Axially Fixable Sealing Assembly for Cable Feedthroughs
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Solution Overview
Problem
Existing cable sealing arrangements for housings are bulky, require multiple configurations for different wall thicknesses and cable diameters, and cannot be pre-assembled on the cable, leading to potential misalignment and increased complexity in installation.
Innovation Solution
A sealing arrangement that consists of a clamping body and a sealing part, where the sealing part is elastically deformable and connected to the clamping body in a non-positive or positive manner, allowing for axial fixation on the cable and radial sealing, with features like clamping tongues or grooves to ensure secure attachment and adaptability to uneven surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a two-part sealing arrangement is used to seal cable bushings, then the housing can be sealed against fluid and solid ingress, but the device becomes bulky and requires different configurations for different wall thicknesses and cable diameters
Solution Approach 1:
The patent combines multiple functions into a single integrated sealing component that performs both sealing and cable fixation. The sealing component includes an integrated cable fixing element with clamping arms that can radially displace the cable, eliminating the need for separate fixation devices and reducing the overall number of parts required.
Solution Approach 2:
The sealing component is designed as a universal solution that can accommodate different wall thicknesses and cable diameters through the elastic deformation of its material and the radial displacement capability of the clamping arms, eliminating the need for multiple size-specific configurations.
2Stability of the object's composition
If the sealing arrangement is designed to fix the cable against axial displacement, then cable positioning is improved, but the installation process becomes more complex requiring precise alignment
Solution Approach 1:
The sealing component is pre-assembled on the cable before installation into the housing, with the cable fixing element already in position. This preliminary assembly ensures proper cable positioning and alignment is achieved automatically during installation, eliminating the need for complex alignment procedures at the installation stage.
3Reliability
If the sealing part is made elastic to adapt to uneven surfaces, then sealing reliability is improved, but the material selection and manufacturing become more difficult
Solution Approach 1:
The sealing component utilizes the elastic properties of its material to adapt to uneven surfaces and dimensional variations in the cable bushing and cable. By selecting appropriate elastic modulus values for the material, the component can deform to conform to surface irregularities while maintaining sealing effectiveness, without requiring complex 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 provides a compact, adaptable, and secure sealing mechanism that can be pre-assembled on the cable, ensuring proper length and alignment during installation, reducing the risk of axial displacement and fluid ingress, while accommodating various cable and housing configurations.
Implementation Method 1
The sealing part is provided with a material which is elastically deformable in a radial direction between the cable and the cable bushing wall when the sealing arrangement is inserted into the cable bushing and which is compressed radially between the clamping body and the cable bushing wall when the sealing arrangement is inserted into the cable bushing, thereby effecting a sealing
Data Source
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AI summary
A sealing assembly, axially fixable to a cable for a cable entry into a housing, comprises a grommet with a clamping element and a sealing element attached to the clamping element. A clamping ring, which slides onto the clamping element, is provided for fixing the sealing assembly to the cable. The sealing element is made of an elastically deformable first material, and the clamping element is made of an elastically deformable second material. The second material exhibits lower elasticity than the first. The sealing assembly, fixed to the cable, is inserted into the cable entry, whereby the sealing element is deformed and compressed, thus sealing the cable entry against the ingress of fluids and solids.