Sound Absorbing Member Mount Assembly for Precise Vehicle Alignment
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Solution Overview
Problem
Existing sound absorbing members in vehicles are prone to misalignment due to mounting tolerances, leading to increased waste and costs from cut-out holes, and require precise positioning marks for accurate installation.
Innovation Solution
A sound absorbing member mount assembly featuring a vehicular interior component with protrusions and a sound absorbing member with slits and positioning portions that are bent and supported by the protrusions, allowing for accurate positioning and reduced waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If holes are made in the sound absorbing member to insert clip bosses, then the sound absorbing member can be mounted on the vehicular interior component, but the mounting position accuracy deteriorates due to tolerances requiring the hole size to be larger than the clip boss size
Solution Approach 1:
The sound absorbing member is divided into multiple positioning portions that can be bent to different positions. These positioning portions are inserted into corresponding positioning holes in the vehicular interior component, allowing each positioning portion to independently ensure accurate positioning while maintaining ease of manufacture through modular design
Solution Approach 2:
The positioning portions are designed to be bendable, transforming from a static structure to a dynamic one. This allows the positioning portions to be bent to predetermined positions during assembly, ensuring accurate mounting position while maintaining manufacturing flexibility and ease of installation
2Ease of manufacture
If holes are cut out from the sound absorbing member, then clip bosses can be inserted for mounting, but material waste increases and manufacturing cost rises
Solution Approach 1:
Instead of cutting out complete holes, the invention uses segmented positioning portions that are bent to form insertion portions. These positioning portions are distributed around the periphery of the sound absorbing member, allowing clip bosses to be inserted through the bent portions without removing significant material, thereby reducing waste while maintaining mounting capability
Solution Approach 2:
The invention recovers material that would otherwise be discarded by bending portions of the sound absorbing member to form positioning portions. Instead of cutting out holes and discarding the removed material, the same material is reshaped and reused as positioning structures, eliminating waste while maintaining the mounting function
3Manufacturing precision
If positioning marks are added to ensure correct alignment, then mounting position accuracy improves, but device complexity and manufacturing cost increase
Solution Approach 1:
The sound absorbing member performs its own positioning function through the bent positioning portions that automatically align with the positioning holes in the vehicular interior component. The positioning portions themselves serve as the positioning mechanism, eliminating the need for separate positioning marks or additional positioning devices, thereby reducing complexity while maintaining accuracy
Data Source
AI summary
A sound absorbing member mount assembly includes a vehicular interior component and a sound absorbing member. The vehicular interior component includes a protrusion and the protrusion protrudes from a vehicular exterior side surface of the vehicular interior component and includes a support portion having a flat surface. The sound absorbing member is disposed on the vehicular interior component and includes a slit and a positioning portion that is adjacent to the slit. The positioning portion is to be bent and project toward a vehicular exterior side and is supported by the support portion of the protrusion. With the positioning portion being supported by the support portion, the sound absorbing member is positioned with respect to the vehicular interior component.