A combined transmission lifting step that assists in going up and down stairs

Abstract

This utility model discloses a combined transmission lifting step for assisting people to go up and down stairs, including a combined transmission mechanism that can be installed on the stairs and multiple lifting mechanisms. The combined transmission mechanism is equipped with an electric drive device, a controller, and multiple combined transmission devices connected in sequence. The combined transmission device is equipped with a first coupling, which is connected to the lifting mechanisms respectively. When the electric drive device drives the combined transmission device to rotate, the connected lifting mechanisms move up and down in tandem, and the lifting directions of two adjacent lifting mechanisms are opposite. The gravitational potential energy of the descending part of this invention can assist the ascending part, resulting in good energy saving. It can reduce the power required by the equipment and save equipment costs. Equipped with sensors and a controller, it can intelligently control the assistance for people to go up and down stairs or steps, with a high degree of intelligence. It can not only be used on stairs, but also on steps in tourist attractions and parks.

Description

Technical Field

[0001] This utility model relates to the technical field of stair-climbing auxiliary mechanisms, and in particular to a combined transmission lifting step that assists in going up and down stairs. Background Technology

[0002] Buildings of varying heights typically rely on elevators, staircases, or steps for movement between floors. While elevators are convenient and fast, they are prohibited in emergencies such as fires, making staircases or steps indispensable as safe evacuation routes. Especially for older, existing buildings, retrofitting elevators often faces numerous technical and spatial challenges, making implementation extremely difficult. Beyond staircases, steps in tourist attractions and parks also present challenges. Simply walking up and down stairs or steps is essentially using one's own physical strength to overcome gravity, raising and lowering oneself—a very strenuous activity. As living standards improve, people increasingly desire to reduce the physical burden of climbing stairs or steps, achieving easier travel. Therefore, the demand for effort-saving assistive devices for stairs or steps is growing. However, current stair-climbing or step-assistive devices generally lack energy-saving functions, exhibiting disadvantages such as high energy consumption and low levels of intelligence, making it difficult to meet practical application needs.

[0003] This utility model is based on the above-mentioned circumstances. Utility Model Content

[0004] This invention overcomes the shortcomings of the prior art and provides a combined transmission lifting step that helps people go up and down stairs. It not only makes it easier for people to go up and down stairs or steps, but also drives the entire row of lifting mechanisms with just one motor, resulting in good energy saving and a high degree of intelligence.

[0005] This utility model is achieved through the following technical solution:

[0006] A combined transmission lifting step for assisting in going up and down stairs includes a combined transmission mechanism that can be installed on the stairs and multiple lifting mechanisms. The combined transmission mechanism is equipped with an electric drive device, a controller, and multiple combined transmission devices connected in sequence. The combined transmission device is equipped with a first coupling, which is connected to the lifting mechanisms respectively. When the electric drive device drives the combined transmission device to rotate, the connected lifting mechanisms move up and down in tandem, and the lifting directions of two adjacent lifting mechanisms are opposite.

[0007] The lifting mechanism includes an upper frame and a lower frame. A lifting support group is provided between the upper frame and the lower frame, which can drive the upper frame to rise and fall. The lifting support group includes a lifting support and a linkage mechanism that drives the lifting support to rise and fall. The linkage mechanism is provided with a transmission connection port, which is connected to the first coupling corresponding to each combined transmission device.

[0008] As described above, a combined transmission lifting step for assisting in going up and down stairs includes a first chain, on which multiple first sprockets are sequentially or in the same direction, and each first sprocket is connected to a lifting mechanism via a first coupling; when multiple first sprockets are sequentially or in the same direction, the rotation directions of two adjacent first sprockets are opposite; when multiple first sprockets are sequentially or in the same direction, the rotation directions of two adjacent first sprockets are the same.

[0009] As described above, a combined transmission lifting step for assisting in going up and down stairs includes a plurality of sequentially axially connected driving bevel gears and driven bevel gears meshing with each driving bevel gear. Each driven bevel gear is connected to a lifting mechanism via a first coupling. Adjacent driving bevel gears are arranged opposite or back to back, so that the rotation directions of adjacent driven bevel gears are opposite; or the rotation directions of adjacent driving bevel gears are the same, and the rotation directions of adjacent driven bevel gears are the same.

[0010] As described above, a combined transmission lifting step for assisting in going up and down stairs includes a plurality of worm gears axially connected in sequence and worm wheels meshing with each worm gear. Each worm wheel is connected to a lifting mechanism through a first coupling. The threads of two adjacent worm gears have opposite directions, so that the adjacent worm wheels rotate in opposite directions; or the threads of two adjacent worm gears have the same direction, so that the adjacent worm wheels rotate in the same direction.

