AU2020102163A4

AU2020102163A4 - A stair climbing assistant

Info

Publication number: AU2020102163A4
Application number: AU2020102163A
Authority: AU
Inventors: Xiao YUAN
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2020-10-15
Anticipated expiration: 2028-09-07

Abstract

The utility model relates to the technical field of mechanical technology for the aged and the disabled, and illustrates a stair climbing assistant, comprising the carrying assembly, the support frame and the control system. The carrying assembly is vertically mounted on the support frame which is deployed on one side of stairs. The carrying assembly comprises baseboard, left board, right board, left pushrod, right pushrod, carrier board and drive assembly. The baseboard is flexibly stuck in the support frame, and between the two is the drive assembly which pushes the baseboard to go up and down. Both ends of the carrier board are respectively hinged with hooks for horizontal maintenance, while the left and right boards are respectively provided with appropriate hook holes. The baffle assembly and the guide boards are deployed on the rear and front ends of the carrier board. The utility model can be applied upon the simple modification on stairs, enabling a wheelchair to climb up and down easily with the assistance of a man. 1/2 Fig. 1

Description

1/2

Fig. 1

A stair climbing assistant

Technical Field

[0001] The utility model relates to the technical field of mechanical technology for the aged and the disabled, especially a stair climbing assistant.

Background

[0002] According to the statistics of China National Committee on Ageing, there are 143 million of the elderly over 60 years old in China, accounting for more than 10% of total population. There are nearly 9 million people with physical disabilities, including about 2 million people with lower limb disabilities. Most of them rely on wheelchairs to move around. While many newer buildings have barrier-free access and elevators for wheelchairs, older buildings still have to take stairs. Due to structural limitations, ordinary wheelchairs (incl. electric wheelchairs) require at least two people to climb stairs, which severely hampers the user's daily life.

[0003] In order to expand applications, experts at home and abroad have done researches on the way of wheelchair climbing from the following two aspects. The first option is to improve the structure by deformable tracks, joint wheels, etc. The iBOT electric wheelchair designed by Segway, an American company, is typical. The wheelchair adopts a double epicyclic rear gear structure which is balanced by a complex gyroscopic mechanism. When users climb the stairs, they should turn back to the stairs and lean back, and then try their best to grasp the handrail of the stairs for assistance. Users must be specially trained to go up and down the stairs. An experienced facilitator is still recommended by the manufacturer. Another research aims to install a guide rail on the stair railing, which will connect the wheelchair and the rail to move the wheelchair as driven by motor. Both solutions are highly paid for reform, not safe and hard to widen applications.

Summary

[0004] The utility model aims to provide a stair climbing assistant which can be applied upon the simple modification on stairs, enabling a wheelchair to climb up and down easily with the assistance of a man.

[0005] The technical solution adopted by the utility model to achieve the above purpose is as follows:

[0006] The utility model discloses a stair climbing assistant, comprising the carrying assembly to place the wheelchair, the support frame and the control system for assistant running; wherein the carrying assembly is vertically mounted on the support frame which is deployed on one side of stairs.

[0007] The carrying assembly comprises baseboard, left board, right board, left pushrod, right pushrod, carrier board and drive assembly. The baseboard is flexibly stuck in the support frame, and between the two is the drive assembly which pushes the baseboard to go up and down. The left and right boards are hinged to both ends of the baseboard respectively. The left and right pushrods are hinged to both ends of the baseboard rotationally. The shaft ends of both pushrods are laid on both boards. The carrier board is hinged to the rear end of the baseboard and can be turned back and forth. Both ends of the carrier board are respectively hinged with hooks for horizontal maintenance, while the left and right boards are respectively provided with appropriate hook holes. A baffle assembly is deployed on the rear end of the carrier board to restrict the wheelchair's movement during transit. The front end is hinged to guide boards for easy movement of wheelchair to the baseboard.

[0008] Further, the baffle assembly comprises the baffle and the inclined pushrod; the baffle is vertically hinged to the carrier board, the bottom end of the inclined pushrod is fixed on the carrier board and the shaft end is fixed on the baseboard.

[0009] Further, the inclined pushrod is placed between the carrier board and the baffle.

[0010] Further, the left, right and inclined pushrods are run electronically.

[0011] Further, the drive assembly comprises the first driving motor, pinion and rack. The first driving motor is fixed on the baseboard, while the racks are fixed on both ends of the support frame. The pinion is connected to the shaft end of thefirst driving motor and engages with racks.

[0012] Further, the flip assembly comprises the pin shaft and the second driving motor; the second driving motor is fixed on stairs; the support frame is hinged to one end of stairs by means of a pin shaft that flips from side to side, and the outer side of the pin shaft is fixed to the support frame. One end of the pin shaft is fixed with the shaft end of the driving motor, and the other end is flexibly arranged on the bearing seat that fixes stairs.

