A flat-step staircase device

Abstract

The present invention provides a flat-step staircase device, which relates to the technical field of staircase devices. It includes a plurality of pedal bodies that can be adaptively attached to external steps at all levels, a cam mechanism for driving the lifting and moving of each of the pedal bodies, and a driving mechanism for rotating the cam mechanism. Through the rotation of the cam mechanism between adjacent pedal bodies, the pedal bodies are correspondingly driven to reciprocate up and down relative to each other, so that two adjacent pedal bodies can move to the same horizontal height, and at least one of the pedal bodies is arranged in a fitting manner with its corresponding step. The present invention does not require the opening of a new installation space and can operate by installing this device on the original staircase. Moreover, this device has a simple structure, low installation cost, is easy to maintain, and can meet the simultaneous use of multiple people, thus solving the problems of difficulty in going up high-rise buildings without an elevator and inconvenience for the elderly to go up and down the stairs.

Description

Technical Field

[0001] The present invention relates to the technical field of staircase devices, and more particularly, to a flat-step staircase device. Background Art

[0002] With the development of the times, devices such as elevators that facilitate going up and down stairs can be seen everywhere. It has to be said that the existence of elevators has facilitated people's lives, and their existence is particularly important when people go up and down high-rise buildings or carry things. However, some old high-rise buildings do not have space to install elevators. There are also some users who are affected by elevator safety accidents and worry about potential safety hazards due to inadequate elevator maintenance. In addition, some families cannot afford the cost of installing elevators, so there are many buildings that still rely on stairs to go up and down.

[0003] For most people, climbing two or three floors of stairs is acceptable. However, when climbing to high floors, especially when carrying a load, there are quite a few people who become physically exhausted and unwell. For young people, going up and down stairs is not difficult, but for the elderly, it is as difficult as ascending to heaven. As is well known, leg pain and difficulty in bending the knees are common problems among the elderly. At present, the devices for assisting the elderly in going up and down stairs are not perfect. Most of the current assisting devices are to add a pushable handrail on one side of the wall. When the elderly go up and down stairs, they use their legs and arms simultaneously to reduce the burden on their legs. However, this kind of device does not solve the fundamental problem. Summary of the Invention

[0004] The present invention discloses a flat-step staircase device, aiming to improve the problems such as the difficulty of going up high-rise buildings without elevators and the inconvenience of the elderly going up and down stairs.

[0005] The present invention adopts the following solutions:

[0006] A flat-step staircase device includes a plurality of pedal bodies that can be adaptively attached to external steps at all levels, a cam mechanism that drives the lifting and moving of each of the pedal bodies, and a driving mechanism that rotates the cam mechanism; through the rotation of the cam mechanism, the pedal bodies reciprocate relative to each other in a lifting and moving manner, and two adjacent pedal bodies can move to the same horizontal height, and at this time, at least one of the pedal bodies is arranged in contact with its corresponding step.

[0007] As a further improvement, each of the pedal bodies includes a horizontal portion and at least one vertical portion; the horizontal portion is used to support a user and can be placed in contact with an external step; the vertical portion abuts against the cam mechanism, and the vertical portion is driven to move up and down through the rotation of the cam mechanism.

[0008] As a further improvement, the vertical portion of the pedal body is disposed on one side of the horizontal portion; the stair device further includes at least one support frame body disposed on one side wall of the external stair, and the support frame body is arranged in a shape similar to that of the wall; the pedal body is arranged on the support frame body at intervals in a vertically liftable and slidable manner along the layout direction of each external stair, and the horizontal portion is disposed substantially perpendicular to one side of the support frame body; the driving mechanism and the cam mechanism are both disposed in the support frame body.

[0009] As a further improvement, the support frame body includes an installation area disposed on one side of the stair landing and a working area connecting the installation area and arranged along the layout direction of the external stair.

[0010] As a further improvement, the driving mechanism is connected to the cam mechanism via a reduction gear set. The driving mechanism includes a motor, and the output shaft of the motor meshes with the reduction gear set; the driving mechanism and the reduction gear set are both located in the installation area, and the pedal body and the cam mechanism are both located in the working area.

[0011] As a further improvement, at least one half-tooth gear is provided in the reduction gear set to correspondingly control a transmission neutral gear when the motor drives the cam mechanism, so that the cam mechanism stops rotating within this transmission neutral gear.

