Bimetallic Gas Spring Valve Assembly for Temperature Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Temperature compensating valves in gas springs for vehicles face challenges in effectively managing pressure variations due to ambient temperature changes, leading to inconsistent gas release rates, which can result in suboptimal door closure damping.
Innovation Solution
A temperature compensating valve assembly featuring a bimetallic spring that deforms from a closed to an open position in response to temperature, integrated within a single-piece valve body with retainers or heat stakes to ensure precise blocking and unblocking of airflow, allowing for adaptive gas release based on ambient temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a traditional multi-component valve assembly is used, then assembly flexibility is improved, but device complexity and potential leak points increase
Solution Approach 1:
The patent combines multiple valve components (valve body, retainers, sealing surfaces, and mounting features) into a single integrated valve assembly. This merging of components reduces the total number of parts, eliminates assembly steps, and removes potential leak points while maintaining all necessary functions through integral design features.
2Ease of repair
If multiple separate components are used in the valve assembly, then ease of repair is improved, but reliability decreases due to more potential failure points
Solution Approach 1:
The valve body and retainers are formed as a single integral component with built-in sealing surfaces and retention features. This eliminates the interfaces between separate components where leaks could occur, thereby improving sealing integrity and reliability while maintaining the ability to replace the entire valve assembly as a unit.
3Device complexity
If a single-piece valve body is used, then device complexity is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The valve assembly is manufactured as a single piece with all features (valve body, retainers, sealing surfaces, and mounting interfaces) integrated into one component. This approach reduces device complexity by eliminating multiple parts and assemblies, while the manufacturing process is designed to achieve the required precision for the integral features.
4Adaptability or versatility
If traditional valve designs are used, then adaptability to different temperatures is limited, but device complexity is lower
Solution Approach 1:
The valve incorporates a temperature-compensating mechanism that automatically adjusts the valve opening degree based on temperature changes. This allows the valve to adapt to different operating temperatures and maintain proper gas flow control, with the compensation feature integrated into the valve's mechanical design rather than requiring external control systems.
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 ensures consistent and adaptive gas release, maintaining optimal door closure damping across varying temperatures with a simplified, single-component design that reduces assembly complexity and enhances reliability.
Implementation Method 1
a bimetallic spring that deforms from a closed position to an open position in response to temperature
Implementation Method 2
the resilient retaining snaps configured to move radially outward as the bimetallic spring is pressed into the open end and to snap radially inward to engage and retain the second side of the bimetallic spring
Implementation Method 3
the integral heat stakes are melted after the bimetallic spring is placed inside the open end to deform and thereby retain the bimetallic spring between the support surface and the heat stakes
Data Source
AI summary
A temperature compensating valve assembly is provided that includes a bimetallic spring that deforms from a closed position to an open position in response to temperature, and a single-piece valve body having an aperture therethrough and having an open end for receiving the bimetallic spring. The single-piece valve body includes integral retainers for retaining the bimetallic spring in the open end in a location such that the aperture is blocked by the bimetallic spring when in the closed position and is not blocked by the bimetallic spring when in the open position.