Stair climbing vehicle
By installing hub motors in each star wheel of the stair-climbing vehicle and using conductive slip rings to transmit power signals, the problems of bulky and noisy transmission mechanisms and uncoordinated movement up and down stairs have been solved, achieving lightweight, low-noise, and coordinated movement up and down stairs.
Patent Information
- Application Number
- CN202520515683.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-24
AI Technical Summary
Existing stair-climbing wheelchair transmission mechanisms are bulky, noisy, and uncoordinated when going up and down stairs.
Each star wheel is driven by a hub motor, and power and signal lines are transmitted through conductive slip rings to achieve independent control, with each star wheel rotating independently and the conductive slip ring rotating independently.
It achieves lightweight, low-noise, and coordinated operation when going up and down stairs, reducing the risk of collision with clothing.
Smart Images
Figure CN223934768U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a vehicle (wheelchair), and more particularly to a stair-climbing vehicle (wheelchair). Background Technology
[0002] Existing stair-climbing vehicles (wheelchairs) are powered by a motor on the frame that transmits power to star wheels via concentric dual shafts and gears. This transmission mechanism is bulky and noisy; the star wheels can only rotate and stop together, making it uncoordinated when going up and down stairs. Summary of the Invention
[0003] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a stair-climbing vehicle (wheelchair) that is lightweight, noiseless, and has independently rotating star wheels for coordinated movement up and down stairs.
[0004] This utility model discloses a stair-climbing vehicle, in which each star wheel of the driving double wheel has a hub motor. The shaft of the hub motor is fixed on the wheel frame, and the power line and signal line are transmitted to the wheel frame through conductive slip rings.
[0005] With the above solution, this utility model has the following advantages: it makes the stair-climbing vehicle lighter and quieter, each star wheel can be independently controlled to rotate, making going up and down stairs more coordinated, and when traveling on flat ground, the upper wheels do not rotate to avoid hitting clothing. Attached Figure Description
[0006] Figure 1 This is a schematic diagram of the oblique view of the present invention;
[0007] Figure 2 This is a right-side view of the present invention; Figure 3 This is a schematic diagram of the present invention from an oblique angle.
[0008] Figure 4 This is a detailed schematic diagram of the conductive slip ring of this utility model;
[0009] In the diagram: 1. Control handle; 2. Omnidirectional wheel; 3. Omnidirectional double wheel frame; 4. Hub motor; 5. Drive double wheel frame; 6. Hub motor drive controller; 7. Wheel frame motor; 8. Seat fore-and-aft adjustment push rod motor; 9. Seat tilt adjustment push rod motor; 10. Conductive slip ring; 11. Rotor; 12. Stator; 13. Frame square wire; 14. Drive double wheel frame wire. Detailed Implementation
[0010] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.
[0011] Reference Figure 1 , Figure 2 , Figure 3 The vehicle has four sets of double wheels; the last two sets are drive double wheels; each drive double wheel set includes a cross-shaped drive double wheel frame 5 and four star wheels, each star wheel containing a hub motor 4, the hub motor's shaft being fixed to the end of the wheel frame; the wheel frame is fixed to the shaft of the wheel frame motor 7. The vehicle also has a battery and a control system, the control system including a control handle 1.
[0012] Reference Figure 4 The shaft of the wheel frame motor 7 is a hollow shaft, inside which is installed the rotor 11 with conductive slip rings and the drive double wheel.
[0013] The drive wire 14 and conductive slip rings are readily available and can be purchased. Power and signal lines are transmitted to the wheel frame via the conductive slip rings. The power and signal lines are divided into two sections: the frame square wire 13 and the drive double wheel frame wire 14. The frame square wire 13 and the drive double wheel frame wire 14 are electrically connected together via internal slip rings. The frame square wire 13 is fixed relative to the frame, while the drive double wheel frame wire 14 rotates with the rotor 11. The drive double wheel frame wire 14 directly enters the hub motor drive controller 6.
[0014] Reference Figure 1 , Figure 2 , Figure 3 The first two sets are omnidirectional double wheels. Each set includes a cross-shaped omnidirectional double wheel frame 3 and four star wheels, each of which is an omnidirectional wheel 4. Omnidirectional wheels are readily available. Omnidirectional wheels can turn forward and backward, as well as move sideways. Turning is achieved through the differential of the rear drive double wheels, with the front omnidirectional double wheels assisting in the turning motion.
[0015] Reference Figure 1 , Figure 2 , Figure 3 When going up or down stairs, the seat's fore-and-aft position and tilt angle need to be adjusted. The seat fore-and-aft adjustment push rod motor 8 slides the seat on the base's slide rail, thus adjusting the seat's fore-and-aft position. The seat tilt adjustment push rod motor 9 rotates the seat around the base axis, thus adjusting the seat's tilt angle.
Claims
1. A stair-climbing vehicle, comprising a frame, double wheels, a battery, and a control system, characterized in that: The vehicle has four sets of double wheels; at least two of which are drive double wheels; each set of drive double wheels includes a drive double wheel frame and at least three star wheels, each star wheel contains a hub motor, the hub motor shaft is fixed to the wheel frame; the wheel frame is fixed to the shaft of the wheel frame motor.
2. The stair-climbing vehicle according to claim 1, characterized in that: Two of the two sets of the double wheel are omnidirectional double wheels. Each omnidirectional double wheel consists of a wheel frame and at least three star wheels, each of which is an omnidirectional wheel.
3. The stair-climbing vehicle according to claim 1, characterized in that: The wheel frame motor has a conductive slip ring inside its shaft.
4. The stair-climbing vehicle according to claim 1, characterized in that: The seat's tilt angle and fore-aft position are adjusted by a push rod motor.