Corrugated Pipe Wear Ring With Screwless Radial Locking
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Solution Overview
Problem
Existing wear rings for corrugated pipes, hoses, and cables suffer from abrasion at screw positions, leading to damage of surrounding structures and require time-consuming re-positioning due to screw-based fastening methods.
Innovation Solution
A wear ring with radially movable ring inserts that secure to the corrugated pipe via positive-locking connections, allowing assembly and re-positioning without screws, using snap-fit connections and interchangeable inserts for versatile fitting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If screw-based fastening is used to secure the wear ring to the corrugated pipe, then the wear ring can be firmly fixed, but abrasion occurs at the screw positions leading to damage of surrounding structures
Solution Approach 1:
The patent removes the harmful screws from the design entirely and replaces them with a screwless fastening mechanism. The wear ring uses an expansion mechanism where the ring itself expands radially to secure onto the corrugated pipe, eliminating the source of abrasion damage to surrounding structures while maintaining firm fixation.
Solution Approach 2:
The patent introduces an intermediate expansion mechanism as a mediator between the wear ring and the corrugated pipe. Instead of direct screw-fastening that causes abrasion, the expansion mechanism distributes the securing force uniformly across the contact surface, preventing localized abrasion while achieving firm fixation.
2Strength
If screw-based fastening is used to secure the wear ring, then the wear ring can be firmly fixed, but re-positioning requires time-consuming disassembly and reconnection
Solution Approach 1:
The patent employs a dynamic expansion mechanism that allows the wear ring to be quickly adjusted between fixed and movable states. The ring can be rapidly expanded for secure fixation or contracted for easy removal and re-positioning, eliminating the time-consuming screw disassembly and reconnection process while maintaining strong fixation when needed.
3Strength
If metal or metal-like screws are used to connect ring halves, then strong connection is achieved, but abrasion at screw positions damages the counter-member and surrounding devices
Solution Approach 1:
The patent completely extracts metal screws from the design, replacing them with a screwless expansion fastening system. This eliminates the metal-on-metal or metal-on-surface abrasion that damages counter-members and surrounding devices, while the expansion mechanism provides equivalent or superior connection strength through distributed radial force.
Solution Approach 2:
The patent changes the physical parameters of the fastening system from concentrated screw points to distributed radial expansion. This parameter change transforms the connection method from localized high-stress points (screws) to uniform distributed pressure, preventing abrasion damage while maintaining strong connection.
Data Source
AI summary
The invention relates to a wear ring (10) for mounting on a pipe, tube, cable or the like, more particularly on a corrugated pipe (14). The wear ring (10) comprises two ring halves (18a, 18b), which can be interconnected to form a ring (18), wherein a fastening structure (26), by structures of which the ring (18) can be fixed on the corrugated pipe (14), is provided on the ring halves (18a, 18b). The ring halves (18a, 18b) comprise connecting elements (22), by structures of which the ring halves can be interlockingly interconnected in an axial direction, and the fastening structure (26) is formed by at least one ring insert (26), which can be radially moved on the ring (18) and which can be locked on the ring (18) in a radially inner position in order to fix the ring (18) on the corrugated pipe (14).