Stacked Composite Interior Component Noise Reduction
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Solution Overview
Problem
Conventional interior components with projections generate noise due to rapid pressure changes when projections bend and contact each other, leading to inconsistent bending and noise upon release.
Innovation Solution
A stacked composite interior component with a projection and a close contact restricting portion, where the projection bends and the close contact restricting portion, such as a protruding portion or recess, is arranged to prevent immediate contact between the projection and the opposing surface, allowing for controlled deformation and reduced pressure changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the projections are allowed to bend and contact the first member, then soft tactile sensation is achieved, but noise is generated due to rapid pressure changes
Solution Approach 1:
The patent introduces a cushioning layer between the projection and the first member that deforms beforehand to absorb impact energy. This cushioning layer prevents direct contact between the projection and the first member, thereby eliminating the rapid pressure changes that cause noise while still providing soft tactile sensation.
Solution Approach 2:
The patent introduces an intermediary element (cushioning layer or damping material) between the projection and the first member. This intermediary absorbs the impact and prevents direct contact, thereby eliminating noise generation from rapid pressure changes while maintaining the soft tactile sensation function.
2Stability of the object's composition
If adjacent projections bend in the same manner to restrict close contact, then bending consistency is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies local quality by providing different structural characteristics to different parts of the projection array. Specifically, certain projections are given enhanced stability features (such as increased height, different cross-sectional shape, or reinforced base) while others maintain standard design, allowing consistent bending behavior without requiring complex manufacturing processes for all projections.
Solution Approach 2:
The patent utilizes parameter changes by varying geometric parameters (such as projection height, base width, or material density) of specific projections to achieve desired bending consistency. This allows control over bending behavior through simple dimensional adjustments rather than complex structural modifications.
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 reduces noise generation by preventing close contact between the projection and the opposing surface, softening the tactile sensation, and allowing for adjustable tactile feedback based on the distance between the projection and the restricting portion.
Implementation Method 1
The projection projects from an opposing surface opposed to the first member and is deformed while bending in a falling manner by contacting the first member
Implementation Method 2
the projections are elastically restored. However, this instantaneously cancels the close contact between the projections and the cover, thus generating noise
Data Source
AI summary
An interior component includes a base member and an outer member, which is stacked on the base member. The outer member is provided with projections and protruding portions. The projections project from an opposing surface, which is opposed to the base member. The projections are deformed while bending in a falling manner in specific directions by contacting the base member. The protruding portions protrude from the opposing surface and are provided on the paths along which the projections are deformed.