Composite Sink Apron Structure for Stable Flush Installation
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Solution Overview
Problem
Existing cast sinks made of composite materials face challenges in installation stability and aesthetic integration with worktops, particularly due to the need for additional support structures and visible edges.
Innovation Solution
The integration of an apron extending perpendicularly from the front wall edge, which conceals the sink's installation edges and provides a visually appealing cover, allowing for secure and closer placement to the worktop or base unit, with optional corner wrapping and tapered thickness for ease of demolding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sink is installed with traditional rim support structures, then installation stability is achieved, but the visible edges and support structures compromise aesthetic integration with the worktop
Solution Approach 1:
The apron extends vertically downward from the front rim section, creating a new dimensional element that serves dual purposes: it provides structural support for installation stability while simultaneously concealing the rim edge for aesthetic integration. This vertical extension transforms the traditional horizontal rim support into a three-dimensional solution that addresses both stability and appearance requirements.
Solution Approach 2:
The apron acts as an intermediary element between the rim section and the base cabinet/worktop. It mediates the connection by providing a concealed support surface that transfers loads while hiding the structural transition, thus resolving the conflict between visible support structures and aesthetic integration.
2Shape
If the sink is positioned closer to the front edge of the worktop, then aesthetic integration and space utilization are improved, but installation stability is compromised due to reduced support
Solution Approach 1:
By extending the apron vertically downward from the front rim, the invention creates an additional support dimension that compensates for the reduced horizontal support when the sink is positioned closer to the front edge. This vertical support element maintains installation stability while enabling the desired aesthetic positioning.
Solution Approach 2:
The apron is pre-formed as an integral part of the sink body during manufacturing, providing built-in support structure that is ready to bear loads before installation. This preliminary structuring ensures that even when positioned at the front edge with minimal worktop support, the sink maintains installation stability through its own integrated support mechanism.
3Ease of manufacture
If the apron has uniform thickness, then manufacturing is simplified, but demolding becomes difficult due to geometric constraints
Solution Approach 1:
The apron features non-uniform thickness with a tapered profile, where the thickness varies along the vertical extent. This local variation in geometry creates a draft angle that facilitates demolding while maintaining structural integrity and aesthetic appearance in the visible regions. The thickness is optimized locally to balance manufacturing ease with demolding requirements.
Data Source
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Figure 5~6
AI summary
Cast body in the form of a sink (2) comprising a basin (3) with a base (4), a back wall (5), a front wall (6) and two side walls (7) connecting these, as well as a circumferential rim (9) extending to the side of the basin (3) consisting of flat rim sections (10, 11, 12) extending in a straight line from the side edges of the back wall (5), the side walls (7) and the front wall (6), wherein the sink (2) consists of a composite material with a cured polymeric binder and filler particles embedded therein, wherein at least to the rim section (11) of the front wall (6) an apron (13) adjoins it, which at least partially overlaps the height of the front wall (6) and extends with its outer side (17) at right angles from the outer side (18) of the rim section (11) and in a straight line to its end. In preferred embodiments, the sink (2) is made of a bio-based composite material.