Motor Driven Vehicle Vibration Feedback Mechanism
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Solution Overview
Problem
Motor driven vehicles equipped with electric motors lack the sensory feedback of vibrations and sounds typically associated with internal combustion engine vehicles, making it difficult for occupants to intuitively grasp the vehicle's condition.
Innovation Solution
A motor driven vehicle design that incorporates a vibration generating device and a sound producing device integrated into the drive force transmission path from the electric motor to the rear wheel, utilizing rotating bodies with embedded weights to create vibrations and sounds synchronized with the rotational speed of the electric motor, allowing for adjustable and pulsating feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a vibration generator with eccentric weight is used in the handlebar grip, then vibration is generated, but the vibration is pseudo and does not reflect actual drive conditions
Solution Approach 1:
The patent introduces a vibration generation unit as an intermediary component installed on the drive force transmission path between the drive source and the driven member. This unit includes a vibration generating body with unbalanced weight that converts drive force into authentic vibration, which is then transmitted through the transmission path to the rider, providing reliable feedback that reflects actual drive conditions.
Solution Approach 2:
The vibration generating body utilizes the drive force itself as the energy source for vibration generation, rather than requiring a separate power source. The unbalanced weight structure automatically converts the rotational drive force into vibrational motion, making the system self-sufficient and ensuring the vibration authentically represents the drive source's operational state.
2Ease of manufacture
If a speaker is used to produce announcing sound, then sound is generated, but the sound is pseudo and does not resemble actual engine sound
Solution Approach 1:
The patent introduces a sound generation unit as an intermediary component installed on the drive force transmission path. This unit includes a sound generating body that converts drive force into acoustic waves, which are then transmitted through the transmission path to the rider, providing reliable sound feedback that authentically resembles engine sound based on the actual drive conditions.
Solution Approach 2:
The sound generating body utilizes the drive force itself as the energy source for sound generation, rather than requiring a separate power source. The structure automatically converts the rotational drive force into acoustic vibrations, making the system self-sufficient and ensuring the sound authentically represents the drive source's operational state.
3Reliability
If vibration generating device is installed on the drive force transmission path, then authentic vibration is generated, but the device complexity increases
Solution Approach 1:
The patent combines the vibration generation function with the existing drive force transmission path by installing the vibration generating unit directly on the transmission components. The vibration generating body is integrated into the transmission path structure, merging the vibration generation function with the existing mechanical components rather than adding completely separate systems.
Solution Approach 2:
The transmission path components serve multiple functions: they transmit drive force from the drive source to the driven member while simultaneously serving as the mounting structure and transmission medium for vibration feedback. This multi-functionality reduces the need for additional dedicated components and simplifies the overall system structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Provides authentic vibration and sound feedback to the rider, enabling a more intuitive sense of the vehicle's condition, with the ability to adjust the intensity and type of vibrations and sounds for a more realistic experience.
Implementation Method 1
the vibration generating device is composed of rotating bodies that lose rotational balance during rotation
Data Source
AI summary
In a motor driven vehicle in which an electric motor is disposed in a vehicle-body-rear portion of a swing arm swingably supported by a body frame and the vehicle travels by transmitting the drive force of the electric motor to a rear wheel, a vibration generating device for generating vibration in accordance with the transmitted drive force is installed on a drive force transmission path from the electric motor to the rear wheel. The vibration generating device includes a gear pair partially embedded with respective weights to lose a rotational balance during rotation. A sound producing device for producing a predetermined sound in accordance with the transmitted drive force is installed on the same transmission path. The sound producing device is driven by a transmitting device reciprocating through contact with a cam attached to a reduction gear serving as a rotating body.