[0011] As described above, a combined transmission lifting step for assisting in going up and down stairs has a pedal on the upper frame, and a first pressure sensor is provided between the upper frame and the pedal or at the bottom of the lower frame. The first pressure sensor is communicatively connected to a controller.

[0012] As described above, a combined transmission lifting step for assisting in going up and down stairs includes an X-shaped support or a herringbone support. The lifting support is provided with a connecting rod that can drive the lifting support to perform shearing and lifting when sliding. The linkage mechanism connects to the connecting rod, thereby driving the connecting rod to slide.

[0013] As described above, in a combined transmission lifting step for assisting in going up and down stairs, the linkage mechanism is either a telescopic rod mechanism or a screw transmission mechanism. When the linkage mechanism is a telescopic rod mechanism, the telescopic end of the telescopic rod mechanism is connected to a connecting rod. When the linkage mechanism is a screw transmission mechanism, the lifting support assembly has two pairs of A-frame supports. The left support rod of the left pair of A-frame supports is connected to a connecting rod, and the connecting rod is provided with a first slider. The right support rod of the right pair of A-frame supports is connected to a connecting rod, and the connecting rod is provided with a second slider. The screw transmission mechanism is provided with a transmission screw with double-helical threads. The first slider and the second slider are threadedly connected to the transmission screw. The rotation of the transmission screw causes the first slider and the second slider to move in opposite directions or in opposite directions, and simultaneously causes the two pairs of A-frame supports to move in opposite directions or in opposite directions from the rotation connection point with the lower frame, thereby causing the upper frame to rise or fall.

[0014] As described above, a combined transmission lifting step for assisting in going up and down stairs includes a linkage mechanism comprising a steering conversion mechanism, a second sprocket, and a second chain. There are two second sprockets; one second sprocket is connected to the rotating shaft of the steering conversion mechanism, and the other second sprocket is rotatably connected to the lower frame. The connecting rod is fixed to the second chain.

[0015] As described above, a combined transmission lifting step for assisting in going up and down stairs includes a linkage mechanism comprising a steering conversion mechanism and a crank-connecting rod mechanism. One end of the crank of the crank-connecting rod mechanism is connected to the rotating shaft of the steering conversion mechanism, and the other end of the crank is connected to the connecting rod via a connecting rod.

[0016] As described above, a combined transmission lifting step for assisting in going up and down stairs further includes a second pressure sensor or human body sensing device located at the high platform stairwell area and the low platform stairwell area of ​​the stairs. The second pressure sensor and human body sensing device are communicatively connected to the controller.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. The gravitational potential energy of the descending part can help the ascending part rise, resulting in good energy-saving effect.

[0019] 2. It can reduce the power required by the equipment and save equipment costs.

[0020] 3. Equipped with sensors and controllers, it can intelligently control and assist people in going up and down stairs or steps, demonstrating a high degree of intelligence.

[0021] 4. It can be used not only for stairs, but also for steps in tourist attractions and parks. Attached Figure Description

[0022] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0023] Figure 1 This is a schematic diagram of the structure of a combined transmission lifting step for assisting in going up and down stairs according to the present invention;

[0024] Figure 2 This is a schematic diagram of the sprocket cross-connection structure of the combined transmission device for the combined transmission lifting step of this utility model;

[0025] Figure 3 This is a schematic diagram of the sprocket connection structure of the combined transmission device for the combined transmission lifting step of this utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the combined transmission device for the lifting step of this utility model, showing the reverse rotation of adjacent bevel gear sets.

[0027] Figure 5 This is a schematic diagram of the structure of the combined transmission device for the lifting step of this utility model, showing the adjacent bevel gear sets rotating in the same direction;

[0028] Figure 6 This is a schematic diagram of the structure of the combined transmission device for the lifting step of this utility model, showing the reverse rotation of adjacent worm gear sets;

[0029] Figure 7 This is a schematic diagram of the structure of the combined transmission device for the lifting step of this utility model, showing the adjacent worm gear sets rotating in the same direction.

[0030] Figure 8 This is a schematic diagram of the lifting mechanism in the combined transmission lifting step of this utility model, representing one embodiment.

[0031] Figure 9 This is a schematic diagram of the lifting mechanism in the combined transmission lifting step of this utility model, according to Embodiment 2.

[0032] Figure 10 This is a schematic diagram of the lifting mechanism in the combined transmission lifting step of this utility model, according to Embodiment 3.

