Floor Panel Curved Opening Press Drawing
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Solution Overview
Problem
Conventional free access floor panels face challenges in forming rectangular-shaped openings using thin steel plates, leading to material cost increases and weight issues due to insufficient plate extension and potential cracking, which exposes reinforcing members and poses a fire risk.
Innovation Solution
The design features a floor panel with upper and lower members formed as box shapes, where the opening portion is curved, allowing for easier press drawing and reducing material costs by avoiding thin steel plate limitations, with internal corner portions curving inward to prevent cracking and allow for a reinforcing member within the internal space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a rectangular-shaped opening portion is formed by press drawing process using thin steel plate, then the floor panel can be manufactured, but the steel plate cannot extend sufficiently and cracks are generated
Solution Approach 1:
The opening portion is designed with curved shapes at its corners instead of sharp rectangular angles. This curvature allows the thin steel plate to extend smoothly during press drawing without concentrating stress at corner points, preventing cracks while maintaining the desired opening shape.
Solution Approach 2:
The design changes the geometric parameters of the opening portion by introducing curved corners with specific radius values. This parameter modification enables the press drawing process to successfully form the opening in thin steel plates by altering the stress distribution pattern during forming.
2Quantity of substance
If thin steel plate is used for floor panel, then material cost is reduced, but the plate cannot extend sufficiently and cracks are generated
Solution Approach 1:
By curving the corners of the opening portion, the design enables thin steel plates to be used without cracking. The curved geometry distributes the forming stresses evenly, allowing thin plates to extend sufficiently during press drawing while maintaining structural integrity and reliability.
3Ease of manufacture
If rectangular opening is formed in thin steel plate, then the opening can be created, but reinforcing members are exposed and fire risk increases
Solution Approach 1:
The curved corner design ensures that the opening portion can be formed in thin steel plates without cracking or exposing reinforcing members. This maintains the protective enclosure, preventing fire risk while still achieving the desired opening for utility installation.
Data Source
AI summary
The invention provides a floor panel which can reduce a material cost and achieve a weight saving, by easily carrying out a press drawing process. In a floor panel in which an upper member and a lower member are joined in their peripheral edge portions and an internal space is formed in an inner portion of the floor panel, an opening portion intruding approximately as a rectangular shape into an inner side of the floor panel is formed in a side plate portion of each of the upper member and the lower member, and a shape of the opening portion is formed as such a curved shape that two internal corner portions intrude into the inner side of the floor panel than the other approximately linear portions than the internal corner portions, in a whole or a part of a horizontal cross section.