partial enlarged schematic diagram of position E in the middle. DETAILED DESCRIPTION

[0053] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0054] When implementing: Figures 1 to 9 As shown, the stair-climbing and -walking assisting and buffering device is characterized in that it comprises a bottom supporting structure 1, and a descending step structure 2 and an ascending step structure 3 are respectively arranged on the left and right sides of the bottom supporting structure; the bottom supporting structure has a plurality of horizontal long strip structures and a supporting surface arranged in a stepped structure as a whole; the ascending step structure comprises upper pedals 4 respectively arranged above the supporting surface, and the upper surface of the upper pedal is in the same horizontal direction as the previous supporting surface; a first spring structure 5 is arranged between the upper pedal and the supporting surface; a pull rod structure is arranged between two adjacent upper pedals, and after the upper pedal is compressed by the force corresponding to the first spring structure to a certain amount, the pull rod structure can apply a downward pulling force to the upper upper pedal so that the upper pedal compresses the first spring structure below it and moves downward; the descending step structure comprises Each of the lower pedals 6 is correspondingly arranged above the supporting surface, and the upper surface of the lower pedal is in the same horizontal direction as the upper supporting surface; a second spring structure 7 is provided between the lower pedal and the supporting surface; a horizontal outward limiting rod 8 is provided below the lower pedal, and a limiting plate 9 with a long strip structure and inclined arrangement is provided on the outer side of the lower pedal, and a clamping limiting opening 10 is provided on the limiting plate corresponding to the limiting rod, so that after the lower pedal is compressed by the force corresponding to the second spring mechanism to a certain amount, the limiting rod corresponding to the lower pedal can be correspondingly hooked in the clamping limiting opening to overcome the elastic force of the second spring machine to limit the lower pedal from moving upward; and a limiting plate tilting movement control mechanism is provided between the limiting plate and the bottom supporting structure, so that the limiting plate can tilt and move downward and the corresponding limiting rod can be disengaged from the clamping limiting opening, so that the corresponding lower pedal moves upward and resets.

[0055] In this way, in the above device, by designing the descending step structure and ascending step structure respectively, it is possible to provide more targeted buffering and assistance for going downstairs and going upstairs. When pedestrians go upstairs, the upper pedal is subjected to the gravity of the pedestrians stepping on it. After the upper pedal is compressed to a certain amount by the force corresponding to the first spring structure, the pull rod structure can apply a downward pulling force to the upper upper pedal and make the upper pedal compress the first spring structure below it and move downward, so that the height between the stepped upper pedal and the previous upper pedal is reduced, and then when the pedestrians step to the previous upper pedal, the gravity on the latter upper pedal begins to decrease, and the first spring structure can make the upper pedal return to its original height and provide assistance to the pedestrians. When pedestrians go down the stairs, the lower pedal is subjected to the gravity of the pedestrians' stepping, and the lower pedal compresses the second spring structure below and plays a buffering role for the pedestrians. While playing a buffering role for the pedestrians, the lower pedal moves vertically downward. After the lower pedal is compressed by the force corresponding to the second spring mechanism to a certain amount, the limit rod corresponding to the lower pedal can be correspondingly hooked in the clamping limit opening to overcome the elastic force of the second spring machine to limit the lower pedal from moving upward, which reduces the height between the lower pedal and a lower pedal below it, making it more convenient for pedestrians to complete the operation of going down the stairs. And the limit plate tilting movement control mechanism is set, so that the limit plate can tilt downward and make the corresponding limit rod disengage from the clamping limit opening, so that the corresponding lower pedal moves upward and resets. It is more convenient to use. In the above structure, both the descending step structure and the ascending step structure can be better suitable for the elderly, can complete buffering and power assistance, and also reduce the height of the stairs for going up and down stairs, so as to be better suitable for the elderly. The above structure has a simple structure, can provide targeted power assistance and buffering for going up and down stairs, and has a better power assistance and buffering effect.

[0056] In this specific embodiment, the upper pedal 4 and the lower pedal 6 are both rectangular plate structures, and the length directions of the upper pedal and the lower pedal are arranged along the length direction of the corresponding support surface, and the opposite ends of the upper pedal and the lower pedal above the same support surface are arranged at intervals.