[0033] Figure 11 This is a schematic diagram of the fourth embodiment of the lifting mechanism in the combined transmission lifting step of this utility model;

[0034] Figure 12 This is a schematic diagram of the fifth embodiment of the lifting mechanism in the combined transmission lifting step of this utility model;

[0035] Figure 13 This is a schematic diagram of the transmission screw structure with double helical threads in Embodiment 5 of the lifting mechanism in the combined transmission lifting step of this utility model; Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings:

[0037] Example 1 of a combined transmission lifting staircase for assisting in going up and down stairs:

[0038] like Figure 1 The illustrated combined transmission lifting step for assisting in ascending and descending stairs includes a combined transmission mechanism 1000 that can be installed on one side of a staircase 100 and lifting mechanisms 103 respectively installed on multiple steps of the staircase 100. The combined transmission mechanism 1000 is equipped with an electric drive device 1020 and a combined transmission device 200 and a controller connected in sequence. The combined transmission device 200 is equipped with first couplings, which can be movable rigid couplings or flexible couplings, including double universal couplings or cloverleaf-shaped flexible couplings. The device has multiple first couplings connected to lifting mechanisms 103, and adjacent lifting mechanisms 103 are respectively set in positions where the lifting direction is always opposite. When the electric drive device 1020 drives the combined transmission device 200 to rotate, the connected lifting mechanisms 103 are linked to lift and lower, and the lifting directions of adjacent lifting mechanisms 103 are opposite. That is, when any lifting mechanism 103 rises, the adjacent lifting mechanism 103 falls, and vice versa.

[0039] Because it is a linkage, the lifting and lowering are carried out simultaneously. The potential energy of gravity in the descending part will help the ascending part to rise, thus saving energy and reducing the power required by the electric drive unit 1020.

[0040] The controller inside the combined transmission mechanism 1000 and the first pressure sensor 8 inside each lifting mechanism 103 are connected in communication to form a control system. The combined transmission lifting step also includes a second pressure sensor or human body sensing device located in the low platform stairwell area 1030 and the high platform stairwell area 1038 of the staircase 100. The second pressure sensor and human body sensing device are connected in communication with the control system.

[0041] like Figure 1As shown, taking a 7-step staircase as an example, a combined transmission lifting staircase for assisting in ascending and descending stairs includes a combined transmission mechanism 1000 disposed on one side of the staircase 100 according to the structural dimensions of the staircase 100, and first lifting mechanisms 1031 to seventh lifting mechanisms 1037 respectively disposed on the 7 steps of the staircase 100. The combined transmission mechanism 1000 is equipped with an electric drive device 1020 and a combined transmission device 200 connected in sequence. The combined transmission device 200 is equipped with 7 first couplings, namely first couplings 1011, 1012, 1013, 1014, 1015, 1016, and 1017. The 7 couplings are respectively connected to the corresponding first lifting mechanisms 1031 to seventh lifting mechanisms 1037, and the first lifting mechanism 1031, third lifting mechanism 1033, and fifth lifting mechanism 1035 are also connected. The seventh lifting mechanism 1037 is set at the lowest position, while the second lifting mechanism 1032, the fourth lifting mechanism 1034, and the sixth lifting mechanism 1036 are set at the highest position. When the electric drive device 1020 drives the combined transmission device 200 to rotate, the connected first lifting mechanism 1031 to the seventh lifting mechanism 1037 move up and down in tandem. When the first lifting mechanism 1031, the third lifting mechanism 1033, the fifth lifting mechanism 1035, and the seventh lifting mechanism 1037 rise, the second lifting mechanism 1032, the fourth lifting mechanism 1034, and the sixth lifting mechanism 1036 fall. Conversely, when the first lifting mechanism 1031, the third lifting mechanism 1033, the fifth lifting mechanism 1035, and the seventh lifting mechanism 1037 fall, the second lifting mechanism 1032, the fourth lifting mechanism 1034, and the sixth lifting mechanism 1036 rise.

[0042] The aforementioned human body sensing device can be one or more of the following: infrared sensor, radar sensor, ultrasonic sensor, human body recognition camera module, or other human body sensing devices.