[0013] Further, the control system comprises the sensor for detecting the appropriate position of a wheelchair; the senor is deployed on the carrying assembly. The inclined pushrod will extend the shaft and hold up the baffle when the wheelchair fully embedded in the auxiliary device is detected by the sensor, with view to preventing the wheelchair from moving. Otherwise the inclined pushrod will remain in contraction state.

[0014] The benefits of the utility model areas follows:

1. The utility model can help wheelchair users climb stairs with the help of others on the premise of simple transformation of stairs, which is safe and reliable in structure. Users or auxiliary operators can get rid of special training, and the device is easy to use and promote.

2. The carrying assembly can be folded for storage, and the support frame can be flipped up and down. The auxiliary device is automatically packed up and placed next to stairs by the second driving motor, which reduces the space taken up when the device is idle.

Brief Description of Drawings

[0015] Fig. 1 is a schematic structural diagram of the utility model.

[0016] Fig. 2 is the partial magnification of part A in Fig. 1.

[0017] Fig. 3 is a structural diagram of carrying assembly.

[0018] Description of major component symbols:

[0019] 1. carrying assembly, 2. support frame, 21. stair, 3. baseboard, 4. left board, 5. right board, 6. left pushrod, 7. carrier board, 8. hook, 9. hook hole, 10. guide board, 11. baffle, 12. inclined pushrod, 13. first driving motor, 14. pinion, 15. rack, 16. pin shaft, 17. second driving motor

Description of Embodiments

[0020] To promote technical personnel's understanding of the technical proposal, the utility model will be further elaborated hereafter in connection with the drawings and embodiments.

[0021] As shown in Fig. 1-3, the utility model discloses a stair climbing assistant, comprising the carrying assembly 1 to place wheelchair, the support frame 2 and the control system to run the auxiliary device. The carrying assembly 1 is vertically mounted on the support frame 2 which is deployed on one side of stairs 21.

[0022] The carrying assembly 1 comprises baseboard 3, left board 4, right board 5, left pushrod 6, right pushrod, carrier board 7 and drive assembly. The baseboard 3 is flexibly stuck in the support frame 2, and between the two is the drive assembly which pushes the baseboard 3 to go up and down. The left and right boards 4 &5 are hinged to both ends of the baseboard 3 respectively. The left and right pushrods 6 are hinged to both ends of the baseboard 3 rotationally. The shaft ends of both pushrods 6 are laid on both boards 4&5. The carrier board 7 is hinged to the rear end of the baseboard 3 and can be turned back and forth. Both ends of the carrier board 7 are respectively hinged with hooks 8 for horizontal maintenance, while the left and right boards 4&5 are respectively provided with appropriate hook holes 9. A baffle assembly is deployed on the rear end of the carrier board 7 to restrict the wheelchair's movement during transit. The front end is hinged to guide board 10 for easy movement of wheelchair to the baseboard 3.

[0023] The baffle assembly comprises the baffle 11 and the inclined pushrod 12; the baffle 11 is vertically hinged to the carrier board 7, the inclined pushrod 12 is placed between the carrier board 7 and the baffle 11. The bottom end of the inclined pushrod 12 is fixed on the carrier board 7 and the shaft end is fixed on the baffle 11.

[0024] Left pushrod 6, right pushrod and inclined pushrod 12 are set for easy use.

[0025] The drive assembly comprises the first driving motor 13, pinion 14 and rack 15. The first driving motor 13 is fixed on the baseboard 3, while the racks 15 are fixed on both ends of the support frame 2. The pinion 14 is connected to the shaft end 13 of thefirst driving motor and engages with racks.

[0026] For better storage, the auxiliary device comprises a flip assembly consisting of a pin shaft 16 and a second driving motor 17. The second driving motor 17 is fixed on stairs 21; the support frame 2 is hinged to one end of stairs 21 by means of a pin shaft 16 that flips from side to side, and the outer side of the pin shaft 16 is fixed to the support frame 2. One end of the shaft pin 16 is connected to the shaft end of the second driving motor, and the other end is fixed on the bearing pedestal of stairs 21.

[0027] The control system comprises the sensor for detecting the appropriate position of a wheelchair; the senor is deployed on the carrying assembly 1. The inclined pushrod 12 will extend the shaft and hold up the baffle 11 when the wheelchair fully embedded in the auxiliary device is detected by the sensor, with view to preventing the wheelchair from moving. Otherwise the inclined pushrod 12 will remain in contraction state.

