Clamp Spring Connection for Roof Drainage Pipe Retention
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Solution Overview
Problem
Existing connections for roof drainage components, such as pipe bends and downpipes, face issues with unintentional detachment due to weight or tension, leading to increased assembly effort and manufacturing costs when using multiple clamping springs or complex alignments.
Innovation Solution
A clamping spring design with a plate-shaped foot part and a spring part bent at more than 90°, featuring two independently acting spring tongues with claws, providing a significantly enhanced holding force without increasing production costs or assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple clamping springs are used to increase holding force, then connection reliability improves, but manufacturing cost increases
Solution Approach 1:
The single clamping spring is segmented into multiple spring tongues (at least two) that are arranged parallel to each other and extend from the foot part. Each spring tongue acts independently to provide clamping force, effectively dividing the function of multiple separate springs into a single integrated component, thereby maintaining connection reliability while reducing manufacturing cost.
Solution Approach 2:
Multiple spring tongues are merged into a single clamping spring body that is riveted as one piece to the pipe socket. This combines the functions of multiple separate clamping springs into one unified component, reducing the number of parts to be manufactured, inventory managed, and assembled, thus lowering overall manufacturing cost while maintaining the cumulative clamping force of multiple springs.
2Reliability
If multiple clamping springs are used to increase holding force, then connection reliability improves, but device complexity increases
Solution Approach 1:
The clamping spring is segmented into multiple spring tongues within a single body, providing multiple clamping points simultaneously. This segmentation allows the spring to engage with multiple positions on the drainage component without requiring multiple separate springs, thereby improving reliability while avoiding the alignment and assembly complexity of installing multiple independent springs.
Solution Approach 2:
Multiple spring tongues are combined into one riveted component that is installed as a single unit. This merging eliminates the need for separate assembly operations for each spring, reduces the number of fastening operations required, and simplifies the overall assembly process while delivering the enhanced holding force of multiple clamping elements.
3Force
If the spring part is bent at more than 90° to create independent spring tongues, then holding force increases, but manufacturing precision requirements increase
Solution Approach 1:
The spring part is bent at an angle of more than 90° relative to the foot part, creating a geometric configuration that enables the spring tongues to exert greater clamping force on the drainage component. This parameter change in the bending angle transforms the mechanical advantage, allowing the same material to generate higher holding force while the bending process itself can be controlled through standard forming techniques.
Solution Approach 2:
The bent spring part is segmented into multiple independent spring tongues that function separately but are integrated into one piece. This segmentation allows each tongue to independently engage with the drainage component, distributing the clamping force across multiple contact points and increasing total holding force without requiring extremely precise bending, as each tongue can accommodate slight variations in positioning.
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 clamping spring design achieves more than twice the holding force of traditional designs with a single spring, allowing for a more secure connection while reducing manufacturing costs and simplifying assembly, and can be used in thinner materials with a planar indentation or without additional pipe socket indentations.
Implementation Method 1
the spring force of the clamping spring pressing the claw into the material of the drainage component pushed over
Implementation Method 2
the claws 3 claw firmly into the material of the piece of pipe pushed over the pipe socket
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a clamping spring for connecting drainage components, in particular roof drainage components, comprising a plate-shaped base and a spring section adjoining the base; wherein the spring section has at least one claw at its free end facing away from the base. The clamping spring according to the invention is characterized in that the spring section is folded or bent at an angle of more than 90° relative to the base and is formed by at least two adjacent, independently springable spring tongues extending from the base, each having at least one claw at its free end facing away from the base.