[0012] As a further improvement, a cam mechanism is correspondingly configured for each pedal body, and adjacent cam mechanisms are synchronously connected to each other through transmission parts, and the cam mechanism close to the reduction gear set is connected to the last-stage gear of the reduction gear set.

[0013] As a further improvement, each cam mechanism includes a driving wheel and a cam that rotates synchronously with the driving wheel; the driving wheels are synchronously driven and connected to each other and are arranged in a straight line along the layout direction of the external stair; the driving wheel and the cam are in one-to-one correspondence and are disposed on one side of the support frame body, and each cam abuts and supports the corresponding vertical portion to drive the pedal body to move up and down; wherein, the sizes of the cams are the same.

[0014] As a further improvement, two adjacent cams rotate synchronously to drive the pedal body to move up and down, so that the horizontal portions of two adjacent pedal bodies are leveled. One of the pedal bodies is at the highest position as the cam rotates, and the other pedal body is at the lowest position as the cam rotates and fits with the stair plane.

[0015] As a further improvement, hydraulic rods are included between the side wall and the support frame body and are disposed at the front and rear ends of the support frame body. The hydraulic rods can perform telescopic movement to support the up and down movement of the support frame body.

[0016] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0017] The flat-step staircase device provided by the present invention drives the pedal body to lift and reciprocate through a driving mechanism, so that adjacent pedal bodies can be level at the same horizontal height under the drive of a cam, and at least one pedal body is attached to an external staircase. When a user goes up or down the stairs, the user first steps on the pedal body that fits the ground, rises or falls with this pedal body to a position level with an adjacent pedal body, then the user steps onto this adjacent pedal body, and then rises or falls with this adjacent pedal body to the position of the next pedal body that is level with it. Repeating this process enables the user to go up and down the stairs without having to lift their legs as when going up and down a regular staircase, but simply by walking on flat ground. Moreover, the present invention does not require a new installation space and can operate by installing this device on an existing staircase. Additionally, this device has a simple structure, low installation cost, is easy to maintain, and can meet the simultaneous use of multiple people, thus solving the problems of difficulty in going up high buildings without an elevator and inconvenience for the elderly in going up and down the stairs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can be obtained based on these drawings.

[0019] Figure 1 is the front view of the structure of the flat-step staircase device according to the embodiment of the present invention;

[0020] Figure 2 is Figure 1 the rear view of the structure of the flat-step staircase device in

[0021] Figure 3 is Figure 1 the schematic diagram of another perspective structure of the flat-step staircase device in

[0022] Figure 4 is Figure 1 the schematic diagram of the flat-step staircase device when a user goes upstairs in

[0023] Figure 5 is Figure 1 the schematic diagram of the flat-step staircase device when a user goes downstairs in

[0024] Icons: 1 - Ladder step, 2 - Pedal body; 21 - Horizontal part; 22 - Vertical part; 23 - Roller; 3 - Cam mechanism; 31 - Top wheel; 32 - Cam; 4 - Driving mechanism; 41 - Motor; 5 - Wall; 6 - Support frame: 61 - Installation area; 62 - Working area; 621 - Sliding groove; 622 - Guide groove; 7 - Reduction gear set; 71 - Half - tooth gear; 8 - Transmission part; 81 - Pulley; 82 - Belt; 9 - Hydraulic rod; 10 - Protection plate; 11 - Handrail. Detailed implementation mode

[0025] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the present invention to be protected, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0027] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0028] In the present invention, unless otherwise clearly specified or defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present invention, unless otherwise clearly specified or defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0030] Embodiment

[0031] Combined Figures 1 to 5 , this embodiment provides a flat-step stair device, including a plurality of pedal bodies 2 that can be adaptively attached to external steps 1 at all levels, a cam mechanism 3 that drives the lifting and moving of each pedal body 2, and a driving mechanism 4 that rotates the cam mechanism 3; through the rotation of the cam mechanism 3, the pedal bodies 2 reciprocate relative to each other in a lifting and lowering manner, and two adjacent pedal bodies 2 can move to the same horizontal height, at which time at least one of the pedal bodies 2 is arranged in contact with its corresponding step 1. It should be noted that the operation of the driving mechanism 4 is controlled by a switch (not shown in the figure). The switch can be arranged on the side close to the user and is manually turned on by the user, or an induction switch is set at the pedal body 2, etc. The structure of the switch controlling the driving mechanism 4 is prior art and will not be elaborated here.

