Cable Fairlead Assembly With Double Tongue-Groove Sealing
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Solution Overview
Problem
Existing cable fairlead systems fail to provide sufficient water-tightness and strain relief due to deformation under physical stress.
Innovation Solution
A cable fairlead system comprising a frame unit with hard components and soft grommet elements, utilizing a double tongue-and-groove connection design to ensure a form-fit connection, which enhances stability and tightness by preventing grommet movement relative to the frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a standard frame unit with grommet elements is used, then cable installation is simplified and time is saved, but the system deforms under physical stress and fails to provide sufficient water-tightness and strain relief
Solution Approach 1:
The frame unit is divided into modular components (first frame element, second frame element, and multiple grommet elements) that can be independently manufactured and assembled. This segmentation allows each component to be optimized for its specific function while maintaining overall system integrity under stress.
Solution Approach 2:
The grommet elements are nested within the frame unit structure, with each grommet element containing a cable feedthrough. This nested arrangement ensures that cables are securely held within the grommets, which in turn are secured within the frame unit, providing multiple levels of protection against deformation and maintaining water-tightness under physical stress.
2Reliability
If grommet elements are added to the frame unit, then cable guidance and protection are improved, but the device complexity increases
Solution Approach 1:
The grommet elements serve multiple functions simultaneously: they guide cables through the frame unit, provide strain relief for the cables, and maintain water-tightness between the cables and the frame structure. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity while improving cable protection.
3Stability of the object's composition
If the frame unit and grommet elements are rigidly connected, then structural stability is improved, but the system becomes more prone to deformation under stress
Solution Approach 1:
The system uses a composite construction where the frame unit (first frame element and second frame element) provides rigid structural stability, while the grommet elements provide flexible cable protection and strain relief. This composite approach allows the rigid frame to maintain structural integrity while the flexible grommets accommodate stress without causing overall system deformation.
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 system achieves improved water-tightness and dust-tightness, maintaining integrity under mechanical stress, with reduced complexity and increased reliability, meeting IP6X-category standards.
Implementation Method 1
the grommet elements are arranged by means of a form-fit connection in the internal cross-section of the frame unit
Data Source
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Figure 3
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AI summary
The disclosure relates to a cable fairlead system (1) for passing at least one cable in a pass-through direction transverse to a main extension plane of the Cable fairlead system (1), comprising a frame unit (2) with a first frame element (2a) and a second frame element (2b), the frame elements (2a, 2b) being made with a hard component; and a number of grommet elements (3a, 3a', 3b, 3b') being made with a soft component, the soft component of the grommet elements (3a, 3a', 3b, 3b') being soft as compared to the hard component of the frame elements (2a, 2b), where at least one of the grommet elements (3a, 3a', 3b, 3b') has at least one cable-feedthrough (4) for passing one respective cable of the at least one cable; where the first frame element (2a) and second frame element (2b) delimit at least one through-opening (2c, 2c*) in which the grommet elements (3a, 3a', 3b, 3b') are arranged by means of a form-fit connection; with first-type tongue-and-groove connection elements (5a, 5a*, 6a, 6a*) extending along two neighboring inner sides (2a-L1, 2a-L2, 2a-B1, 2a-B2) of the through-opening (2c, 2c*) and along two neighboring outer sides (3a-U, 3a-R) of the grommet elements (3a, 3a', 3b, 3b'); and with second-type tongue-and-groove connection elements (5b, 5b*, 6b, 6b*) extending along two other neighboring inner sides (2a-R1, 2a-R2, 2b-U) of the through-opening (2c, 2c*) an along two other neighboring outer sides (3a-L, 3a-B) of the grommet elements (3a, 3a', 3b, 3b'); where first-type and second-type tongue-and-groove connection elements (5a, 5a*, 5b, 5b*, 6a, 6a*, 6b, 6b*) are fit to one another to form the form-fit connection (5, 6) with respect to the pass-through direction; and where on the inner sides of the through-opening (2c, 2c*) and on the outer sides of the grommet elements (3a, 3a', 3b, 3b') two tongue-and-groove connection elements (5a, 5a*, 5b, 5b*, 6a, 6a*, 6b, 6b*) are arranged in two different planes extending along the main extension plane in order to provide a more reliable cable fairlead system (1).