Pipe Joint Fastening Ring Segmentation and Toggle Mechanism
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Solution Overview
Problem
Existing pipe joints with C-shaped fastening rings face difficulties in fastening large-diameter and thick PEX pipes due to high frictional resistance, requiring excessive torque and potentially leading to broken engagement portions.
Innovation Solution
The pipe joint employs vertically wound fastening rings with a guiding member and an approximately triangular toggle member, along with a bolt-nut connection system that transforms radial force into peripheral force, allowing the fastening ring to be diminished in diameter with reduced torque, and features a hitching-connecting mechanism to secure the toggle member's configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a C-shaped fastening ring with a single bolt-nut connection is used to fasten pipes, then the fastening force is concentrated, but the frictional resistance becomes excessively large for large-diameter and thick PEX pipes, making fastening difficult or impossible
Solution Approach 1:
The fastening ring is divided into multiple segments (first fastening ring, second fastening ring, third fastening ring) that can be independently positioned and fastened around the pipe. This segmentation distributes the fastening force across multiple points, reducing frictional resistance at each individual connection point while maintaining overall fastening effectiveness for large-diameter and thick PEX pipes
Solution Approach 2:
Different fastening rings are positioned at different locations around the pipe (e.g., first fastening ring at one location, second fastening ring at another location, third fastening ring at a third location), allowing each segment to apply fastening force locally where needed, thereby reducing the concentration of frictional resistance at a single point
2Force
If excessive fastening force is applied to overcome high frictional resistance, then the pipe can be fastened, but the rotational torque required becomes excessively large, potentially breaking the engagement portion of the worm and worm wheel
Solution Approach 1:
The fastening system is divided into multiple independent bolt-nut connections (first bolt-nut connection, second bolt-nut connection, third bolt-nut connection) distributed around the pipe. Each connection applies a portion of the total fastening force, so the rotational torque required at each individual worm-worm wheel engagement is significantly reduced compared to a single concentrated fastening point, preventing engagement portion breakage
Solution Approach 2:
The fastening force is distributed to multiple local positions around the pipe through separate fastening rings and bolt-nut connections. This local distribution of fastening force corresponds to local distribution of torque requirements, ensuring that no single worm-worm wheel engagement must generate excessive torque, thereby protecting the engagement portions from breaking
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 solution enables strong and efficient fastening of large-diameter pipes with reduced torque requirements, enhanced sealing ability, and prevents pipe dropping, while maintaining a compact joint design.
Implementation Method 1
an approximately triangular toggle member disposed to protrude in a radial outer direction from the fastening rings in a pipe unconnected state, and a bolt-nut connection for moving a central peak portion of the toggle member in a radial inner direction as to reduce a height dimension of the toggle member
Data Source
AI summary
A pipe joint with which loss of rotational force added by electric tools or man power is made remarkably small, and a fastening ring can be diminished with small torque, plural fastening rings 6 vertically wound for a predetermined center angle of 360° to 480°, a guiding member 8 holding the fastening rings 6 as to restrict falling of the fastening rings 6 and allow diminishing deformation, an approximately triangular toggle member 11 disposed to protrude in a radial outer direction from the fastening rings 6 in a pipe unconnected state, and a bolt-nut connection X for moving a central peak portion of a toggle member 11 in a radial inner direction as to reduce a height dimension of the toggle member 11, are provided.