[0032] The flat-step staircase device provided by the present invention enables the cam mechanism 3 to drive the pedal body 2 to reciprocate up and down through the drive mechanism 4. Adjacent pedal bodies 2 can be leveled at the same horizontal height driven by the cam 32, and at least one pedal body 2 is in contact with the external staircase 1. This allows users going up and down the stairs to first step onto the pedal body 2 in contact with the ground, rise or fall with this pedal body 2 to a position level with the adjacent pedal body 2, then step onto the adjacent pedal body 2, and then rise or fall with this adjacent pedal body 2 to the position of the next pedal body 2 that is level with it. Repeating this process enables users to go up and down the stairs without having to lift their legs as they do when going up and down regular stairs, but simply as if walking on flat ground. Moreover, the present invention does not require the creation of new installation space and can operate by installing this device on the original staircase. Additionally, this device has a simple structure, low installation cost, is easy to maintain, and can accommodate multiple people using it simultaneously, thus solving the problems of difficulty in going up high-rise buildings without an elevator and inconvenience for the elderly in going up and down the stairs.

[0033] Further, each pedal body 2 includes a horizontal portion 21 and at least one vertical portion 22. The horizontal portion 21 is used to support the user and can be placed in contact with the external staircase 1. The vertical portion 22 is in contact with the cam mechanism 3, and the rotation of the cam mechanism 3 drives the vertical portion 22 to move up and down. In particular, the vertical portion 22 is in the shape of a rectangular frame. In the middle of the upper frame of this rectangular frame, a top wheel 31 is arranged, and the top wheel 31 is in contact with the cam mechanism 3. The rotation of the cam mechanism 3 drives the top wheel 31 to move up and down, correspondingly causing the pedal body 2 to rise and fall.

[0034] In this embodiment, the pedal body 2 is generally in an L shape, and only one vertical portion 22 is provided on one side of the horizontal portion 21. The staircase device further includes at least one support frame 6 arranged on one side wall 5 of the external staircase 1, and the support frame 6 is arranged in a shape similar to that of the wall 5. The pedal bodies 2 are arranged at intervals along the layout direction of each external staircase 1 through the vertical portions 22 so as to be able to rise and fall and slide, and the horizontal portions 21 are arranged substantially perpendicular to one side of the support frame 6. The drive mechanism 4 and the cam mechanism 3 are both arranged in the support frame 6, which is convenient for the assembly, application, and disassembly of this staircase device. Specifically, in this embodiment, only one support frame 6 is provided on one side of the external staircase 1. The support frame 6 is provided with a sliding groove 621 and a guiding groove 622. The vertical portion 22 of the pedal body 2 is sleeved in the sliding groove 621 and can move up and down along the sliding groove 621. The top part arranged on the vertical portion 22 is accommodated in the guiding groove 622 to support the pedal body 2 to move linearly back and forth along the guiding groove 622. Further, at the end of the vertical portion 22 close to the support frame 6, rollers are symmetrically arranged on both sides of the rectangular frame body. The rollers are in contact with the outer wall of the support frame 6 and can roll along its outer wall. The arrangement of the rollers is beneficial to improving the stability of the lifting of the pedal body 2, and can reduce the friction between the pedal body during lifting and moving relative to the support frame 6, so that the pedal body can lift smoothly.

[0035] It should be noted that in other embodiments, support frames 6 are arranged on both side walls of the external step 1, and there are two vertical portions 22 of the pedal body 2, which are respectively located on the left and right sides of the horizontal portion 21, and are slidably and liftably arranged corresponding to the respective support frames 6, and the horizontal portion 21 is placed between the two support frames 6 to ensure stable support during use.

[0036] In this embodiment, the support frame 6 includes an installation area 61 arranged on one side of the stair landing and a working area 62 connected to the installation area 61 and arranged along the layout direction of the external step 1. It should be noted that the driving mechanism 4 is connected to the cam mechanism 3 via a reduction gear set 7. The driving mechanism 4 includes a motor 41, and the output shaft of the motor 41 is engaged with the reduction gear set 7. The driving mechanism 4 and the reduction gear set 7 are both located in the installation area 61, and the pedal body 2 and the cam mechanism 3 are both located in the working area 62.