[0043] Example 1 of a combined transmission device in a combined transmission mechanism 1000:

[0044] like Figure 1 , Figure 2The combined transmission device shown includes a first chain 209, which is sequentially and alternately connected to first sprockets 201, 202, 203, 204, 205, 206, and 207. The first sprockets 201, 202, 203, 204, 205, 206, and 207 are respectively connected to first couplings 1011, 1012, 1013, 1014, 1015, 1016, and 1017. When the electric drive device 1020 rotates, the adjacent first sprockets rotate in opposite directions. If the first sprockets 201, 203, 205, and 207 rotate clockwise, then the first sprockets 202, 204, and 206 rotate counterclockwise. Conversely, if the first sprockets 201, 203, 205, and 207 rotate counterclockwise, then the first sprockets 202, 204, and 206 rotate clockwise.

[0045] Embodiment 2 of the combined transmission device in a combined transmission mechanism 1000:

[0046] like Figure 1 , Figure 3 The combined transmission device shown includes a first chain 209, which is sequentially connected to first sprockets 501, 502, 503, 504, 505, 506, and 507 in the same direction. The first sprockets 501, 502, 503, 504, 505, 506, and 507 are respectively connected to first couplings 1011, 1012, 1013, 1014, 1015, 1016, and 1017. When the electric drive device 1020 rotates, the first sprockets 501, 502, 503, 504, 505, 506, and 507 rotate in the same direction.

[0047] Embodiment 3 of the combined transmission device in a combined transmission mechanism 1000:

[0048] like Figure 1 , Figure 4The combined transmission device 200 shown includes sequentially axially connected driving bevel gears 301, 302, 303, 304, 305, 306, and 307. The driven bevel gears of the driving bevel gears 301, 302, 303, 304, 305, 306, and 307 are respectively connected to first couplings 1011, 1012, 1013, 1014, 1015, 1016, and 1017. Adjacent driving bevel gears are arranged opposite or back-to-back. When the combined transmission mechanism 100... When the electric drive device 1020 rotates, the driven bevel gears of each adjacent driving bevel gear rotate in opposite directions. For example, when the driven bevel gears of driving bevel gears 301, 303, 305, and 307 rotate clockwise, the driven bevel gears of driving bevel gears 302, 304, and 306 rotate counterclockwise. Conversely, when the driven bevel gears of driving bevel gears 301, 303, 305, and 307 rotate counterclockwise, the driven bevel gears of driving bevel gears 302, 304, and 306 rotate clockwise.

[0049] Embodiment 4 of a combined transmission device in a combined transmission mechanism 1000:

[0050] like Figure 1 , Figure 5 The combined transmission device 200 shown includes a series of axially connected driving bevel gears 601, 602, 603, 604, 605, 606, and 607. The driven bevel gears of the driving bevel gears 601, 602, 603, 604, 605, 606, and 607 are respectively connected to couplings, namely first couplings 1011, 1012, 1013, 1014, 1015, 1016, and 1017. All driving bevel gears are identical. When the electric drive device 1020 rotates, the rotation direction of all driving bevel gears is the same. When the combined transmission mechanism 1000 electric drive device 1020 rotates, the rotation direction of the driven bevel gears of the driving bevel gears 601, 602, 603, 604, 605, 606, and 607 is the same.

[0051] Embodiment 5 of the combined transmission device in a combined transmission mechanism 1000:

[0052] like Figure 1 , Figure 6The combined transmission device 200 shown includes worm gear transmission mechanisms 401, 402, 403, 404, 405, 406, and 407 connected axially in sequence. The worm gears of the worm gear transmission mechanisms 401, 402, 403, 404, 405, 406, and 407 are respectively connected to first couplings 1011, 1012, 1013, 1014, 1015, 1016, and 1017. The threads of adjacent axially connected worms have opposite directions of rotation. When the electric drive device 1020 of the combined transmission mechanism 1000 rotates, each adjacent worm gear rotates in the opposite direction. For example, when the worm gears of the worm gear transmission mechanisms 401, 403, 405, and 407 rotate clockwise, the worm gears of the worm gear transmission mechanisms 402, 404, and 406 rotate counterclockwise.

[0053] Embodiment 6 of a combined transmission device in a combined transmission mechanism 1000:

[0054] like Figure 1 , Figure 7 The combined transmission device 200 shown includes worm gear transmission mechanisms 701, 702, 703, 704, 705, 706, and 707 connected axially in sequence. The worm wheels of the worm gear transmission mechanisms 701, 702, 703, 704, 705, 706, and 707 are respectively connected to first couplings 1011, 1012, 1013, 1014, 1015, 1016, and 1017. Each gear transmission mechanism is the same. When the electric drive device 1020 rotates, the rotation direction of each gear transmission mechanism is the same. When the combined transmission mechanism 1000 and the electric drive device 1020 rotate, the worm wheels of the worm gear transmission mechanisms 701, 702, 703, 704, 705, 706, and 707 rotate in the same direction.

