Balustrade Blocking Member Prevents Climbing While Maintaining Ventilation
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Solution Overview
Problem
Existing balcony balustrades face challenges in preventing children from climbing over while ensuring sufficient ventilation, as increased ventilation gaps pose a risk of accidental falls, and conventional countermeasures like perforated metal sheets reduce ventilation efficiency.
Innovation Solution
A fence design featuring a plurality of posts with plate members spaced vertically and a blocking member arranged between them, where the blocking member's lower end is positioned upward from the plate member, creating a gap that prevents foot entry, and is shaped to incline at specific angles to deter both foot and finger insertion, ensuring ventilation while preventing climbing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the space between plate members is increased to ensure sufficient ventilation, then ventilation performance is improved, but the risk of clambering over the fence increases
Solution Approach 1:
A blocking member is introduced as an intermediary element between the plate members. This blocking member has a lower end that is spaced upward from the lower plate member, creating a lower gap that prevents foot insertion while still allowing air to pass through. The blocking member thus mediates between the need for ventilation and the need to prevent clambering.
Solution Approach 2:
The blocking member creates a localized restriction (lower gap) at a specific position between the plate members. This lower gap has dimensions specifically designed to prevent foot insertion while maintaining overall ventilation. The local modification does not compromise the global ventilation performance of the entire fence structure.
2Object-affected harmful factors
If a sheet-like member with pores is used to close the space and prevent clambering, then safety is improved, but ventilation performance decreases
Solution Approach 1:
Instead of using a continuous sheet-like member that would block ventilation, the invention segments the blocking function into a discrete blocking member with a specific gap. The lower gap between the blocking member and the lower plate member is sized to prevent foot insertion but still allows air passage. This segmentation maintains ventilation while achieving clambering prevention.
Solution Approach 2:
The blocking member with the lower gap effectively creates a porous structure that allows air flow while preventing solid object (foot) passage. The gap dimensions are carefully controlled to be smaller than the thickness of a foot tip but large enough to allow sufficient air passage, mimicking the function of porous materials.
Data Source
AI summary
Provided is a fence which can prevent a person from clambering over the fence while ensuring sufficient ventilation. The fence includes: a plurality of posts; a pair of plate members extending in a horizontal direction and spaced away from each other in a vertical direction; and a blocking member arranged in the space between the plate members for keeping a foot of a person from entering the space between the plate members to prevent the person from clambering over the fence, wherein a lower end of the blocking member is spaced upward from the plate member at a lower position, and defines a lower gap against an upper surface of the plate member at the lower position, the lower gap having such a dimension as to keep a tip of the foot of the person from entering the lower gap.