[0037] Preferably, at least one half-tooth gear 71 is provided in the reduction gear set 7 to correspond to a transmission neutral gear when the motor 41 is transmitted to the cam mechanism 3, so that the cam mechanism 3 stops rotating within this transmission neutral gear. When the cam 32 stops moving, two adjacent pedal bodies 2 are at the same height and level, and at least one pedal body 2 is in contact with the external step 1. Users can step onto the next pedal body 2 during this stop rotation neutral gear period, and so on, and users can go up and down the stairs calmly.

[0038] Specifically, in this embodiment, each pedal body 2 is correspondingly provided with a cam mechanism 3, and the adjacent cam mechanisms 3 are synchronously connected to each other through a transmission member 8, and the cam mechanism 3 close to the reduction gear set 7 is connected to the last-stage gear of the reduction gear set 7. A pulley 81 connected to the last-stage reduction gear is provided on one side of the support frame 6 close to the wall 5, and the reduction gear set 7 makes the angular velocity finally transmitted to the pulley 81 meet the requirements of the movement of the cam mechanism 3.

[0039] In this embodiment, the cam mechanism 3 includes a driving wheel and a cam 32 that rotates synchronously with the driving wheel; the driving wheels are connected in synchronous transmission with each other, and are arranged in a straight line along the layout direction of the external staircase 1 and correspond to the cams 32 one by one, and are arranged on one side of the support frame 6. Each cam 32 abuts against and supports the corresponding vertical portion 22 to drive the pedal body 2 to move up and down; wherein, the sizes of the cams 32 are the same, so as to ensure that during the synchronous rotation of the cams 32, two adjacent pedal bodies 2 can be driven by their respective cams 32 to move to the same horizontal height and be placed flat corresponding to the pedal body 2 at the highest position and the pedal body 2 at the lowest position. Among them, the driving wheel is a pulley 81 of the same specification connected to the reduction gear, and is arranged on one side of the support frame 6 close to the wall 5. The cam 32 is arranged on the other side relative to the driving wheel and is connected to the driving wheel through a transmission member 8 to rotate with the pulley 81. The driving wheels corresponding to the cams 32 one by one are arranged in a straight line along the layout direction of the external staircase 1 and are connected by a belt 82 to make the pulleys 81 rotate synchronously. The pulley 81 connected to the reduction gear and the pulley 81 closest to the cam 32 are also synchronously connected by the belt 82. It should be noted that the transmission connection between the pulley 81 and the driving wheel is not limited thereto. In other embodiments, it can also be through a chain and a sprocket, or a gear and a rack, etc. transmission methods, all of which fall within the protection scope of this solution.

[0040] In this embodiment, two adjacent cams 32 rotate synchronously to drive the pedal body 2 to move up and down, so that the horizontal portions 21 of two adjacent pedal bodies 2 are level. And the abutting positions of the maximum and minimum values of the two adjacent cams 32 when abutting against and supporting the lifting of their respective pedal bodies 2 are exactly opposite, so that one pedal body 2 is at the highest position moving with the cam 32, and the other pedal body 2 is at the lowest position moving with the cam 32 and is in contact with the plane of the staircase 1.

[0041] Among them, hydraulic rods 9 are arranged between the wall 5 and the support frame 6 and at the front and rear ends of the support frame 6. The hydraulic rods 9 can support the support frame 6 to move up and down to correspondingly lift each pedal body 2 away from its respective staircase 1, so as to facilitate the cleaning of the staircase device and the external staircase. In particular, a protection plate 10 is provided on the support frame 6, and it encloses a protective space along the outer walls of the support frame 6 and the wall 5 to improve the safety of the device during use. Further, a handrail 11 is provided on the side of the protection plate 10 close to the user along the layout direction of the external staircase 1. On the one hand, it can assist the user in bearing force, and on the other hand, it can ensure the balance of the user when using the flat-step staircase device.

[0042] The working mode of the staircase device in this embodiment is as follows:

[0043] Combined again with Figure 4, when the user is going upstairs, they step horizontally onto the pedal body 2 that fits the ground. The device is started via a switch. When the user starts to rise with the stepped-on pedal body 2 (the first step), the adjacent pedal body 2 (the second step) is in a descending state. When the pedal body 2 (the first step) rises to a position level with the adjacent pedal body 2 (the second step), the two pedal bodies 2 stop rising or descending, and the adjacent pedal body 2 (the second step) fits the step 1. The user steps horizontally onto the adjacent pedal body 2 (the second step), thus ascending one step 1. After the intermittent neutral gear ends, the user continues to rise with the adjacent pedal body 2 (the second step). When it is level with the next adjacent pedal body 2 (the third step), the user steps onto the next pedal body 2 (the third step) again. Repeating this process, the user can achieve the purpose of going upstairs as if walking on flat ground.

