Device for passing a conduit through a wall and container comprising such a device
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Solution Overview
Problem
Existing passage devices for conduits through insulated containers, such as hot water tanks, face challenges with sealing and rigidity, allowing foam expansion issues and limited dimensional adaptation, leading to potential deformation and unsightly formations.
Innovation Solution
A passage device composed of two annular bodies with flexible circumferential lips that pinch the wall, featuring a radially inner sleeve with a profiled region and an elastically deformable inner sleeve for secure engagement with the conduit, ensuring precise positioning and adaptation to varying dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If passage devices are made entirely of plastic material, then ease of manufacture is improved, but structural rigidity deteriorates, leading to insufficient positioning precision during foaming
Solution Approach 1:
The passage device combines plastic material with a metallic support element (mandrel or reinforcement bar) to create a composite structure. The plastic provides sealing and ease of assembly, while the metallic element provides the necessary rigidity and positioning precision during the foaming process. This composite approach resolves the contradiction between ease of manufacture and structural strength.
2Ease of operation
If screw tightening is not limited, then assembly ease is improved, but harmful effects worsen due to thread damage and wall deformation from overtightening
Solution Approach 1:
The device incorporates a limiting stop or maximum engagement feature that prevents over-tightening before it occurs. This preliminary protective measure allows easy assembly through screw tightening while automatically preventing the harmful effects of thread damage and wall deformation by stopping the tightening process at the appropriate point.
Solution Approach 2:
A metallic mandrel or support element acts as an intermediary between the screw connection and the conduit/duct. This intermediary component distributes and limits the tightening force, preventing direct transmission of excessive force that would cause thread damage or wall deformation, while still allowing easy assembly.
3Ease of operation
If the internal part is not rigidly connected to the conduit, then assembly ease is improved, but positioning stability deteriorates during foaming due to pressure-induced sliding
Solution Approach 1:
A metallic mandrel or support element serves as an intermediary that provides rigid connection to the conduit while maintaining ease of assembly. This intermediary component ensures positioning stability during foaming by preventing pressure-induced sliding, while its design allows for simple installation and removal.
Solution Approach 2:
The combination of plastic and metallic elements creates a composite passage device where the metallic component provides the rigid connection to the conduit necessary for positioning stability during foaming, while the plastic components maintain ease of assembly. The composite structure resolves the contradiction between assembly ease and positioning stability.
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 provides a rigid and resistant connection, maintaining the conduit's position, preventing foam expansion issues, and allowing for easy assembly and adjustment, while avoiding deformation risks and ensuring a secure seal.
Implementation Method 1
the internal sleeve (6'') of the second annular body (6) comprises wall portions (9) which are elastically stressed and/or subjected by the internal sleeve (5'') of the first annular body (5) to enter into a blocking engagement with the conduit (2)
Implementation Method 2
respective flexible circumferential lips (5' and 6'), each bearing on one of the said internal and external faces (4' and 4'') of said wall (4), around the opening (3)
Data Source
Figure 1~2
Figure 3~4A
Figure 4B~5
AI summary
The invention relates to a conduit passage device (2) intended to be mounted in an opening (3) of a wall (4) having opposite internal and external faces and on the end (2') of said conduit, said device comprising a first external annular body (5) and a second internal annular body (6) configured to be mounted concentrically on the end of the conduit (2) and to pinch the wall (4) between them.This passage device is characterized in that the first annular body (5) comprises a radially inner part (5") in the form of a sleeve with a profiled region (7) on its inner face, in that the second annular body (6) comprises a radially inner part (6") in the form of a sleeve with a profiled region (8) on its outer face, these two regions (7 and 8) cooperating mutually with overlap to achieve the assembly by positive engagement of the two annular bodies (5 and 6), and in that said inner sleeve (6") of the second annular body (6) comprises elastically deformable wall portions (9), which are stressed to come into blocking or locking engagement with the conduit (2) in the assembled state of the two annular bodies (5 and 6).