Laminated Plate Diagonal Chamfer Edge Design
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Solution Overview
Problem
Conventional laminated glass designs, particularly for vehicle windows, face issues where the thinner glass plate is prone to breaking when objects collide or when foreign substances are trapped, leading to potential damage and aesthetic issues.
Innovation Solution
A laminated plate design featuring glass plates of different thicknesses bonded with an intermediate film, where the thicker plate has a linear chamfered edge that extends diagonally, positioning the thinner plate on the inner side of the chamfered line, reducing the likelihood of contact and breakage, and incorporating a shielding layer to prevent irregular reflections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the thinner glass plate is positioned at the outer periphery to reduce weight and cost, then weight and manufacturing cost are reduced, but the thinner plate is prone to breaking when objects collide or foreign substances are trapped
Solution Approach 1:
The patent applies local quality by creating a chamfered portion only at the outer periphery of the first glass plate where the thinner second glass plate is positioned. This chamfered structure locally reinforces the area prone to collision and foreign object entrapment, allowing the thinner plate to maintain both weight reduction and improved breakage resistance at critical locations.
Solution Approach 2:
The chamfered portion is formed in advance on the first glass plate before bonding with the second glass plate. This preliminary action prepares the structure to prevent breakage before the actual use scenario occurs, ensuring that when collisions or foreign object entrapment happens, the reinforced chamfered area already exists to protect the thinner glass plate.
2Weight of moving object
If the thinner glass plate is used to reduce weight, then weight is reduced, but the likelihood of breakage during collision increases
Solution Approach 1:
The chamfered portion creates a local structural enhancement at the outer periphery where the thinner second glass plate is positioned. This localized reinforcement improves collision resistance specifically at the vulnerable edge areas without requiring the entire thinner plate to be stronger, thus maintaining weight reduction while improving collision resistance where needed.
3Ease of manufacture
If the thinner glass plate is positioned at the outer periphery, then manufacturing cost is reduced, but aesthetic appearance deteriorates due to irregular reflections from sharp edges
Solution Approach 1:
The chamfered portion is applied locally at the outer periphery of the first glass plate, creating a smooth transition area that eliminates sharp edges only where the thinner second glass plate is positioned. This local treatment improves aesthetic appearance and prevents irregular reflections at the vulnerable outer edges while maintaining cost-effectiveness by not requiring treatment of the entire glass assembly.
Data Source
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AI summary
A laminated plate includes first and second plates bonded to each other via an intermediate film. The laminated plate further includes a first main surface of the first plate and a fourth main surface of the second plate arranged on sides opposite to the intermediate film, respectively; and a second main surface of the first plate and a third main surface of the second plate being in contact with the intermediate film, respectively. A thickness of the first plate is thicker than a thickness of the second plate. In at least a part of an outer periphery of the laminated plate, on a cross-sectional surface orthogonal to the outer periphery, the first plate has a first linear chamfered part which extends diagonally to the second main surface, and the second plate is located on an inner surface side of an extended line of the first linear chamfered part.