Pillar Trim Slider Rattle Suppression via Inclined Through-Hole
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Solution Overview
Problem
Existing pillar trim structures with sliders in vehicles generate rattling noise due to vibrations, especially when air conditioner piping is installed behind the pillar trim, as the ribs cannot be made sufficiently high to prevent interference and thus cannot effectively press the slider, leading to rattling and noise.
Innovation Solution
A pillar trim structure with a through-hole entrance cut out in an elongated shape, inclined relative to the pillar trim, and a rib positioned at the entrance to support the slider, allowing it to slide smoothly without rattling, even when space is limited by other components, thus preventing rattling noise and layout interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If ribs are provided on the backside of the pillar trim to press the slider, then rattling noise is suppressed, but interference with other parts such as air conditioner piping occurs
Solution Approach 1:
The invention changes the geometry of the through-hole entrance from a conventional shape to an elongated shape that is inclined relative to the pillar trim. This dimensional change creates additional space in the longitudinal direction, allowing the rib to be positioned higher without interfering with air conditioner piping or other components on the backside of the pillar trim.
Solution Approach 2:
The entrance of the through-hole is designed with an asymmetric inclined shape rather than a symmetric conventional shape. This asymmetric design allows the rib to be positioned at a specific location that effectively presses the slider while maintaining clearance from other parts, resolving the contradiction between noise suppression and layout flexibility.
2Force
If the rib is made sufficiently high to press the slider effectively, then rattling is suppressed, but interference with air conditioner piping occurs
Solution Approach 1:
By inclining the entrance of the through-hole and creating an elongated shape, the invention gains additional spatial dimension. This allows the rib to extend higher in the longitudinal direction to provide sufficient pressing force on the slider while the inclined geometry ensures clearance from air conditioner piping and other components that may be disposed on the backside of the pillar trim.
3Ease of operation
If the slider is allowed to slide freely in the through-hole, then smooth operation is achieved, but rattling noise is generated due to vibrations
Solution Approach 1:
The invention applies local quality by providing the rib at a specific location within the through-hole entrance. The rib creates a localized pressing action on the slider at the entrance region, suppressing rattling noise caused by vibrations, while the rest of the through-hole maintains its open geometry to allow smooth sliding operation of the slider.
Data Source
AI summary
There is provided a pillar trim structure. A plate-shaped slider is configured to slide on a backside of a pillar trim in a longitudinal direction. A tunnel part is provided at an upper end of the backside of the pillar trim and formed with a through-hole. A rib is provided so as to stand at one side of an entrance of the through-hole over the longitudinal direction and inclined so that one edge of the slider gets away from the pillar trim as the slider gets over the rib. The entrance is cut out in an elongated shape at an opposite side and is cut out widely so that the entrance is more inclined with respect to the pillar trim than the slider from a predetermined starting point towards the one side and the entrance abuts on the slider at the starting point.