Slatted Frame Stop Strip Design for Increased Spring Deflection
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Solution Overview
Problem
Existing slatted frame designs suffer from reduced axial spring deflection and risk of damage when spring bodies tilt, due to the placement of stop surfaces within the spring travel path and the transmission of impulse loads to the longitudinal beam.
Innovation Solution
The stop surface is relocated from the assembly body to the longitudinal beam, where a stop strip limits deflection, allowing for increased axial travel and preventing damage by ensuring that stop plates on the beam side absorb tilting forces, with the option to adjust stop limits by exchanging stop bars of different heights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the stop surface is placed on the assembly body to limit spring deflection, then the spring bodies are protected from excessive deflection, but the axial spring travel is severely limited and the movement space is reduced
Solution Approach 1:
The stop surface is relocated from the assembly body to the longitudinal beam, changing the spatial dimension where the stopping function is implemented. This dimensional shift allows the spring bodies to achieve greater axial travel while the stop strip on the longitudinal beam provides the necessary deflection limitation, resolving the contradiction between protection and movement space.
2Reliability
If the stop surface is placed on the assembly body to prevent tilting, then the spring bodies are protected from damage due to tilting, but the maximum spring deflection is reduced and the spring structure is damaged
Solution Approach 1:
The stopping function is moved to the longitudinal beam in a different spatial location, allowing the spring bodies to deflect further axially while the stop strip provides lateral stabilization. This resolves the contradiction between preventing tilting damage and maintaining maximum spring deflection capability.
Solution Approach 2:
The stop strip acts as an intermediary element between the spring bodies and the longitudinal beam, providing both the stopping function to prevent excessive deflection and the stabilization to prevent tilting, without directly interfering with the spring bodies' axial movement.
3Reliability
If the damper strip is attached only to the upper side of the longitudinal beam to limit deflection, then the spring body deflection is controlled, but impulse loads are transmitted to the entire longitudinal beam causing potential damage
Solution Approach 1:
The stop strip is designed with localized engagement features that interact with specific portions of the spring body structure rather than the entire longitudinal beam. This local quality approach allows deflection control while isolating impulse loads to specific areas, preventing transmission to the entire beam structure.
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 design enhances axial spring deflection and prevents damage by eliminating internal stop limitations, allowing for greater freedom of movement and adjustable deflection limits, while maintaining a robust connection to withstand high loads.
Implementation Method 1
When the spring slats are loaded with the maximum compression pressure, the spring bodies are compressed in parallel, developing a counterforce
Implementation Method 2
the limit stop for limiting the deflection of the spring body is formed from a stop strip fastened on the side of the longitudinal beam the underside of a stop plate can be brought to a stop
Data Source
Figure 1
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Figure 3
AI summary
Slatted frame (1), consisting of interconnected longitudinal (2) and transverse bars with a number of mounting bodies (12) which are fixed at a mutual distance on the inside of the respective longitudinal bar (2), with the respective mounting body (12) having the respective Ends of spring slats (33) are accommodated in insertion pockets (7, 8) which are arranged on the top of one or more spring bodies (4-6) which are connected to the respective assembly body (12), with a limit stop for limiting the deflection of the spring bodies (4-6), the stop limiter for limiting the deflection of the spring bodies (4-6) being formed from a stop bar (11) fastened to the longitudinal beam side, which can be brought to a stop on the underside of a stop plate (9,10). is, which is connected to the insertion pocket (7.8).