Ribbed Tube Connector with Pivot Catch for Leak-Tight Pull-Out Resistance
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Solution Overview
Problem
Existing connecting devices for circumferentially ribbed pipes, particularly in ventilation systems, often lack sufficient sealing, are complex in design, difficult to handle, and provide inadequate pull-out protection, making them unsuitable for construction site use.
Innovation Solution
A connecting device with a tube receptacle and a locking element that pivots relative to the tube receptacle, engaging in the corrugation troughs to enhance holding forces and simplify assembly, featuring a visual indicator for correct insertion and a compressible seal for secure connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If existing connecting devices are used for circumferentially ribbed pipes, then connection simplicity is improved, but pull-out protection and sealing reliability deteriorate
Solution Approach 1:
The locking element is designed to be movable relative to the tube receptacle, transitioning between a first position during insertion and a second locked position where it engages in the corrugation trough. This dynamic mechanism provides automatic locking without complex assembly steps, resolving the contradiction between simple operation and reliable pull-out protection
Solution Approach 2:
The locking element automatically engages in the corrugation trough of the tube when inserted, creating self-locking functionality. The design allows the connection to secure itself without additional fastening operations, maintaining simplicity while ensuring robust pull-out resistance
2Productivity
If existing connecting devices are used for circumferentially ribbed pipes, then assembly speed is improved, but sealing performance deteriorates
Solution Approach 1:
A seal element is introduced as an intermediary component between the tube and tube receptacle. This seal ensures leakage-free connection while the overall device maintains quick assembly capability, resolving the contradiction between assembly speed and sealing performance
Solution Approach 2:
The seal element is pre-positioned in the tube receptacle before tube insertion. This preliminary placement ensures sealing readiness without adding assembly steps, maintaining productivity while achieving reliable sealing performance
3Device complexity
If existing connecting devices are used for circumferentially ribbed pipes, then device simplicity is improved, but handling difficulty increases
Solution Approach 1:
The connecting device is divided into distinct functional components: a tube receptacle and a separate locking element. This segmentation allows each component to be optimized independently, maintaining overall simplicity while improving handling characteristics through modular design
4Ease of manufacture
If existing connecting devices are used for circumferentially ribbed pipes, then manufacturing cost is improved, but connection reliability deteriorates
Solution Approach 1:
The locking element utilizes geometric parameters of the corrugation trough (shape, depth, positioning) to achieve reliable mechanical engagement. By optimizing these geometric parameters rather than adding complex features, the device maintains low manufacturing cost while ensuring connection reliability
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 device ensures robust, cost-effective, and easy-to-assemble connections with enhanced pull-out protection and visual assurance of proper installation, reducing leaks and energy consumption in ventilation systems.
Implementation Method 1
The locking element has a first position that allows movement of at least a portion of the locking element relative to the tube receptacle and a second position that is designed to engage in a trough of the circumferentially ribbed tube
Implementation Method 2
featuring a visual indicator for correct insertion and a compressible seal for secure connections
Data Source
Figure 1~4
Figure 5~7
Figure 8~11
AI summary
The invention relates to a connection device for a peripherally ribbed pipe (4), comprising: - a pipe receptacle (1) having a receiving opening for receiving an end of the pipe (4); and - at least one catch element (3) for fastening the pipe (4) in the pipe receptacle (1). The pipe receptacle (1) has a longitudinal center plane (M), which extends through the receiving opening. The catch element (3) has a first point (S1), which allows movement of at least part of the catch element relative to the pipe receptacle (1), and a second point (S2), which is designed to engage in a corrugation trough (41) of the peripherally ribbed pipe (4). At least when the pipe (4) is inserted and fastened, the first point (S1) lies closer to the longitudinal center plane (M) than the second point (S2) does. The connection device according to the invention allows easy, leak-tight and secure fastening of a pipe.