[0055] Embodiment 1 of a lifting mechanism in a combined transmission lifting step for assisting in going up and down stairs:

[0056] like Figure 1 , Figure 8 The lifting mechanism 103 shown includes an upper frame 1 and a lower frame 2. A lifting support group is provided between the upper frame 1 and the lower frame 2, which can drive the upper frame 1 to rise and fall. The lifting support group includes a lifting support 4 and a linkage mechanism 5B that drives the lifting support 4 to rise and fall. The linkage mechanism 5B is provided with a transmission connection port 5B1. The transmission connection port 5B1 is connected to the first coupling corresponding to each combined transmission device 200 to realize the conversion of rotation into movement. A pedal 6 is provided on the upper frame 1.

[0057] like Figure 8The lifting bracket 4 shown is an X-shaped bracket 4A1. The lifting bracket assembly consists of at least one pair of X-shaped brackets 4A1. Each pair of X-shaped brackets 4A1 is located on opposite sides between the upper frame 1 and the lower frame 2. Each bracket of the X-shaped bracket 4A1 has two support rods that are rotatably connected at the intersection point. The two support rods have four ends: top, bottom, left, and right. When the two support rods rotate around the intersection point and the two upper ends separate, the X-shaped bracket 4A1 lowers; when the two upper ends come closer together, the X-shaped bracket 4A1 rises. The upper two ends on the left in the figure are the upper left ends, and the upper two ends on the right are the upper right ends. The lower two ends... The left end in the diagram is the lower left end, and the right end is the lower right end. The upper right end and the lower right end are rotatably connected to the upper frame 1 and the lower frame 2, respectively. The upper left end and the lower left end are movably connected to the upper frame 1 and the lower frame 2, respectively. The lower left support section is between the lower left end of the X-shaped bracket 4A1 and the intersection point. A connecting rod 5D is provided between the lower left support sections of a pair of X-shaped brackets 4A1 to drive the X-shaped brackets 4A1 to perform shearing and lifting. The linkage mechanism 5B connects to the connecting rod 5D, thereby driving the connecting rod 5D to slide, and thus push and pull the support rod of the linkage X-shaped bracket 4A1, and link the upper frame 1 and the pedal 6 to lift and lower. The linkage mechanism 5B can be a telescopic rod mechanism.

[0058] Furthermore, a first pressure sensor 8 is provided between the upper frame 1 and the pedal 6 or at the bottom of the lower frame 2. The controller is electrically connected to the first pressure sensor 8. The first pressure sensor 8 can sense the pressure change on the pedal 6. When someone steps on the pedal 6, the pressure increases and when the person leaves, the pressure decreases.

[0059] Furthermore, the upper frame 1 or the pedal 6 is equipped with a safety protection component 7 that can extend and retract as the upper frame 1 moves up and down, thereby blocking the gap between the upper frame 1 and the lower frame 2. The safety protection component 7 can prevent foreign objects from entering the gap between the upper frame 1 and the lower frame 2 and being trapped. The safety protection component 7 can be multiple sliding plates that are slidably connected; as the upper frame 1 rises, the sliding plates automatically slide downwards under the influence of gravity.

[0060] Embodiment 2 of a lifting mechanism in a combined transmission lifting step for assisting in going up and down stairs:

[0061] like Figure 1 , Figure 9 The difference between Embodiment 2 and Embodiment 1 of the lifting mechanism shown is that:

[0062] The linkage mechanism 5B is a steering conversion mechanism and a sprocket structure. The sprocket structure includes a second sprocket 5B2 and a second chain 5C. There are two second sprockets 5B2. One second sprocket 5B2 is connected to the rotating shaft of the steering conversion mechanism, and the other second sprocket 5B2 is connected to the lower frame 2. A second chain 5C is connected between the two second sprockets 5B2. The connecting rod 5D is connected to the second chain 5C. The steering conversion mechanism is provided with a transmission connection port 5B1, which is connected to the first coupling corresponding to the joint transmission device 200 of the joint transmission mechanism 1000. Its rotation is turned by the steering conversion mechanism, and the second sprocket 5B2, the second chain 5C, and the connecting rod 5D are moved in linkage, thereby linking the X-shaped bracket 4A1, the upper frame 1, and the pedal 6 to rise and fall.

