Scale Foot Cavity Inserts for Accurate Weighing on Carpet
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Solution Overview
Problem
Existing bathroom scales or personal scales struggle to provide accurate weight measurements on carpeted floors due to sinking and inadequate fixation, leading to unreliable and less robust performance.
Innovation Solution
A weighing device with feet that incorporate open cavities to receive carpet pads, allowing easy switching between hard and carpeted floors, enhancing fixation and stability through a carpet pad design with an insert and anti-slip cover, ensuring precise weight measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive tape is used to fix carpet pads to feet, then carpet pads can be attached to feet, but the fixation quality decreases with time and multiple installation/removal cycles are not enabled
Solution Approach 1:
The foot is divided into two parts: the foot body and the insert that can be independently removed and replaced. This segmentation allows the insert to be exchanged without damaging the foot body, enabling multiple installation and removal cycles while maintaining reliable fixation.
Solution Approach 2:
The insert acts as an intermediary component between the foot and the carpet pad. It provides a reusable interface that can be repeatedly attached and detached, solving the problem of adhesive tape degradation over time while maintaining consistent fixation quality.
2Reliability
If adhesive tape is used to fix carpet pads to feet, then carpet pads can be attached to feet, but anti-slippering rubber cannot be used on the bottom of the feet
Solution Approach 1:
The system dynamically adapts to different floor types by allowing the user to attach carpet pads when on carpeted floors and remove them when on hard floors. The insert provides a mechanical interface that enables this dynamic configuration change, enhancing floor type adaptability while maintaining reliable fixation when needed.
3Reliability
If carpet pads are fixed using adhesive tape, then carpet pads can be attached to feet, but the insert cannot exert greater pressure along greater contact distance
Solution Approach 1:
The insert extends along the foot axis, providing a longer contact distance in the longitudinal dimension. This dimensional extension allows the insert to exert pressure along a greater contact distance, significantly improving fixation strength compared to surface-level adhesive tape application.
4Reliability
If surrounding pad design is used, then carpet pads can surround the feet, but the diameter is larger leading to increased tolerance margins and reduced production precision
Solution Approach 1:
Instead of having the carpet pad surround the foot externally, the insert is placed inside the foot's cavity. This inversion reduces the external diameter requirements and allows for tighter tolerances, significantly improving manufacturing precision while maintaining adequate fixation coverage through the internal cavity engagement.
Data Source
AI summary
A weighing device configured to be placed on a floor and to measure at least the weight of a user or an object, the weighing device including a main body and at least one foot protruding out of the main body along a foot axis, the foot being configured to be on the floor, wherein the foot includes an open cavity. There is also provided a weighing system including a weighing device and a carped pad to be inserted in the open cavity.