Vehicle Connector Sound-Proof Member Design
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Solution Overview
Problem
Connectors used in vehicles, especially those in electric and hybrid vehicles, generate noise due to vibration, which existing vibration-proof technologies fail to address effectively.
Innovation Solution
A connector design incorporating a sound-proof member with a cover and sound absorbing material, along with a fastening mechanism, to absorb and insulate sound generated by vibration, specifically attaching the sound-proof member to the main body's surface where noise is most prominent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a connector is used in a vehicle without additional sound-proofing components, then the device complexity is low, but noise generated from vibration spreads to the surrounding environment
Solution Approach 1:
The sound-proof member is integrated with the connector main body, combining the fastening function and sound-proofing function into a single integrated component. The cover portion wraps around the main body while the sound-absorbing material is embedded within, creating a unified structure that reduces noise without requiring separate attachment components.
Solution Approach 2:
The sound-proof member utilizes composite construction with a cover made of one material and sound-absorbing material embedded within. This composite structure enables the single component to provide both structural coverage and acoustic absorption, effectively reducing noise spread while maintaining structural integrity.
2Object-affected harmful factors
If a sound-proof member is attached to the connector main body, then noise spread is reduced, but the manufacturing process becomes more complex
Solution Approach 1:
The sound-proofing function is merged with the connector main body structure itself. The sound-absorbing material is embedded within the cover portion during manufacturing, eliminating the need for separate sound-proofing attachment steps and simplifying the overall manufacturing process.
3Strength
If the connector main body is made of metal for strength, then structural integrity is improved, but vibration-induced noise generation increases
Solution Approach 1:
The connector employs a composite structure where the main body is made of metal for strength while the sound-proof member attached to it is made of resin with embedded sound-absorbing material. This combination allows the metal main body to maintain structural integrity while the resin cover with sound-absorbing material suppresses vibration-induced noise generation.
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
The solution effectively reduces noise spread from the connector, enhancing quietness in vehicles by minimizing sound emission, particularly beneficial for electric and hybrid vehicles where noise reduction is crucial.
Implementation Method 1
a sound-proof member attached to at least a first face of the main body to absorb sound generated from the main body caused by vibration
Data Source
AI summary
A connector includes a main body supporting a power cable, and a sound-proof member attached by a bolt to the top surface of the main body identified as the sound emitting surface to absorb sound emitted from the main body due to vibration. The main body includes a base provided with bulges in which three power cables are accommodated, respectively, and a lid over the base with power cables accommodated. The sound-proof member is effective as long as it is attached to the side face of the lid where it is expected to readily emit noise, i.e., on one side. The sound proof member can be also attached to the side face of the base. A connector having sound generated from the connector caused by vibration reduced is provided.