[0057] In this way, the structure is simpler and the layout is more reasonable.

[0058] In this specific embodiment, the first spring structure includes first backing plates 11 respectively and adhesively connected to the support surface and the lower surface of the upper pedal. At the four corner positions of the opposite surfaces of the two first backing plates, a first lower flange 12 and a first upper flange 13 are respectively connected; the middle parts of the first lower flange and the first upper flange respectively protrude inwards to form a first lower docking cylinder 14 and a first upper docking cylinder 15. A vertically arranged first docking rod 16 is provided between the first lower docking cylinder and the first upper docking cylinder. A vertical first docking pipe 17 is provided in the first lower docking cylinder. Both ends of the first docking rod can be slidably inserted into the first docking pipe and the first upper docking cylinder, and a first helical spring 18 is sleeved on the first docking rod. The lower end of the first helical spring can abut and support on the upper end surface of the first docking pipe, and the upper end of the first helical spring can extend into and abut against the bottom of the first upper docking cylinder; and it makes the first lower flange and the first upper flange have a tendency to move away from each other.

[0059] In this way, the design of the first spring structure is more reasonable, which can make the buffering and boosting of the upper pedal more uniform. After the upper pedal is stressed, it can be more stable, and after the gravity is removed, it can move upward better to complete the boosting.

[0060] In this specific embodiment, the second spring mechanism includes second backing plates 19 respectively and adhesively connected to the support surface and the lower surface of the lower pedal. At the four corner positions of the opposite surfaces of the two second backing plates, a second lower flange 20 and a second upper flange 21 are respectively connected; the middle parts of the second lower flange and the second upper flange respectively protrude inwards to form a second lower docking cylinder and a second upper docking cylinder. A vertically arranged second docking rod is provided between the second lower docking cylinder and the second upper docking cylinder. A vertical second docking pipe is provided in the second lower docking cylinder. Both ends of the second docking rod can be slidably inserted into the second docking pipe and the second upper docking cylinder, and a second helical spring is sleeved on the second docking rod. The lower end of the second helical spring can abut and support on the upper end surface of the second docking pipe, and the upper end of the second helical spring can extend into and abut against the bottom of the second upper docking cylinder; and it makes the second lower flange and the second upper flange have a tendency to move away from each other.

[0061] In this way, the design of the second spring mechanism is more reasonable. After the lower pedal is stressed, it can complete buffering better.

[0062] In this specific embodiment, the first backing plate and the first lower flange, the first backing plate and the first upper flange, the second backing plate and the second lower flange, and the second backing plate and the second upper flange are all fixedly connected together by screws.

[0063] In this way, the structure is simpler and it is more convenient for disassembly, assembly and replacement.

[0064] In this specific embodiment, the pull rod structure includes an upper connecting block 22 which is connected to the front side of the lower surface of the upper pedal and is arranged horizontally along the upper pedal. The end face of the upper connecting block extends to the outside of the front side of the upper pedal. A pull rod 23 which is vertically downwardly arranged is connected to the upper connecting block. The lower end of the pull rod passes through a clearance opening provided on an upper pedal below, and a lower connecting block 24 is provided on the rear side of the lower surface of the lower pedal corresponding to the clearance opening. The lower end of the pull rod passes through a vertical hole provided on the lower connecting block, and a limiting nut 25 is provided at the lower end of the pull rod and spaced from the lower surface of the lower connecting block.

[0065] In this way, the pull rod structure design is simpler, and the position of the limit nut on the pull rod can be adjusted more conveniently to change the magnitude of the pulling force on the upper pedal, thereby achieving the purpose of adjusting the buffering effect.

[0066] In this specific implementation manner, the number of the upper connecting blocks is two and they are spaced apart from each other along the longitudinal direction of the upper pedal.

[0067] In this way, the design is more reasonable and the force is more uniform.

[0068] In this specific embodiment, a threaded connection hole is provided on the upper connection block, and the upper end of the pull rod is threadedly connected in the threaded connection hole. A locking nut 26 is also provided at the upper end of the pull rod, and the locking nut is supported on the upper connection block.