[0028] Switch on to use: the second driving motor 17 flips the auxiliary device down the side of stairs 21 until the support frame 2 fits the stairs 21. The left and right pushrods 6 unfold the left and right boards 4&5 until they are perpendicular to the underside. The carrier board 7 is flipped from the baseboard 3 horizontally, and the hooks 8 on both sides are hung on the left board 4 and the hook hole 9 on the right side. The auxiliary device is then deployed.

[0029] When the worker presses the climbing-up button, the carrying assembly 1 will move to the bottom of stairs 21. Meanwhile, the inclined pushrod 12 will shrink, the baffle 11 will be flat, and the wheelchair will enter the carrier board. The inclined pushrod 12 will then extend the shaft end to hold up the baffle 11, so as to prevent the wheelchair from moving, and then the carrying assembly 1 will transport the wheelchair upstairs. As the front end of baseboard 3 is hinged to wheelchair-portable guide boards 10, when the carrying assembly 1 reaches the top of stairs 21, the free end of the guide board 10 will contact the ground under the influence of gravity, acting as a transition between baseboard 3 and the bottom.

[0030] The worker presses the going-down button to take wheelchair down the stairs. The carrying assembly 1 moves to the top of stairs 21, and the inclined pushrod 12 extends the shaft end to hold up the baffle 11, so as to prevent the wheelchair from moving forward. The wheelchair enters the carrier board 7 through the guide board 10. After it is in place, the carrying assembly 1 transports the wheelchair downstairs. After the wheelchair touches the ground, the inclined pushrod 12 shrinks and the baffle 11 turns flat to push the wheelchair from the carrier board.

[0031] In case of idling for along time, remove the hooks 8 fromthe hookhole 9, fold the carrier board 7 upward to fit the bottom board 3, and shut down the device. The left pushrod 6 and the right pushrod fold the left board 4 and the right board 5. The second driving motor 17 flips the auxiliary device to the side of stairs 21, tightly closed with the handrail.

[0032] In a nutshell, the utility model can be applied upon the simple modification on stairs, enabling a wheelchair to climb up and down easily with the assistance of a man.

[0033] The above are the preferred embodiments of the utility model, but the protection scope of the utility model is not limited to these. Any change or substitution that can easily occur to those skilled in the technical field within the technical scope illustrated by the utility model shall be covered within the protection scope of the utility model.

Claims

CLAIMS:

1. A stair climbing assistant, wherein: comprising the carrying assembly to place the wheelchair, the support frame and the control system for assistant running; wherein the carrying assembly is vertically mounted on the support frame which is deployed on one side of stairs.

The carrying assembly comprises: baseboard, left board, right board, left pushrod, right pushrod, carrier board and drive assembly; wherein the baseboard is flexibly stuck in the support frame, and between the two is the drive assembly which pushes the baseboard to go up and down; wherein the left and right boards are hinged to both ends of the baseboard respectively; wherein the left and right pushrods are hinged to both ends of the baseboard rotationally; wherein the shaft ends of both pushrods are laid on both boards; wherein the carrier board is hinged to the rear end of the baseboard and can be turned back and forth. Both ends of the carrier board are respectively hinged with hooks for horizontal maintenance, while the left and right boards are respectively provided with appropriate hook holes; wherein a baffle assembly is deployed on the rear end of the carrier board to restrict the wheelchair's movement during transit. The front end is hinged to guide boards for easy movement of wheelchair to the baseboard.

2. A stair climbing assistant according claim 1, wherein: the baffle assembly comprises the baffle and the inclined pushrod; the baffle is vertically hinged to the carrier board, the bottom end of the inclined pushrod is fixed on the carrier board and the shaft end is fixed on the baseboard.

3. A stair climbing assistant according claim 2, wherein: the inclined pushrod is placed between the carrier board and the baffle.

4. A stair climbing assistant according claim 2, wherein: the left, right and inclined pushrods are run electronically.

5. A stair climbing assistant according claim 1, wherein: the drive assembly comprises the first driving motor, pinion and rack; the first driving motor is fixed on the baseboard, while the racks are fixed on both ends of the support frame; the pinion is connected to the shaft end of the first driving motor and engages with racks.

6. A stair climbing assistant according claim 1, wherein: the flip assembly, comprising the pin shaft and the second driving motor; the second driving motor is fixed on stairs; the support frame is hinged to one end of stairs by means of a pin shaft that flips from side to side, and the outer side of the pin shaft is fixed to the support frame; one end of the pin shaft is fixed with the shaft end of the driving motor, and the other end is flexibly arranged on the bearing seat that fixes stairs.

7. A stair climbing assistant according claim 1, wherein: the control system comprises the sensor for detecting the appropriate position of a wheelchair, as well as switch-controlling buttons; the senor is deployed on the carrying assembly.