A-Pillar Lining Fixing Support for Dashboard Crossmember
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Solution Overview
Problem
Existing methods for fixing a dashboard crossmember to a motor vehicle's front pillar lining lack rigidity and are costly, while simpler solutions restrict stamping possibilities, limiting their effectiveness.
Innovation Solution
A fixing support comprising a shaped part and an insert with a half-shell design, where the insert can be welded, glued, or riveted to the lining, providing a hollow body with tapping means for securing the crossmember, enhancing rigidity without compromising stamping possibilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a welded box is interposed on the front pillar liner to fix the dashboard cross member, then the fixing rigidity is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The fixing support is divided into two separate components: a shaped part integrated into the front pillar liner and a separate insert component. This segmentation allows each part to be optimized independently - the shaped part can be stamped with the liner while the insert can be separately manufactured with threading and fixing features, reducing overall complexity compared to a welded box structure.
Solution Approach 2:
The insert is positioned within the shaped part of the liner to form the fixing support. The insert fits into a cavity or recess in the shaped part, creating a nested arrangement where the smaller insert component is housed within the larger shaped part structure, eliminating the need for external welded boxes.
2Ease of manufacture
If the dashboard cross member is fixed directly to the front pillar lining with a stamped area, then the manufacturing cost is reduced, but the stamping possibilities are limited
Solution Approach 1:
By separating the fixing support into a shaped part and an insert, the shaped part can be stamped with the front pillar liner using conventional stamping techniques, while the insert can be separately manufactured with more complex features like threading. This segmentation removes the limitation that prevented direct stamping of threaded fixing features.
Solution Approach 2:
The insert acts as an intermediary component that provides the threading and fixing features that cannot be directly stamped into the liner. It mediates between the stamped shaped part and the dashboard cross member, enabling versatile fixing options while maintaining stamping feasibility for the main liner structure.
3Strength
If the insert thickness is increased to 1-3.5 mm for improved rigidity, then the fixing support strength is improved, but the mass of the lining increases
Solution Approach 1:
The increased thickness of the insert (1-3.5 mm) is applied locally only at the fixing support location where high strength is needed for dashboard mounting, rather than increasing the thickness of the entire front pillar liner. This localized quality enhancement provides the necessary fixing support strength while minimizing the overall mass increase of the lining.
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 offers a cost-effective and rigid mounting bracket that maintains the geometric integrity of the front door rebate, improving the dynamic behavior of the dashboard crossmember during impacts without significant mass or size increase.
Implementation Method 1
The insert may be welded and/or glued and/or riveted to the liner
Implementation Method 2
The insert may be welded and/or glued and/or riveted to the liner
Implementation Method 3
The insert may be welded and/or glued and/or riveted to the liner
Data Source
Figure 1~2
AI summary
The invention relates to a lining 3 of a front foot 2 of a motor vehicle 1, comprising a fixing support 10 for fixing a dashboard crossmember of the motor vehicle 1 onto the lining 3, characterized in that the fixing support 10 comprises a formed part 11 of the lining 3 and an added part 12 each having a half-shell.