[0063] Embodiment 3 of a lifting mechanism in a combined transmission lifting step for assisting in going up and down stairs:

[0064] like Figure 10 The difference between Embodiment 3 and Embodiment 1 of the lifting mechanism shown is that:

[0065] The linkage mechanism 5B includes a steering conversion mechanism and a crank-connecting rod mechanism. One end of the crank of the crank-connecting rod mechanism is connected to the rotating shaft of the steering conversion mechanism, and the other end of the crank is connected to the connecting rod. The other end of the connecting rod is connected to the connecting rod 5D. When the crank makes one circular motion, it can link the upper frame 1 and the pedal 6 to rise and fall once. Therefore, the raising and lowering can be achieved without changing the direction of the motor.

[0066] Embodiment 4 of a lifting mechanism in a combined transmission lifting step for assisting in going up and down stairs:

[0067] like Figure 11 The difference between Embodiment 4 and Embodiment 1 of the lifting mechanism shown is that:

[0068] The lifting bracket 4 is a herringbone bracket 4A2. The lifting bracket assembly consists of at least one pair of herringbone brackets 4A2. Each herringbone bracket 4A2 has two support rods. The two ends that are connected are rotatably connected. When the other two ends are separated, the herringbone bracket 4A2 is lowered. When they are close together, the herringbone bracket 4A2 is raised, which can be folded and raised. Since a pair of herringbone brackets 4A2 also needs to be equipped with a device to keep the upper frame 1 balanced, for ease of explanation, the lifting bracket in this example consists of two pairs of herringbone brackets 4A2. The close ends of the two pairs of herringbone brackets 4A2 are rotatably connected. The lower right end of the right herringbone bracket 4A2 is rotatably connected to the lower frame 2. The other connection ends with the upper frame 1 and the lower frame 2 are movable connections.

[0069] Embodiment 5 of a lifting mechanism in a combined transmission lifting step for assisting in going up and down stairs:

[0070] like Figure 12The difference between Embodiment 5 and Embodiment 1 of the lifting mechanism shown is that:

[0071] The linkage mechanism 5B is a screw drive mechanism; the lifting support assembly has two pairs of herringbone brackets 4A2. The left support rod of the pair of herringbone brackets 4A2 on the left is connected to a connecting rod 5D, and a first slider 5F1 is provided on the connecting rod 5D. The right support rod of the pair of herringbone brackets 4A2 on the right is connected to a connecting rod 5D, and a second slider 5F2 is provided on the connecting rod 5D. The screw drive mechanism is provided with a double-threaded drive screw 5H. The first slider 5F1 and the second slider 5F2 are threadedly connected to the drive screw 5H. The rotation of the drive screw 5H causes the first slider 5F1 and the second slider 5F2 to move in opposite directions, and at the same time causes the two pairs of herringbone brackets 4A2 to move in opposite directions to the rotational connection point with the lower frame 2, thereby causing the upper frame 1 to rise or fall. The structural diagram of the double-threaded drive screw 5H is shown below. Figure 13 As shown.

[0072] In some embodiments, the combined transmission lifting step further includes a second pressure sensor or human body sensing device disposed at the high platform stairwell area 1038 and the low platform stairwell area 1030 of the staircase 100, the second pressure sensor and human body sensing device being communicatively connected to the controller.

[0073] Control method for the use of combined drive lifting steps:

[0074] like Figure 1 As shown:

[0075] S1: In manual start mode, after manual start, the controller controls the electric drive device 1020 to drive each adjacent lifting mechanism 103 to move up and down in opposite directions at a set speed. When going upstairs, the person bearing the weight of their body steps on the pedal 6 according to the rhythm of the reciprocating movement of the lifting mechanism 103. The pedal 6 rises to help the person climb the steps one by one until they reach the highest position of the lifting mechanism 103 pedal 6. When going downstairs, the person bearing the weight of their body steps on the pedal 6 according to the rhythm of the reciprocating movement of the lifting mechanism 103. The pedal 6 descends to help the person descend the steps one by one until they reach the lowest position of the lifting mechanism 103 pedal 6.

[0076] S2: In automatic start mode, when no one is on the pedal 6 of the lifting mechanism 103, and the controller controls the electric drive device 1020 to be in a waiting state; if someone steps on the low platform stairwell area 1030 first, and the pressure received by the second pressure sensor of the low platform stairwell area 1030 is greater than the preset value or the human body sensor detects a person, the controller controls the electric drive device 1020 to lower the lowest lifting mechanism 103 to the lowest position. When the foot bearing the weight of the person steps on the pedal 6 of the lowest lifting mechanism 103, and the pressure received by its first pressure sensor 8 is greater than the preset value, the lowest lifting mechanism 103 rises to the highest position, and the adjacent lifting mechanism 103 lowers to the lowest position, helping the person to climb one step. In this way, as the foot bearing the weight of the person steps on the nearest lifting mechanism 103, the person is helped to climb one step at a time until the person reaches the highest position of the pedal 6 of the highest lifting mechanism 103. The controller then controls the electric drive device 1020 to return to the waiting state.

