Pushbutton Valve Ratcheting Mechanism Reduces Operating Force
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Solution Overview
Problem
Existing pushbutton valve assemblies require significant force to operate, especially under high water pressure, making them unsuitable for children and the elderly, and are prone to damage.
Innovation Solution
A pushbutton valve assembly with a ratcheting mechanism and biasing member that allows for easy operation by using a pushbutton to move the activation assembly downward and upward, applying a ratcheting action to control water flow through steeply and gently sloped edges, and a sealing member to manage flow between inlet and outlet ports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a traditional pushbutton valve is used to regulate water flow under high pressure, then the valve can control large water flows, but it requires great force to operate which damages the valve and is inappropriate for children or the elderly
Solution Approach 1:
The valve incorporates a ratcheting mechanism that converts a small linear pushing force on the pushbutton into a rotational motion that gradually opens the valve. This dynamic mechanism allows the valve to be opened incrementally through repeated small pushes rather than requiring a single large force, making it suitable for children and the elderly while preventing damage to the valve
Solution Approach 2:
The activation assembly acts as an intermediary between the user's pushbutton input and the valve's flow control function. It translates the user's small pushing force into the mechanical motion needed to rotate the valve body and control water flow, amplifying the user's input force through the ratcheting mechanism
2Ease of operation
If a traditional pushbutton valve is used, then it can control water flow, but it requires complex components and mechanisms that increase device complexity
Solution Approach 1:
The patent merges the pushbutton actuation mechanism with the valve rotation mechanism into a single integrated activation assembly. The pushbutton, activation assembly, and ratcheting mechanism work as one unified system where the pushbutton directly drives the ratcheting mechanism which in turn rotates the valve body, eliminating the need for separate complex control components
Solution Approach 2:
The activation assembly serves multiple functions simultaneously: it provides the pushing interface for the user, incorporates the ratcheting mechanism for force multiplication, and directly connects to the valve body for rotation control. This multi-functionality reduces the overall number of components needed in the valve system
3Ease of operation
If a ratcheting mechanism is added to reduce operating force, then ease of operation improves, but the number of components increases
Solution Approach 1:
The ratcheting mechanism is nested within the activation assembly which is itself nested within the valve body structure. The pawl and ratchet teeth are integrated into the activation assembly components rather than being separate external mechanisms, allowing the ratcheting function to be achieved with minimal additional components that are housed within existing structural elements
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 enables easy, reliable, and stable operation with reduced component count, allowing for one-hand control of large and small water flows, and is suitable for various user groups, including children and the elderly, while minimizing resistance and ensuring easy installation.
Implementation Method 1
a biasing member anchored between the body and the activation assembly; wherein a pressing of the pushbutton moves down the activation assembly to cause the ratcheting subassemblies to apply a ratcheting action in a downward direction, thereby rotating the activation assembly a first angle, causing the ratcheting mechanism to apply a ratcheting action in the downward direction, and compressing the biasing member; and wherein a releasing of the pushbutton moves up the activation assembly and rotates the activation assembly a second angle by expanding the biasing member
Data Source
AI summary
A pushbutton valve assembly is provided with a body including a space; a control assembly including a pushbutton, a connection subassembly, and two ratcheting subassemblies; an activation assembly having one end secured to the pushbutton, the activation assembly disposed through the connection subassembly to have the other in the space, and the activation assembly including a ratcheting mechanism; and a biasing member anchored between the body and the activation assembly. A pressing of the pushbutton moves down the activation assembly to cause the ratcheting subassemblies to apply a ratcheting action in a downward direction, thereby rotating the activation assembly a first angle, causing the ratcheting mechanism to apply a ratcheting action in the downward direction, and compressing the biasing member. A releasing of the pushbutton rotates the activation assembly a second angle, thereby re-positioning the activation assembly and the control assembly, and increasing or decreasing flow.