Segmented Retaining Ring Pipe Coupling for Tensile Pullout Resistance
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Solution Overview
Problem
Existing pipe connections lack sufficient tensile strength and reliability, particularly in applications requiring secure attachment without complex or costly manufacturing processes.
Innovation Solution
A tensile-resistant pipe connection design utilizing a retaining ring formed from multiple partial rings with clamping elements and retaining claws, where the retaining claws are threaded and extend axially, providing localized pressure to secure the pipe connection against pulling forces, and optionally using setscrews or screws for easy assembly and adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a retaining ring with a press-fit section is used to secure the pipe connection, then the pipe connection is secured in a slip-resistant manner, but the tensile strength is insufficient
Solution Approach 1:
The retaining ring is divided into multiple partial rings (at least two) that can be assembled separately and connected via clamping elements. This segmentation allows the retaining claw to be positioned precisely at specific locations where tensile forces need to be resisted, while maintaining the slip-resistant securing function of the press-fit section.
Solution Approach 2:
The retaining claw is designed with localized pressure application through threaded structures (screws, threaded rods, or setscrews) that concentrate force at specific points on the pipe surface. This creates high local pressure zones that resist tensile pulling forces without requiring the entire retaining ring to be uniformly strong, thus improving tensile strength while maintaining simplicity.
2Strength
If wedge elements with teeth are inserted into the retaining ring to penetrate the pipe surface, then tensile strength is improved, but the pipe surface is damaged
Solution Approach 1:
Instead of having the retaining ring directly penetrate the pipe surface with teeth, a retaining claw with a threaded structure acts as an intermediary. The threaded claw engages with the pipe surface through controlled threading that distributes stress and prevents surface damage while still providing sufficient tensile resistance. The claw mediates between the retaining ring and the pipe surface, achieving secure attachment without harmful penetration.
3Device complexity
If a retaining ring with a bead engagement is used to overlap the socket end, then structural simplicity is achieved, but tensile strength is insufficient
Solution Approach 1:
The invention merges two functional elements: the bead engagement mechanism (for structural simplicity and positioning) and the threaded retaining claw (for tensile strength). The retaining ring engages the bead at the socket end to maintain simplicity, while the additional retaining claw with threaded structure provides the necessary tensile resistance by anchoring into the pipe surface.
4Strength
If multiple partial rings with clamping elements are used to form the retaining ring, then localized pressure is generated to improve tensile strength, but device complexity increases
Solution Approach 1:
The retaining ring is segmented into multiple partial rings that can be manufactured and assembled separately. Each partial ring can be optimized for specific functions (e.g., one section for bead engagement, another for retaining claw placement). The clamping elements connect these segments, allowing localized pressure application at the retaining claw while keeping other sections simpler, thus balancing tensile strength improvement with acceptable 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
The design ensures a reliable, cost-effective, and secure attachment of pipes against both pulling and pushing forces, allowing for easy installation and retrofitting, even in confined spaces, with enhanced durability and resistance to displacement.
Implementation Method 1
The threaded retaining claw extends in the axial direction of the first tube, so that the individual threads form claws that run transversely to the longitudinal direction of the tube and thus provide a barrier against pulling forces
Implementation Method 2
The retaining claw has a thread. Accordingly, screws, appropriately cut lengths of threaded rods, or the like can be used. The threaded retaining claw extends in the axial direction of the first tube
Implementation Method 3
Two adjacent partial rings are connected by clamping elements, allowing their distance from each other to be varied. a clamping ring is provided as a clamping device. This ring runs around the outside of the claw section of the retaining ring and exerts a radially inward-directed pressure effect
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
In a tensile-resistant pipe connection (1), comprising a first pipe (2) having a pointed end extending into a socket end of a second pipe (3), wherein the second pipe (3) has a circumferential bead (4), and comprising a retaining ring (6) which engages the bead (4) of the second pipe (3) in such a way that the retaining ring (6) is positively secured to the second pipe (3) in the axial direction against pulling forces, and wherein the retaining ring (6) has a claw section (7) extending over the first pipe (2), and wherein at least one retaining claw (8) penetrating the surface of the first pipe (2) is arranged in the claw section (7) in such a way that the first pipe (2) is positively secured against pulling forces, the invention proposes that the retaining ring (6) be formed from at least two partial rings (15), each extending over a partial circumference of the retaining ring (6).wherein two adjacent partial rings (15) are connected to each other by clamping means (16).