Vehicle Interior Clip Structure for Anti-Rattle Corner Clamping
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Solution Overview
Problem
Existing vehicle interior clips, such as those used for assist grips, suffer from instability and rattling when subjected to large loads or forces in rotational or prying directions due to insufficient clamping force and lack of effective fall prevention mechanisms.
Innovation Solution
A clip design with multiple engagement portions, including fall prevention claws and engagement claws, positioned to clamp the edges of a rectangular hole at the corners, providing enhanced stability and clamping force through integral formation with a U-shaped body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a single fall prevention claw is used between engagement claws, then the clip structure is simple, but it is difficult to increase clamping force and the clip becomes unstable under rotational or prying loads
Solution Approach 1:
The single fall prevention claw is segmented into multiple fall prevention claws (first and second fall prevention claws) positioned at different locations. This segmentation allows each claw to independently contribute to clamping force, significantly increasing the total clamping force and stability under rotational or prying loads while maintaining a relatively simple overall structure
Solution Approach 2:
Different regions of the clip are given different functions: engagement claws are positioned to clamp the front surface of the panel, while fall prevention claws are positioned to clamp the rear surface. This local differentiation of function allows the clip to simultaneously provide both engagement and fall prevention capabilities with optimized clamping force distribution
2Stability of the object's composition
If engagement portions are not positioned at corner adjacent positions, then the clip structure is simple, but shifting or rattling occurs under excessive force in rotational or prying directions
Solution Approach 1:
The engagement portions are asymmetrically positioned adjacent to the corners of the rectangular hole rather than being symmetrically distributed. This asymmetric positioning at corner adjacent locations provides optimal mechanical advantage for resisting rotational and prying forces, as the corner positions naturally offer greater leverage and stability against such loads
Solution Approach 2:
The engagement portions are pre-positioned adjacent to the corners of the rectangular hole before engagement occurs. This preliminary positioning ensures that when the clip is installed, the engagement claws and fall prevention claws are already optimally positioned to immediately resist any rotational or prying forces that may be applied, preventing shifting or rattling from the outset
Data Source
AI summary
A clip for attaching a vehicle interior component to a rectangular hole provided on a vehicle body panel includes a body to be attached to the vehicle interior component, and two or more engagement portions formed integrally with the body and configured to be pressed against the rectangular hole. The two or more engagement portions protrude on two sides of the body via a gap therebetween and are configured to be arranged in positions adjacent to at least a pair of left and right corners in two pairs of left and right corners of the rectangular hole. Each engagement portion includes a fall prevention claw and an engagement claw for clamping a hole edge of the rectangular hole at an upper end thereof.