Senior electric motor car

The dual-wheel front-drive tricycle with in-wheel motors and rein-style steering addresses structural complexity and steering challenges, providing a safe and intuitive operation through sensor-equipped handrails.

JP2025170724APending Publication Date: 2025-11-19I DOS KIKAKU CO LTD
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Patent Information

Application Number
JP2024084390
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-05-07
Publication Date
2025-11-19

AI Technical Summary

Technical Problem

Four-wheeled vehicles have complex structures, electric wheelchairs face directional issues, three-wheeled vehicles with rear differential gears or single-wheel drive face limitations, and front-drive three-wheeled vehicles require heavy steering or turning angle motors.

Method used

A dual-wheel front-drive tricycle with in-wheel motors and a rein-style steering system using safety handrails equipped with sensors for precise control, eliminating complex mechanisms and enabling safe, intuitive operation.

Benefits of technology

The tricycle achieves a simple mechanical structure with safe and intuitive steering, allowing hands-free operation and precise control through sensors, enhancing maneuverability and ease of use.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide a three-wheeled electric motor car that can be driven in a diverse and various manner.SOLUTION: A drive unit 1 includes drive wheels 2 on the right and left, and includes a rotary bearing 3, a control board 4, a steering angle sensor 5, and a battery 6 that are arranged therein, and a cover 9 equipped with a charging connector 7 and a control connector 8. The drive unit 1 is coupled to a pivot shaft of a senior electric motor car body, an XYZ sensor 13 for steering is incorporated into a safety handrail, and a spinning rear wheel 14 and a brake 15 are attached to the car body, and armrests, a chair, and a step stool are installed thereon.SELECTED DRAWING: Figure 1
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Description

[Technical Field]

[0001] This is a three-wheeled electric vehicle with dual front drive wheels, and the angle of the front wheels can be changed by controlling the left and right rotation direction of the front wheels. Multiple sensors are installed on the left and right of the safety handrail, and the combination of the left and right sensors allows for rein-like operation. Technical background

[0002] The twin-wheel, front-wheel-drive tricycle with in-wheel motors has an extremely small mechanical structure. In addition, by controlling the angle of the front wheels by the rotation direction and speed of the left and right wheels, an angle control motor is not required, and the vehicle can be driven by moving the safety handrail like a rein. Summary of the Invention Problems that the invention aims to solve

[0003] Four-wheeled vehicles have a complex structure similar to that of regular cars; electric wheelchairs will freeze if the directional wheels are pointed in the wrong direction; three-wheeled vehicles have a simple structure, but either use a differential gear on the rear wheels or are single-wheel drive; the former have a complex structure, and the latter cannot get out if they fall into a rut; front-drive three-wheeled vehicles have heavy steering and require power assist or a turning angle motor. The dual-wheel front-drive tricycle solves all of these problems by using in-wheel motors on both wheels, and by using a handrail and rein system for steering, it allows for safe driving with both hands on the wheel.

[0004] The dual-wheel drive front wheels with in-wheel motors eliminate the need for complicated mechanisms, the rear wheels are non-drive wheels with only brakes, the steering angle is determined by the direction and speed of rotation of the dual wheels, the left and right pillars of the safety handrail are equipped with ZXY sensors, and steering is rein-style, when in the center position for the front and rear, pushing to the right will turn right in a fixed position, pushing to the left will turn left in a fixed position, pulling towards you will move forward, when pulled towards you, pushing to the right will turn right while traveling, pushing to the left will turn left while traveling, pushing the handrail forward or in while traveling brakes, when stopped, pushing forward will reverse, pushing to the right front will turn right while traveling, pushing to the left front will turn left while traveling, pulling the safety handrail upward will accelerate, etc. By combining the left and right, a variety of steering operations are possible. Effects of the invention

[0005] This electric elderly vehicle with dual front-wheel drive and three-wheel rear wheels driven by in-wheel motors has an extremely simple mechanical structure, consisting only of a front wheel turning function and a rear wheel braking mechanism.A small computer inside the dual front-wheel drive unit measures the steering angle of the dual front wheels and controls the direction and speed of rotation of the left and right axes of the dual front wheels independently to enable driving and turning.The left and right pillars of the safety handrail are equipped with XYZ sensors, which allow the safety handrail to be moved forward, backward, left, right, up and down, so it can be operated using the safety handrail as a handrail. [Brief explanation of the drawings]

[0006] [Figure 1] 1 is a configuration diagram showing a first embodiment of the invention according to this application. [Figure 2] FIG. 1 is a configuration diagram showing the operation of a first embodiment of the invention according to this application. DETAILED DESCRIPTION OF THE INVENTION

[0007] The drive unit (1) has drive wheels (2) attached to the left and right, a rotary bearing (3) fixed in the center, a control board (4), a steering angle sensor (5), and a battery (6) attached, and a cover (9) with a charging connector (7) and a control connector (8) attached. The electric cart for the elderly (10) is equipped with a swivel (11), a safety handrail (12), XYZ (13) on the left and right pillars of the safety handrail, a spinning rear wheel (14), and a brake (15). Armrests (16), a chair (17), and a step (18) are also installed, and the drive unit (1) is connected. [Explanation of symbols]

[0008] 1 Drive unit 2 drive wheels 3 Slewing bearing 4 Control board 5 Steering angle sensor 6 Battery 7 Charging connector 8 Control Connector 9 Cover 10 Main Unit 11 Swivel axis 12 Safety handrails 13 XYZ sensor 14. Spinning rear wheel 15 Brake 16 Armrest 17 Chairs 18 Stepping Stone

Claims

1. An electric vehicle for the elderly with a tricycle structure and two independently driven front wheels.

2. This electric vehicle for the elderly has a tricycle structure, and the steering angle of the front wheels can be changed by independently controlling the left and right front wheels.

3. This electric vehicle for the elderly has a tricycle structure, with the front wheels being dual-wheeled and equipped with regenerative brakes, and the rear wheels being non-drive wheels and equipped with mechanical brakes.

4. This tricycle-structured electric vehicle for the elderly has XYZ sensor switches on both sides of the movable handrail, and various exercises can be performed by combining the positions of the left and right switches.