Sink Clamp with Binding Spring for Countertop Mounting
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Solution Overview
Problem
Conventional methods for attaching sinks to countertops, especially those made of hard surfaces like granite, are time-consuming and prone to failure due to human error, and often require complex and difficult procedures such as drilling, gluing, or hammering, which can damage the materials and are not easily standardized.
Innovation Solution
A clamping device system that uses a clamp body, binding lip, and clamp screw to securely attach a sink to a countertop by inserting the binding lip into a slot and tightening the clamp screw against the sink's edge, providing a frictional force to resist removal and allowing for one-handed installation without the need for specialized tools or inventory of multiple parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional drilling and epoxy insert methods are used to attach sinks to hard countertops, then the sink can be securely attached, but the installation process becomes time-consuming and complex
Solution Approach 1:
The attachment system is divided into separate functional components: a mounting bracket that attaches to the countertop, a clamp that secures the sink, and a binding mechanism that connects them. This segmentation allows each component to be optimized independently and simplifies installation by eliminating the need for drilling and epoxy work.
Solution Approach 2:
The patent introduces a mounting bracket as an intermediary component between the countertop and the sink clamp. This bracket serves as a mediator that provides secure attachment to the countertop surface without requiring direct drilling into the hard material, thereby reducing installation time and complexity while maintaining reliability.
2Ease of operation
If clips and screws are used to attach the sink, then the sink can be clamped into place, but overtightening may cause the insert to pull out of the counter
Solution Approach 1:
The binding mechanism incorporates a spring element that provides dynamic, self-regulating clamping force. As the binding member is tightened, the spring compresses and maintains optimal pressure on the sink flange without requiring excessive force that could damage the countertop or cause insert failure.
Solution Approach 2:
The spring-based binding mechanism provides inherent feedback through its mechanical properties. The spring rate and compression distance are designed to provide sufficient clamping force while preventing overtightening, as the operator can feel the increasing resistance as the spring compresses, naturally limiting the maximum force applied.
3Ease of operation
If working in the confined space under the counter, then the sink can be attached from below, but attaching screws and clips becomes difficult
Solution Approach 1:
The mounting bracket is designed to be installed from the front or side of the countertop rather than from underneath, utilizing a different spatial dimension for installation. This approach bypasses the confined space problem by accessing the attachment points from areas with better tool access and working space.
Solution Approach 2:
Instead of reaching up from underneath the counter to install fasteners, the system inverts the installation approach by allowing the mounting bracket to be attached from the front or side of the countertop. This reversal of the installation sequence and access direction makes the process much easier to perform in typical kitchen installation scenarios.
4Ease of manufacture
If special studs are glued to the underside of the countertop, then the sink can be held by tightening clips, but the attachment reliability depends solely on gluing which creates problems
Solution Approach 1:
The mounting bracket combines multiple attachment functions into a single integrated component that attaches to the countertop through mechanical means (screws or adhesives on the front/side) while providing mounting points for the sink clamp. This merging eliminates the need for separate glued studs and provides redundant attachment methods for improved reliability.
5Ease of manufacture
If a wooden cradle is built under the countertop, then the sink can rest upon it, but the method is labor intensive and renders the sink irremovable
Solution Approach 1:
The clamping system uses a dynamic, adjustable clamp with a binding mechanism that can be easily tightened or loosened. This allows the sink to be securely attached during normal use but easily removed when needed, unlike a fixed wooden cradle. The spring-based binding provides consistent pressure while maintaining reversibility.
Solution Approach 2:
The patent design facilitates the recovery and reuse of the mounting components. The mounting bracket, clamp, and binding mechanism can be disassembled and reused for future installations, whereas a wooden cradle would be discarded after rendering the sink permanent. This aligns with principles of sustainability and cost-effectiveness.
6Ease of manufacture
If slots are cut into the underside of the countertop for spring clips, then the clips can be hammered into place, but this risks damaging the sink and countertop and is costly
Solution Approach 1:
The mounting bracket is designed to be pre-assembled with the clamp and binding mechanism before installation. The bracket itself serves as the mounting element that attaches to the countertop, eliminating the need to hammer clips into pre-cut slots. This preliminary design integration prevents damage to the sink and countertop by avoiding forceful installation methods.
7Ease of operation
If the clamp screw rotates contact of the screw end face, then torque is transmitted to the sink flange, but this causes the sink to rotate or shift out of position
Solution Approach 1:
The clamp body serves as an intermediary between the clamp screw and the sink flange. The screw threads engage with the clamp body, which then applies pressure through its binding surface to the sink flange. This intermediary arrangement allows torque application for tightening while preventing direct rotational contact that would cause the sink to rotate or shift position.
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 system enables quick, easy, and secure attachment of sinks to countertops, reducing installation time and risk of damage, while allowing for easy removal and accommodating various sink and countertop sizes without requiring extensive tooling or complex procedures.
Implementation Method 1
an optional clamp spring, and a binding lip for insertion into a slot in a surface of the counter
Implementation Method 2
to apply an axial clamping force to the edge of the sink, the clamping force producing a reaction bending moment in the clamp body tending to increase a frictional force between the binding lip and the slot to resist removal of the binding lip from the slot
Data Source
AI summary
A clamping device for mounting a sink to a counter includes a clamp having a clamp body and a binding spring of a flat-profile, bending type (“bending spring”), a binding lip for insertion through a first slot in the bottom surface of the countertop adjacent to the sink, the clamp and binding lip connected to the clamp body and extending away therefrom at least partially over an edge of the sink, and a clamp screw for insertion through a first opening in the clamp body and against a flange of the sink. The clamp screw may be covered by a screw cap, and a solid portion of the binding spring may be disposed between the clamp screw and the sink flange, or an opening in the binding spring may permit the clamp screw to press directly against the sink flange.