Tilting Display Panel Support Structure for Vibration Noise Suppression
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Solution Overview
Problem
Vibrations from vehicle travel cause abnormal sounds in navigation devices due to increased moment and bending of arms supporting the display panel during posture changes, leading to load application and noise generation.
Innovation Solution
The first movement part is configured to move further forward after contacting a support part with a bent corner, and a coupling pin engages with the sliding path, enhancing rigidity and stability during posture changes, thereby suppressing bending and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the movement part moves forwards to transition the display unit to the inclined state, then the display unit can be tilted for medium insertion, but the moment of the arm increases and the movement part bends under vehicle vibrations, causing abnormal sounds
Solution Approach 1:
The support part is positioned to contact the movement part before the display unit reaches the fully inclined state. This preliminary contact provides early stabilization, reducing the moment arm and preventing excessive bending of the movement part during the tilting operation, thereby suppressing abnormal sounds caused by vehicle vibrations.
Solution Approach 2:
The support part acts as an intermediary element between the movement part and the fixed structure. By introducing this intermediate support, the system distributes the mechanical load and reduces the bending stress on the movement part during tilting, eliminating the source of vibration-induced abnormal sounds while maintaining operational ease.
2Adaptability or versatility
If the arm supports the display panel during posture change, then the display unit can transition between fixed and inclined states, but the arm bends under the combined load of the display panel weight and vehicle vibrations, generating abnormal sounds
Solution Approach 1:
The support part provides preliminary structural reinforcement to the arm during the posture transition. By contacting the movement part early in the tilting process, it creates an additional support reaction that counteracts the bending moment caused by the display panel weight and vehicle vibrations, maintaining arm rigidity throughout the adaptive posture change.
Solution Approach 2:
The support part serves as a preemptive cushioning element that absorbs and distributes the mechanical stresses before they can cause excessive arm bending. This prior support structure prevents the arm from undergoing large deformations under combined loads, thereby maintaining strength and preventing abnormal sounds during versatile posture transitions.
3Ease of operation
If the movement part is designed to move freely for posture transition, then the tilt operation is smooth, but the movement part bends excessively under vehicle vibrations in the inclined state, causing abnormal sounds
Solution Approach 1:
The support part is strategically positioned to engage the movement part during the posture transition process. This preliminary engagement maintains smooth tilting operation while progressively stabilizing the movement part as it approaches the inclined state, preventing excessive bending and abnormal sounds without compromising operational smoothness.
Solution Approach 2:
The support system transitions from a static to a dynamic configuration during posture change. The support part is designed to contact the movement part at the appropriate moment in the tilting sequence, providing dynamic stabilization that maintains smooth operation during transition while ensuring stability in the final inclined state, thereby preventing vibration-induced abnormal sounds.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A display panel (2) can transition between a fixed state and an inclined state, in accordance with linear reciprocal movement relative to a main body section (1) of a main slider (31). When the main slider (31) travels a prescribed distance in the forward direction from a position in the fixed state, a motion link (41) comes in contact with the main slider (31).