Motorcycle License Plate Light Floating Mount Vibration Isolation
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Solution Overview
Problem
Motorcycles experience significant vibrations due to internal combustion engine displacement and cylinder number, leading to issues like disconnection and damage of the license plate light attachment, necessitating effective vibration attenuation.
Innovation Solution
A license plate light attaching structure with a light main body, light holder, and housing, where the housing is floatingly supported on the rear fender through a first elastic body and fixed by a screw member, and the light holder is floatingly supported on the housing through a second elastic body, with screw axes oriented in different directions to absorb and prevent vibration transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single elastic body is used to support the license plate light, then vibration attenuation is provided, but the attaching strength is insufficient under high vibration conditions
Solution Approach 1:
The single elastic body support is divided into multiple elastic bodies (first elastic body for housing support, second elastic body for light holder support). This segmentation distributes the vibration attenuation function across multiple components, enhancing overall reliability and attaching strength while maintaining vibration isolation effectiveness.
Solution Approach 2:
The patent introduces multi-directional vibration attenuation by orienting screw members in different directions (front-rear direction and upward-downward direction). This dimensional approach to mounting creates a three-dimensional vibration isolation system that addresses vibrations from multiple sources, improving reliability without compromising vibration attenuation.
2Reliability
If multiple screw members are used to fix the license plate light, then attaching strength is improved, but vibration attenuation is reduced
Solution Approach 1:
Elastic bodies are introduced as intermediary elements between the screw members and the components they fasten. These elastic intermediaries allow the screw members to provide secure mechanical attachment while the elastic materials absorb vibrations, preventing them from being transmitted to the light main body. This resolves the contradiction by decoupling the fastening function from the vibration transmission path.
Solution Approach 2:
The attachment system combines rigid components (screw members, housing, light holder) with elastic materials (elastic bodies) to create a composite structure. The rigid parts provide attaching strength while the elastic parts provide vibration attenuation, achieving both requirements simultaneously through material composition rather than relying on a single material type.
3Reliability
If the screw member axis is aligned with the vibration direction, then attaching strength is maximized, but vibration transmission increases
Solution Approach 1:
The patent employs asymmetric orientation of screw members, with the first screw member extending in the front-rear direction and the second screw member extending in the upward-downward direction. This asymmetric, multi-directional arrangement ensures that no single screw member is aligned with the primary vibration direction, reducing vibration transmission while maintaining attaching strength through distributed fastening points.
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
This configuration effectively reduces vibrations transmitted to the license plate light, preventing issues like disconnection and damage, and enhances the aesthetic appeal of the motorcycle by absorbing vibrations at multiple points, particularly beneficial for motorcycles with large engine displacement and fewer cylinders.
Implementation Method 1
the first elastic body absorbs the vibrations. The second elastic body interposed between the light holder and the housing and floatingly supporting the light holder likewise absorbs vibrations
Implementation Method 2
The second elastic body interposed between the light holder and the housing and floatingly supporting the light holder likewise absorbs vibrations. Thus, vibrations become hard to be transmitted from the housing to the light holder and therefore to the light main body
Data Source
Figure 1
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AI summary
A first elastic body (72) is interposed between a rear fender (32) and a license plate light (10), and a second elastic body (96L, 96R) is interposed between a housing (94) and a light holder (92) (light main body (90)) which constitute the license plate light (10). That is, the license plate light (10) is floatingly supported on the rear fender (32), while the light holder (92) (light main body (90)) is floatingly supported on the housing (94).