[0069] In this way, it is more convenient to connect and fix the upper connecting block and the pull rod, and it is convenient to disassemble, assemble and replace.

[0070] In this specific embodiment, a U-shaped notch is provided on the limit plate corresponding to the limit rod, and the upper end of the front side surface of the U-shaped notch extends as a whole toward the middle position of the U-shaped notch to form a protrusion 27 so that the U-shaped notch and the protrusion as a whole form the said snap-on limit opening; and the far side surface of the protrusion is a matching inclined surface with the lower end inclined inward and used for sliding cooperation with the limit rod.

[0071] In this way, after the lower pedal compresses the second spring structure, the limiting rod can slide better and hook into the clamping limiting opening to overcome the elastic force of the second spring mechanism to limit the lower pedal from moving upward.

[0072] In this specific embodiment, the bottom support structure includes a bottom support plate 28, which is continuously bent upward and horizontally to form staggered and interconnected horizontal and vertical sections, so that the support plate is arranged in a stepped structure as a whole; and the long horizontal surface on the upper side of the horizontal section forms the support surface; and baffles 29 that are overall right-angled trapezoidal structures and are vertically arranged are also connected on both sides of the support plate.

[0073] In this way, the bottom support structure is simpler and the design is more reasonable, so that the whole device can be better modularized and more convenient to install and use.

[0074] In this specific embodiment, a vertically arranged fixing block 30 is connected below the lower pedal. A horizontal fixing hole is provided on the fixing block, and the end of the limiting rod is inserted and connected in the fixing hole.

[0075] In this way, it is more convenient to connect and fix the limiting rod to the lower pedal.

[0076] In this specific embodiment, the limiting plate tilting movement control mechanism includes a limiting plate tilting movement guiding structure; it also includes a limiting plate tilting movement driving structure arranged at the upper end of the limiting plate and a limiting plate tilting movement resetting structure arranged at the front end of the limiting plate.

[0077] In this way, the design of the limiting plate tilting movement control mechanism is more reasonable and more convenient to operate and use.

[0078] In this specific embodiment, the limiting plate tilting movement guiding structure includes a guiding groove arranged at the corner position of the horizontal section and the vertical section on the support plate, and the lower side of the limiting plate is slidably matched and arranged in the guiding groove.

[0079] In this way, the design of the limiting plate tilting movement guiding structure is simpler.

[0080] In this specific embodiment, the end face of the lower end of the limiting plate is a vertical abutting end face; the limiting plate tilting movement resetting structure includes a reset rod 31 which is horizontally and outwardly arranged and connected to the abutting end face. On the support plate and horizontally spaced from the abutting end face, there is an abutting plate 32. The outer end of the reset rod correspondingly passes through a yielding hole provided on the abutting plate, and a reset spring 33 is sleeved on the reset rod. Both ends of the reset spring respectively abut and support on the abutting end face and the abutting plate to push the limiting plate to have a tendency of tilting upward.

[0081] In this way, the limiting plate tilting movement resetting structure is simpler and can better push the limiting plate to reset.

[0082] In this specific embodiment, the reset rods are two vertically arranged at intervals.

[0083] In this way, the force applied to the limiting plate is more stable and the design is more reasonable.

[0084] In this specific embodiment, a fixing block 34 is arranged on the support plate at intervals in front of the abutting plate. On the side of the limiting plate opposite to the baffle, it is bent and extended to form a sliding plate 35 parallel to the baffle. A horizontal guide rail strip protrudes from the sliding plate and is slidably matched with the guiding groove on the baffle. A horizontal threaded hole is provided on the fixing block, and a contact rod 36 is arranged in the threaded hole. The front end of the contact rod abuts and supports on the limiting plate to limit its position.

[0085] In this way, the reset force applied to the limit plate can be adjusted, and the adjustment structure design is simple, which is more convenient for operation.

