Vehicle Woofer Mounting Structure with Segmented Reinforcement
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Solution Overview
Problem
The existing mounting structure of a woofer in vehicles has a low insulation effect against vibrations, which is exacerbated as the woofer's power increases, leading to inefficiencies in sound distribution and potential rattle noise.
Innovation Solution
A mounting structure that incorporates a ring-shaped reinforcement member with a center hole, featuring a stair gap along its border and convex-shaped beads, combined with a panel to create a spaced arrangement between first and second bending members, enhancing rigidity and eliminating the need for a mass damper, allowing for a thinner panel and reduced weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a traditional reinforcement member with a curved border is installed to increase bending rigidity, then the structural strength is improved, but the insulation effect against vibrations deteriorates as woofer power increases
Solution Approach 1:
The reinforcement member is divided into multiple segments along its circumference, creating gaps between adjacent segments. This segmentation allows the structure to maintain rigidity while reducing vibration transmission, as the gaps interrupt the continuous path for vibration propagation while the overall ring structure preserves bending stiffness.
Solution Approach 2:
The reinforcement member features a nested structure with an inner curved surface and an outer curved surface, where the gaps are formed between corresponding points on these surfaces. This nested configuration allows the reinforcement member to maintain its structural integrity while incorporating vibration-damping gaps, effectively addressing both rigidity and vibration insulation requirements.
2Object-affected harmful factors
If a mass damper is installed to prevent vibrations from being conveyed to the car frame, then vibration insulation is improved, but the device complexity and weight increase
Solution Approach 1:
The invention extracts and eliminates the need for separate mass dampers by integrating vibration insulation functionality directly into the reinforcement member's structure. The gaps formed in the reinforcement member serve the dual purpose of maintaining rigidity and providing vibration insulation, thereby removing the need for additional mass damper components and simplifying the overall mounting structure.
Solution Approach 2:
The reinforcement member is designed to perform multiple functions simultaneously: it provides structural reinforcement to increase bending rigidity, acts as a vibration insulation barrier through its segmented structure with gaps, and eliminates the need for separate mass dampers. This multi-functionality reduces device complexity while maintaining effective vibration control.
3Strength
If the panel thickness is increased to improve rigidity at the woofer installation point, then the structural strength is improved, but the vehicle weight increases and fuel efficiency deteriorates
Solution Approach 1:
Instead of increasing the overall panel thickness, the invention applies local reinforcement through the segmented reinforcement member installed at the specific woofer mounting location. This localized approach provides the necessary rigidity only where needed, without increasing the weight of the entire panel, thereby maintaining fuel efficiency while ensuring structural strength at the installation point.
Data Source
AI summary
A mounting structure of a woofer for a vehicle may include a reinforcement member combined with a panel and having a flat base surface and a stepped base surface, a first bending member disposed between the flat base surface and the stepped base surface, and the panel formed of an upper part and a lower part, a second bending member being formed between the upper part and the lower part, wherein the reinforcement member may be combined with the panel in a way that the flat base surface of the reinforcement member may be in contact with the upper part of the panel and the stepped base surface of the reinforcement member may be in contact with the lower part of the panel, and wherein the first bending member and the second bending member may be spaced apart to form a space therebetween.