Lid Holder Spring Pack With Coupling-Guided Anti-Buckling Springs
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Solution Overview
Problem
Existing spring assemblies for flap holders in furniture face challenges in guiding springs reliably over their intended travel, leading to a risk of buckling, especially when the holders are far apart.
Innovation Solution
The use of at least two springs arranged in series with a coupling piece that provides lateral guidance through spring guides, ensuring the springs are supported across their entire length and preventing buckling, while the coupling piece is self-centering and clamped between the springs, with additional support from spring mandrels and sleeves for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If springs are not guided externally between holders, then the device complexity is reduced, but the springs risk buckling laterally when holders are widely separated
Solution Approach 1:
A coupling piece is introduced as an intermediary component between the holders to provide lateral guidance for the springs. The coupling piece includes spring guides that prevent lateral buckling of the springs while maintaining a relatively simple overall structure. This mediator enables reliable spring guidance without requiring complex external guidance mechanisms throughout the entire spring span.
2Reliability
If a spring pin is used to guide springs, then lateral guidance is provided, but the relative movement of holders is restricted
Solution Approach 1:
The guidance function is segmented and localized to specific regions where the springs need support most critically. The coupling piece provides guidance in the intermediate region between holders, while the spring receptacles in the holders provide guidance at the endpoints. This segmented approach allows holders to move freely within their receptacles while maintaining spring stability where needed.
3Reliability
If springs are guided over the entire travel distance, then buckling is prevented, but the device complexity increases
Solution Approach 1:
Lateral guidance is applied locally at critical positions rather than continuously along the entire spring length. The coupling piece positioned between the holders provides guidance where springs are most vulnerable to buckling when holders are widely separated. The spring receptacles in the holders provide additional local guidance at the endpoints. This localized guidance approach prevents buckling while minimizing overall device complexity.
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
This configuration ensures reliable lateral guidance of the springs over the entire adjustment range, preventing buckling and maintaining the spring force transmission effectively, even when the holders are far apart, thus enhancing the stability and functionality of the spring assembly.
Implementation Method 1
The energy storage device has two opposing holders that are pre-tensioned against each other by means of tensioning elements. The tensioning elements, designed as compression springs... The compression springs are designed to provide a comparatively high preload between the two holders.
Implementation Method 2
arranging a coupling piece between the springs, which transmits the force between the springs arranged in series and which has at least two spring guides that guide the springs laterally
Implementation Method 3
The spring guides reliably prevent the springs from buckling laterally. Good lateral guidance of the springs by the coupling piece can be achieved by designing at least one of the spring guides as a sleeve into which the associated spring is at least partially inserted.
Data Source
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AI summary
The invention relates to a spring assembly for driving a wing bracket for a wing of an item of furniture, wherein the spring assembly has a first and a second bracket, wherein the brackets are pre-tensioned against one another using at least one spring, and wherein each bracket has at least one spring support. A good lateral guiding of the springs arranged in a spring assembly of this type can be achieved by pre-tensioning the brackets against one another using at least two springs arranged in a row, and by arranging a coupling piece between the springs, which transmits the force between the springs arranged in a row, and which has at least two spring guides that laterally guide the springs at least in sections.