[0086] In this specific embodiment, the limit plate tilting movement driving structure includes a guide bar 37 connected and fixed to the uppermost vertical section on the support plate. The guide bar is arranged vertically. There are two pairs of guide bars, and each pair is located on both sides of the upper end of the limit plate respectively. A vertically arranged driving bar 38 with a long strip structure is arranged between the guide bars. End cover blocks 39 are provided at the upper ends of the two guide bars. A part of the upper end of the driving bar extends upward to form an operating rod 40 and passes through the through hole on the end cover block. The upper end surface of the limit plate is a vertical mounting surface. A pulley 41 is vertically rotatably mounted on the mounting surface through a bracket. A driving inclined surface 42 is provided on one side of the driving bar corresponding to the limit plate. The driving inclined surface is arranged corresponding to the pulley, and the upper end of the driving inclined surface is inclined towards the mounting surface. And a vertical thrust spring 43 is provided at the lower end of the driving bar. When the operating rod is pushed vertically downward to make the driving bar move downward against the elastic force of the thrust spring, the driving inclined surface is in rolling cooperation with the pulley and can push the limit plate to move downward obliquely.

[0087] In this way, the design of the limit plate tilting movement driving structure is simple. A vertical force is converted into a force to push the limit plate to tilt downward through the cooperation of the inclined surface and the pulley. The design is simple and convenient to use.

[0088] In this specific embodiment, a driving pedal 44 is further provided above the operating rod to drive the operating rod to move downward and make the driving bar below the operating rod move vertically downward.

[0089] In this way, it is more convenient to drive the operating rod by stepping on the pedal.

[0090] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. An up-and-down staircase assistance and buffer auxiliary staircase device, characterized in that It includes a bottom support structure, with a downward step structure and an upward step structure respectively arranged on the left and right sides of the bottom support structure; the bottom support structure has several horizontal strip-shaped structures and a support surface arranged in a stepped structure as a whole; the upward step structure includes upper pedals respectively arranged above the support surface, and the upper surface of the upper pedal is in the same horizontal direction as the previous support surface; a first spring structure is arranged between the upper pedal and the support surface; a pull rod structure is arranged between adjacent upper pedals, and after the upper pedal is stressed and compresses the corresponding first spring structure to a certain amount, the pull rod structure can apply a downward pulling force to the upper pedal above to cause the upper pedal to compress the first spring structure below it and move downward; the downward step structure includes lower pedals respectively arranged above the support surface, and the upper surface of the lower pedal is in the same horizontal direction as the previous support surface; a second spring structure is arranged between the lower pedal and the support surface; a horizontally outward limiting rod is arranged below the lower pedal, and a strip-shaped and inclined limiting plate is arranged outside the lower pedal, and a clamping limiting port corresponding to the limiting rod is arranged on the limiting plate, so that after the lower pedal is stressed and compresses the corresponding second spring mechanism to a certain amount, the limiting rod corresponding to the lower pedal can be correspondingly hooked in the clamping limiting port to overcome the elastic force of the second spring mechanism to limit the upward movement of the lower pedal; and a limiting plate tilting movement control mechanism is arranged between the limiting plate and the bottom support structure, and the limiting plate tilting movement control mechanism includes a limiting plate tilting movement guiding structure; it also includes a limiting plate tilting movement driving structure arranged at the upper end of the limiting plate and a limiting plate tilting movement resetting structure arranged at the front end of the limiting plate, so that the limiting plate can tilt downward and the corresponding limiting rod can be disengaged from the clamping limiting port, so that the corresponding lower pedal moves upward and resets.

2. The up-and-down staircase assistance and buffer auxiliary staircase device according to claim 1, characterized in that: The upper pedal and the lower pedal are both rectangular plate structures, and the length directions of the upper pedal and the lower pedal are both arranged along the length direction of the corresponding support surface, and the opposite ends of the upper pedal and the lower pedal above the same support surface are arranged at intervals.