[0077] S3. In automatic start mode, when no one is on the pedal 6 of the lifting mechanism 103 and the controller controls the electric drive device 1020 to be in a waiting state, if someone steps onto the high platform stairwell area 1038 first, and the pressure received by the second pressure sensor of the high platform stairwell area 1038 is greater than the preset value or the human body sensor detects a person, the controller controls the electric drive device 1020 to raise the pedal 6 of the highest lifting mechanism 103 to the highest position. When the foot bearing the weight of the human body steps onto the pedal 6 of the highest lifting mechanism 103 in front, and the pressure received by its first pressure sensor 8 is greater than the preset value, the highest lifting mechanism 103 descends to the lowest position, and the pedal 6 of its adjacent lifting mechanism 103 rises to the highest position to help the person go down one step. This continues, with the foot bearing the weight of the human body stepping onto the nearest lifting mechanism 103 in front, helping the person go down one step at a time until the person goes down to the low-high position of the pedal 6 of the lowest lifting mechanism 103. The controller then controls the electric drive device 1020 to return to the waiting state.

[0078] S4. In automatic start mode, if someone is on the pedal 6 of the lifting mechanism 103 and someone is going up or down the stairs, the steps will be raised and lowered in rhythm with the already triggered pedal 6 of the lifting mechanism 103 until no one is on the pedal 6 of the lifting mechanism 103. Then the controller will control the electric drive device 1020 to return to the waiting state.

[0079] like Figures 1 to 13As shown in the embodiments of the combined transmission lifting steps for assisting in going up and down stairs, there are multiple transmission nodes, which makes it easy to ensure that adjacent lifting mechanisms always move in opposite directions. For example, in the embodiment of the combined transmission mechanism 1000, the rotation directions of each adjacent transmission mechanism are opposite or the same. Each lifting mechanism also has multiple transmission nodes, which also makes it easy to ensure that adjacent lifting mechanisms 103 move in opposite directions when the same steering input is input. For example, in the embodiment of the lifting mechanism 103, the telescopic rod mechanism, as long as the screw threads of the telescopic rod mechanisms of adjacent lifting mechanisms 103 are turned in opposite directions, the telescopic directions can be reversed when the same steering input is input, thereby making the lifting directions of adjacent lifting mechanisms 103 reversed.

[0080] Without a reciprocating motion transmission structure in the middle, the electric drive device 1020 can control the forward and reverse rotation of the motor to realize the reciprocating lifting of the lifting mechanism 103.

[0081] There are reciprocating motion transmission structures in the middle, such as... Figure 10 As shown, in Embodiment 3 of the lifting mechanism 103, there is a crank structure. One revolution of the crank can lift the upper frame 1 and pedal 6 once, thus achieving reciprocating lifting without changing the motor's direction. Therefore, it is easy to control the electric drive device 1020 to achieve the functions of the control method described above.

[0082] The above description is merely an embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A combined transmission lifting step for assisting in going up and down stairs, characterized in that: It includes a combined transmission mechanism (1000) that can be installed on a staircase (100) and a plurality of lifting mechanisms (103). The combined transmission mechanism (1000) is equipped with an electric drive device (1020), a controller and a plurality of combined transmission devices (200) connected in sequence. The combined transmission device (200) is equipped with a first coupling, which is connected to the lifting mechanism (103) respectively. When the electric drive device (1020) drives the combined transmission device (200) to rotate, the connected lifting mechanisms (103) lift and lower in tandem, and the lifting directions of two adjacent lifting mechanisms (103) are opposite. The lifting mechanism (103) includes an upper frame (1) and a lower frame (2). A lifting bracket group is provided between the upper frame (1) and the lower frame (2) to drive the upper frame (1) to lift. The lifting bracket group includes a lifting bracket (4) and a linkage mechanism (5B) for driving the lifting bracket (4) to lift. The linkage mechanism (5B) is provided with a transmission connection port (5B1). The transmission connection port (5B1) is connected to the first coupling corresponding to each combined transmission device (200).

2. The combined transmission lifting step for assisting in going up and down stairs according to claim 1, characterized in that: The combined transmission device (200) includes a first chain (209), which is connected in a staggered manner or in the same direction to a plurality of first sprockets. Each first sprocket is connected to a lifting mechanism (103) via a first coupling. When the first chain (209) is connected in a staggered manner to a plurality of first sprockets, the rotation directions of two adjacent first sprockets are opposite. When the first chain (209) is connected in the same direction to a plurality of first sprockets, the rotation directions of two adjacent first sprockets are the same.

