Segmented Soundproof Cover Structure for Lightweight Sheet Positioning
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Solution Overview
Problem
Existing soundproof covers for vehicles with rigid cover bodies increase weight and make it difficult to reliably position sound-absorbing materials, as omitting the cover body may compromise the material's positioning on the target object.
Innovation Solution
A soundproof cover design featuring a sound-absorbing sheet with a reinforcing member that includes elongate first and second reinforcing portions, allowing the sheet to be positioned on the target object while minimizing weight by exposing parts of the sheet, thus reducing the overall weight of the cover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a highly rigid cover body is used in the soundproof cover, then the sound absorbing material can be reliably positioned on the target object, but the mass of the soundproof cover increases
Solution Approach 1:
The reinforcing member is divided into multiple elongate members (first reinforcing portion and second reinforcing portion) that are disposed at different positions. This segmentation allows the sound absorbing sheet to be reliably positioned without requiring a single large rigid cover body, thereby reducing overall weight while maintaining positioning reliability.
Solution Approach 2:
Instead of making the entire cover body highly rigid, the invention applies local reinforcement by disposing elongate reinforcing portions at specific strategic positions. This localized approach provides sufficient structural support for positioning the sound absorbing sheet while minimizing the overall mass of the soundproof cover.
2Weight of stationary object
If the cover body is omitted to reduce weight, then the mass of the soundproof cover decreases, but it becomes difficult to reliably position the sound absorbing material on the target object
Solution Approach 1:
The reinforcing member acts as an intermediary structure between the sound absorbing sheet and the target object. It provides the necessary mechanical support and positioning function without requiring a full cover body, enabling reliable positioning while maintaining weight reduction.
Solution Approach 2:
The invention transitions from a two-dimensional sheet structure to a three-dimensional structured assembly by adding elongate reinforcing portions. This dimensional enhancement provides structural integrity and positioning capability without the need for a complete rigid cover body.
3Reliability
If the reinforcing member covers the entire surface of the sound absorbing sheet, then the positioning is more reliable, but the weight of the soundproof cover increases
Solution Approach 1:
The reinforcing member is applied partially rather than completely covering the sound absorbing sheet. The elongate reinforcing portions are disposed at specific strategic positions that provide sufficient positioning reliability without the excessive weight that would result from complete surface coverage.
Data Source
AI summary
A soundproof cover which covers a target object is provided with: a sound absorbing sheet which is formed in a planar shape by means of a sound absorbing material and which covers the surface of the target object; and a reinforcing member which is disposed in a position engaging with engaged portions of the target object, and which positions the sound absorbing sheet with respect to the target object with at least a portion of the sound absorbing sheet exposed. The reinforcing member is provided with: a first reinforcing portion, which is an elongate member and which is disposed in a position engaging with a first engaged portion of the target object; and second reinforcing portions, which are elongate members and which are disposed in different positions to the first reinforcing portion.