Coupling Device Sleeve with Protective Cover
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Solution Overview
Problem
Existing coupling devices for fluid lines in internal combustion engine systems lack enhanced functional reliability and cost-effectiveness, particularly in crankcase ventilation and fresh air systems, where secure and durable connections are crucial.
Innovation Solution
The coupling device features a sleeve with a protective cover and non-detachable latching mechanism, incorporating a predetermined breaking point for controlled release, reducing the risk of damage and misuse, and utilizing integral latching contours to simplify production and assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective cover is added to the sleeve, then reliability is improved by protecting against contamination and damage, but device complexity increases
Solution Approach 1:
A protective cover is introduced as an intermediary component between the sleeve and the external environment. This cover protects the sleeve from contamination and mechanical damage without interfering with the latching function, as it is designed to be removable or destructible only when intentional release is required.
2Reliability
If the latching mechanism is made non-detachable without a protective cover, then reliability is improved by preventing accidental release, but the risk of damage from manipulation increases
Solution Approach 1:
The protective cover serves as a preliminary protective measure against harmful manipulation. It cushions the sleeve from direct contact with potential damaging forces, and its presence signals that the connection is intended to be permanent, thereby preventing unauthorized or accidental manipulation attempts.
Solution Approach 2:
The protective cover acts as an intermediary barrier that protects the latching mechanism from harmful external factors while allowing the non-detachable design to function as intended. It absorbs or deflects potential damaging forces before they can reach the sleeve and connecting pieces.
3Ease of manufacture
If integral latching contours are used instead of separate securing elements, then manufacturing cost is reduced and production is simplified, but assembly precision requirements increase
Solution Approach 1:
The latching contours are merged directly into the sleeve structure as integral features rather than being separate components. This eliminates the need for additional securing elements and reduces the number of assembly steps, while the precision requirements are managed through standardized design and manufacturing processes.
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 solution enhances the reliability and durability of fluid line connections by preventing accidental disengagement and allowing targeted destruction of the sleeve for maintenance, while reducing production costs through fewer components and simplified manufacturing.
Implementation Method 1
a resilient latching element which, in an engaged state, engages with the latching contour
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The present invention relates to a coupling device for connecting a first fluid line to a second fluid line, comprising a first fitting having an external locking contour on its outer surface and which is connected to or connectable to the first fluid line, a second fitting having an external locking contour on its outer surface and which is connected to or connectable to the second fluid line, and a sleeve (4) into which both fittings can be inserted at opposite ends and which has internal locking contours (10, 11) on its inner surface that are complementary to the external locking contours and which lock into place when the fittings are inserted. Increased operational reliability is achieved if the sleeve (4) is enclosed by a protective cover (25).