Pretensioned Showcase Ceiling Beam for Hermetic Glass Display
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Solution Overview
Problem
Showcases for displaying delicate objects face challenges in adequately supporting large ceilings without compromising visual impact or structural integrity, particularly at openable walls, where reinforcing structures may be insufficient or fragile, leading to issues with hermetic closure.
Innovation Solution
A display showcase design featuring a longitudinal tubular beam with a tie rod and strut system that provides pretensioning and compression adjustments, ensuring the beam remains flat under ceiling weight with minimal bulk, using a tie rod in the lower region and a strut above it, along with spacers and adjustable mechanisms to maintain stability and planarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beams or reinforcing structures are used to support the ceiling at the openable wall, then the structural integrity and hermetic closure are improved, but the visual impact is worsened due to the interference with the cultural message transmitted by the objects displayed
Solution Approach 1:
The tie rod is nested inside the tubular element, creating a compact beam structure where the reinforcing components are hidden within the outer shell. This nesting approach provides the necessary structural support while minimizing the visual footprint of the reinforcing structure, as the tie rod and strut system are contained within the tubular element's interior space.
Solution Approach 2:
The reinforcing structure uses different material properties and configurations in different regions: the tie rod is positioned in the lower region to handle tensile forces, while the strut is positioned in the upper region to handle compressive forces. This localized optimization of structural components provides efficient support with minimal material, reducing visual interference while maintaining hermetic closure capability.
2Device complexity
If the size of the reinforcing structures is limited to minimize visual impact, then the visual impact is improved, but the support sufficiency is worsened
Solution Approach 1:
The beam structure is pre-assembled with the tie rod and strut positioned and tensioned before the ceiling is installed. This preliminary configuration ensures that the reinforcing structure is already optimized for load-bearing before the ceiling weight is applied, allowing the minimal necessary structure to be in place without visual interference, while still providing adequate support for large ceilings.
Solution Approach 2:
The beam combines multiple materials and structural elements (tubular element, tie rod, strut) into a composite system that provides enhanced strength-to-volume ratio. This composite approach allows the reinforcing structure to be compact and visually minimal while still providing sufficient support for large glass ceilings through the synergistic combination of tensile and compressive elements.
3Device complexity
If transparent material (glass) is used for the reinforcing structures, then the visual impact is improved, but the structural reliability is worsened due to fragility
Solution Approach 1:
The tubular element serves as an intermediary protective shell that encloses the fragile tie rod and strut components. This outer tubular structure provides mechanical protection and impact resistance, while the internal tie rod-strut system provides the necessary tensile and compressive strength. This intermediary layering allows the use of high-strength materials internally while maintaining a visually minimal external profile.
Solution Approach 2:
The beam employs a composite construction where the tubular element (potentially glass or transparent material) is combined with internal metal or high-strength components (tie rod and strut). This composite approach allows the external visible portion to be transparent and visually minimal, while the internal structural elements provide the necessary strength and reliability, combining the aesthetic benefits of transparency with the mechanical benefits of high-strength materials.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution ensures stable and hermetic closure of the showcase while minimizing visual impact by maintaining the beam's planarity and structural integrity, even with large ceilings, and allows for adjustments to be made with the ceiling already in place, ensuring optimal visibility and object display.
Implementation Method 1
a tie rod, longitudinally extended in the tubular element, in a lower region thereof, coupled to the two head groups and taut therebetween
Implementation Method 2
a strut in the tubular element, extended above the tie rod in an upper region of the tubular element, abutted against the thrust blocks and compressed therebetween
Data Source
AI summary
A display showcase includes a base, fixed side walls supported by the base, at least one openable side wall, an upper horizontal beam mounted at the openable side wall, an upper ceiling mounted on the fixed side walls and on the beam, and a beam, a longitudinal tubular element, two head groups abutted at opposite ends of the tubular element, a tie rod longitudinally extended in the tubular element in a lower region thereof, coupled to the two head groups and taut therebetween.