3. The combined transmission lifting step for assisting in going up and down stairs according to claim 1, characterized in that: The combined transmission device (200) includes a plurality of sequentially axially connected driving bevel gears and driven bevel gears that mesh with each driving bevel gear. Each driven bevel gear is connected to the lifting mechanism (103) through a first coupling. Two adjacent driving bevel gears are arranged opposite to each other or back to back, so that the rotation directions of the two adjacent driven bevel gears are opposite; or the rotation directions of the two adjacent driving bevel gears are the same, and the rotation directions of the two adjacent driven bevel gears are the same.

4. The combined transmission lifting step for assisting in going up and down stairs according to claim 1, characterized in that: The combined transmission device (200) includes a plurality of worms axially connected in sequence and worm wheels meshing with each worm. Each worm wheel is connected to the lifting mechanism (103) through a first coupling. The threads of two adjacent worms have opposite directions, so that the adjacent worm wheels rotate in opposite directions; or the threads of two adjacent worms have the same direction, so that the adjacent worm wheels rotate in the same direction.

5. A combined transmission lifting step for assisting in going up and down stairs according to any one of claims 1-4, characterized in that: The upper frame (1) is provided with a pedal (6), and a first pressure sensor (8) is provided between the upper frame (1) and the pedal (6) or at the bottom of the lower frame (2). The first pressure sensor (8) is communicatively connected to the controller.

6. The combined transmission lifting step for assisting in going up and down stairs according to claim 5, characterized in that: The lifting bracket (4) includes an X-shaped bracket (4A1) or a herringbone bracket (4A2). The lifting bracket (4) is provided with a connecting rod (5D) that can drive the lifting bracket (4) to perform shearing lifting when sliding. The linkage mechanism (5B) connects to the connecting rod (5D) so as to drive the connecting rod (5D) to slide.

7. A combined transmission lifting step for assisting in going up and down stairs according to claim 6, characterized in that: The linkage mechanism (5B) is a telescopic rod mechanism or a screw drive mechanism; when the linkage mechanism (5B) is a telescopic rod mechanism, the telescopic end of the telescopic rod mechanism is connected to the connecting rod (5D); when the linkage mechanism (5B) is a screw drive mechanism, the lifting support assembly has two pairs of herringbone brackets (4A2), the left support rod of the pair of herringbone brackets (4A2) on the left is connected to the connecting rod (5D), and the connecting rod (5D) is provided with a first slider (5F1), and the right support rod of the pair of herringbone brackets (4A2) on the right is connected to the connecting rod (5D). The connecting rod (5D) is equipped with a second slider (5F2). The screw transmission mechanism is equipped with a transmission screw (5H) with a double-helix thread. The first slider (5F1) and the second slider (5F2) are threadedly connected to the transmission screw (5H). The rotation of the transmission screw (5H) is linked to the first slider (5F1) and the second slider (5F2) to move in opposite directions or in opposite directions. At the same time, it is linked to the two pairs of herringbone brackets (4A2) to move in opposite directions or in opposite directions to the rotation connection point with the lower frame (2), thereby linking the upper frame (1) to rise or fall.

8. A combined transmission lifting step for assisting in going up and down stairs according to claim 6, characterized in that: The linkage mechanism (5B) includes a steering conversion mechanism, a second sprocket (5B2), and a second chain (5C). There are two second sprockets (5B2); one second sprocket (5B2) is connected to the rotating shaft of the steering conversion mechanism, and the other second sprocket (5B2) is rotatably connected to the lower frame (2). The connecting rod (5D) is fixed to the second chain (5C).

9. A combined transmission lifting step for assisting in going up and down stairs according to claim 2, characterized in that: The linkage mechanism (5B) includes a steering conversion mechanism and a crank-connecting rod mechanism. One end of the crank (5F) of the crank-connecting rod mechanism is connected to the rotating shaft of the steering conversion mechanism, and the other end of the crank (5F) is connected to the connecting rod (5D) through a connecting rod.

10. A combined transmission lifting step for assisting in going up and down stairs according to claim 6, characterized in that: The combined transmission lifting step also includes a second pressure sensor or human body sensing device located in the high platform stairwell area (1038) and the low platform stairwell area (1030) of the staircase (100), and the second pressure sensor and human body sensing device are communicatively connected to the controller.

Images