[0044] Refer again to Figure 5 , when the user is going downstairs, they step horizontally onto the pedal body 2 (the last but one step) that is level with the ground. The device is started via a switch. When the user starts to descend with the stepped-on pedal body 2 (the last but one step), the adjacent pedal body 2 (the second last step) is in an ascending state. When the pedal body 2 (the last but one step) descends to a position level with the adjacent pedal body 2 (the second last step), the two pedal bodies 2 stop descending or ascending, and the pedal body 2 (the last but one step) where the user is located fits the step. The user steps horizontally onto the adjacent pedal body (the second last step), thus descending one step. After the intermittent neutral gear ends, the user continues to descend with the adjacent pedal body 2 (the second last step). When it is level with the next adjacent pedal body 2 (the third last step), the user steps onto the next pedal body 2 (the third last step) again. Repeating this process, the user can achieve the purpose of going downstairs as if walking on flat ground.

[0045] The above is only the preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention.

Claims

1. A flat-step stair device, characterized in that, it includes: a plurality of pedal bodies that can be adaptively attached to external steps at all levels, a cam mechanism for driving the lifting and moving of each of the pedal bodies, and a driving mechanism for rotating the cam mechanism; through the rotation of the cam mechanism, the pedal bodies reciprocate relative to each other in a lifting motion, and two adjacent pedal bodies can move to the same horizontal height. At this time, at least one of the pedal bodies is attached to its corresponding step; each of the pedal bodies includes a horizontal portion and at least one vertical portion; the horizontal portion is used to support the user and can be placed in contact with the external step; the vertical portion abuts against the cam mechanism and is driven to move up and down through the rotation of the cam mechanism; each of the pedal bodies is correspondingly provided with one of the cam mechanisms, and adjacent cam mechanisms are connected to each other synchronously through transmission members; each of the cam mechanisms includes a driving wheel and a cam that rotates synchronously with the driving wheel; the driving wheels are connected to each other in synchronous transmission and are arranged in a straight line along the direction of the external step layout; the driving wheels and the cams are in one-to-one correspondence, and each cam abuts against and supports the corresponding vertical portion to drive the pedal body to move up and down; among them, the sizes of the cams are the same; two adjacent cams rotate synchronously, driving the pedal bodies to move up and down, so that the horizontal portions of the two adjacent pedal bodies are level. One of the pedal bodies is at the highest position as the cam rotates, and the other pedal body is at the lowest position as the cam rotates and is in contact with the step plane; the vertical portion of the pedal body is arranged on one side of the horizontal portion; the stair device further includes at least one support frame arranged on one side wall of the external step, and the support frame is arranged in a shape similar to the wall; the pedal bodies are arranged at intervals on the support frame in a vertically liftable and slidable manner along the layout direction of each external step through the vertical portions, and the horizontal portions are arranged substantially perpendicular to one side of the support frame; the driving mechanism and the cam mechanism are both arranged in the support frame; the support frame includes an installation area arranged on one side of the stair platform and a working area connecting the installation area and arranged along the layout direction of the external step; it includes hydraulic rods between the side wall and the support frame and arranged at the front and rear ends of the support frame, and the hydraulic rods can perform telescopic movements to support the up and down movement of the support frame.

2. The flat-step stair device according to claim 1, characterized in that, the driving mechanism is connected to the cam mechanism through a reduction gear set, the driving mechanism includes a motor, and the output shaft of the motor meshes with the reduction gear set; the driving mechanism and the reduction gear set are both located in the installation area, and the pedal body and the cam mechanism are both located in the working area.

3. The flat-step stair device according to claim 2, characterized in that, at least one half-tooth gear is provided in the reduction gear set to correspondingly control a transmission neutral gear when the motor drives the cam mechanism, so that the cam mechanism stops rotating within this transmission neutral gear.

4. The flat-step staircase device according to claim 2, characterized in that, the cam mechanism close to the reduction gear set is connected to the last-stage gear of the reduction gear set.

5. The flat-step staircase device according to claim 4, characterized in that, the drive wheels correspond to the cams one by one and are arranged on one side of the support frame.

Images