3. The up-and-down staircase assistance and buffering auxiliary staircase device according to claim 1, characterized in that: The first spring structure includes first pads respectively attached and connected to the support surface and the lower surface of the upper pedal, and a first lower flange and a first upper flange are respectively connected at the four corner positions of the opposite surfaces of the two first pads; the middle parts of the first lower flange and the first upper flange respectively protrude inward to form a first lower docking cylinder and a first upper docking cylinder, a vertical first docking rod is arranged between the first lower docking cylinder and the first upper docking cylinder, a vertical first docking pipe is arranged in the first lower docking cylinder, both ends of the first docking rod can be slidably inserted into the first docking pipe and the first upper docking cylinder, and a first spiral spring is sleeved on the first docking rod, the lower end of the first spiral spring can abut and support on the upper end surface of the first docking pipe, and the upper end of the first spiral spring can extend into and abut against the bottom of the first upper docking cylinder; and the first lower flange and the first upper flange have a tendency to move away from each other.

4. The up-and-down stair assistance and buffer-assisted stair device according to claim 3, characterized in that: The second spring mechanism includes second backing plates respectively and adhesively connected to the support surface and the lower surface of the lower pedal. Second lower flanges and second upper flanges are respectively connected to the four corner positions of the opposite surfaces of the two second backing plates; a second lower docking cylinder and a second upper docking cylinder respectively protrude inwardly from the middle parts of the second lower flange and the second upper flange. A vertically arranged second docking rod is provided between the second lower docking cylinder and the second upper docking cylinder. A vertical second docking pipe is provided in the second lower docking cylinder. The two ends of the second docking rod are respectively slidably inserted into the second docking pipe and the second upper docking cylinder. And a second helical spring is sleeved on the second docking rod. The lower end of the second helical spring can abut and support on the upper end surface of the second docking pipe, and the upper end of the second helical spring can extend into and abut against the bottom of the second upper docking cylinder; and it makes the second lower flange and the second upper flange have a tendency to move away from each other.

5. The up-and-down staircase assistance and buffer auxiliary staircase device according to claim 4, characterized in that: The first backing plate and the first lower flange, the first backing plate and the first upper flange, the second backing plate and the second lower flange, and the second backing plate and the second upper flange are all fixedly connected together by screws.

6. The up-and-down staircase assistance and buffer auxiliary staircase device according to claim 1, wherein: The pull rod structure includes an upper connection block connected to the front side of the lower surface of the upper pedal and arranged transversely along the upper pedal. The end face of the upper connection block extends to the outside of the front side of the upper pedal. A vertically downward pull rod is connected to the upper connection block. The lower end of the pull rod correspondingly passes through a relief opening provided in a lower upper pedal below. And a lower connection block is provided on the rear side of the lower surface of the lower pedal and corresponding to the relief opening. The lower end of the pull rod correspondingly passes through a vertical hole provided in the lower connection block. And a limit nut is provided at the lower end of the pull rod and spaced from the lower surface of the lower connection block.

7. The up-and-down staircase assistance and buffer-assisted staircase device according to claim 6, characterized in that: There are two upper connection blocks arranged at intervals in the longitudinal direction of the upper pedal.

8. The up-and-down staircase assistance and buffering auxiliary staircase device according to claim 6, characterized in that: The upper connection block is provided with a threaded connection hole. The upper end of the pull rod is threadedly connected in the threaded connection hole. And a locking nut is further provided at the upper end of the pull rod. The locking nut abuts and supports on the upper connection block.

9. The up-and-down stair assistance and buffer assisted stair device according to claim 1, wherein: The limiting plate is provided with a U-shaped notch corresponding to the limiting rod. The upper end of the front side of the U-shaped notch extends integrally towards the middle position of the U-shaped notch to form a convex block so that the U-shaped notch and the convex block integrally form the clamping and limiting port; and the far side of the convex block is provided with a mating inclined surface with the lower end inclined inwards for sliding cooperation with the limiting rod.

10. The up-and-down stair assistance and buffer assisted stair device according to claim 1, characterized in that: The bottom support structure includes a bottom support plate. The support plate is continuously bent upwards and horizontally to respectively form staggered and interconnected horizontal sections and vertical sections, and makes the support plate as a whole be arranged in a stepped structure; and the long strip-shaped horizontal surface on the upper side of the horizontal section forms the support surface; and baffles integrally in a right trapezoidal structure and vertically arranged are also connected and provided on both sides of the support plate.

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