Rail Clamping Profile Asymmetric Wedge Design
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Solution Overview
Problem
Existing rail systems face challenges in maintaining a secure clamping force for the rail within the carrier profile, making it difficult to prevent the rail from being lifted out due to insufficient resistance against forces from rolling wheels, and the clamping profiles are hard to detach and reuse.
Innovation Solution
The rail system features a carrier profile with an undercut cross-sectional area and wedge-shaped clamping profiles that fit into the gap, providing a self-locking mechanism to secure the rail, allowing for easy assembly and disassembly by sliding the clamping profiles at an angle, and additional contact surfaces ensure the rail is securely held and resistant to twisting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If clamping profiles are locked in carrier profiles with snap-in connection, then assembly is simple and quick, but the clamping force is insufficient and the rail can be lifted out
Solution Approach 1:
The carrier profile features an asymmetric cross-section with a wider upper section and a narrower lower section, creating a tapered configuration. The clamping profile is designed with a corresponding asymmetric shape that matches this taper, allowing easy insertion from the wider top while preventing removal from the narrower bottom, thus providing both simple assembly and secure retention
Solution Approach 2:
The clamping profile incorporates curved contact surfaces that conform to the rounded cross-section of the rail. These curved surfaces distribute the clamping force evenly around the rail, preventing localized stress concentrations and enhancing the overall clamping effectiveness while maintaining smooth assembly and disassembly motions
2Ease of repair
If clamping profiles are designed to be easily detachable, then reusability improves, but the resistance against lifting forces decreases
Solution Approach 1:
The asymmetric tapered design allows the clamping profile to be easily detached by lifting it upward along the tapered path, while simultaneously providing strong resistance to lifting forces when installed, as the narrower lower section of the carrier profile mechanically locks the clamping profile in place
Solution Approach 2:
The clamping profile is designed to transition between two dynamic states: during installation, it moves freely along the tapered path; during operation, it is locked in position by the asymmetric geometry. This dynamic behavior enables both easy detachment and strong force resistance without requiring additional locking mechanisms
3Ease of manufacture
If the carrier profile has a uniform cross-section, then manufacturing is simpler, but the clamping effect is insufficient
Solution Approach 1:
The carrier profile features locally varied cross-sectional properties: the upper section has a wider opening to facilitate insertion of the clamping profile, while the lower section has a narrower opening to provide mechanical locking. This local variation in geometry provides both ease of assembly and strong clamping effect without requiring complex manufacturing processes throughout the entire 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 the clamping effect, preventing the rail from being lifted out without disassembling the clamping profiles and allows for a defined clamping force to be applied, ensuring the rail remains securely embedded while enabling easy replacement and reuse of the clamping profiles.
Implementation Method 1
The clamping profile, on the other hand, comprises a cross-sectional part which tapers downwards in the shape of a wedge and is fitted into a correspondingly shaped part of the intermediate space which lies within this undercut cross-sectional area
Data Source
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AI summary
Rail system (10) with a support profile (14) which has an upwardly open cross section (24), a rail (12) which lies in the support profile (14) in such a manner that a gap (32) remains at least between one side of the rail (12) and a side wall (30) of the support profile (14), which side wall bounds the open cross section (24), and at least one clamping profile (16) which lies in the gap (32), bears laterally with an inner contact surface (46) against a bearing surface (44) of the rail (12) and partially engages over the rail (12), wherein at least an upper part of the open cross section (24) of the support profile (14) is expanded laterally downwards to form an undercut cross-sectional region (34) which is bounded by two opposite, upper side wall sections (40) which are curved concavely inwards, and wherein at least part (50) of the cross section of the clamping profile (16) is tapered downwards in a wedge-shaped manner and is bounded towards the rail (12) by the inner contact surface (46) and towards the side wall (30) by an outer contact surface (48) which bears against the corresponding upper side wall section (40).