Cable Feedthrough With Marked Areas And Spring Clips
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Solution Overview
Problem
Existing cable bushings fail to provide adequate mechanical fixation of cables, leading to potential stress on connection points and risk of impermissible tension, despite ensuring sealing.
Innovation Solution
A cable bushing design featuring marked areas with integrated strain relief devices, such as spring clips, arranged in pairs around each cable passage, which automatically fix the cable upon insertion, utilizing a two-part structure with a soft outer skin and hard support frame, and angled spring clips to prevent cable retraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cable bushings are designed with simple protective grommets or rubber materials, then sealing is achieved, but mechanical fixation of cables is insufficient
Solution Approach 1:
The cable bushing combines a soft sealing component (grommet made of rubber or elastic plastic) with a hard support structure (flat plate made of insulating material). This composite construction allows the soft material to provide sealing while the rigid plate provides mechanical strength and fixation capability.
Solution Approach 2:
The cable bushing is divided into functionally distinct components: a sealing grommet portion and a support plate portion. Each component is optimized for its specific function - the grommet for sealing and the plate for structural support and fixation.
2Strength
If cable bushings use complex screw clamps for fixation, then mechanical fixation is improved, but device complexity and assembly effort increase
Solution Approach 1:
The cable bushing structure allows cables to be fixed automatically through the inherent design of the flat plate and grommet combination. The cable passes through the grommet which is embedded in the plate, creating friction and mechanical retention without requiring additional fastening operations or complex assembly steps.
Solution Approach 2:
The fixation function is merged into the basic structure of the cable bushing itself. The flat plate and grommet are integrated into a single component that provides both sealing and fixation functions simultaneously, eliminating the need for separate fixation mechanisms.
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 ensures secure mechanical fixation and sealing of cables without additional assembly effort, preventing cable pull-out and providing effective strain relief through the use of spring clips and a two-part construction with varying material properties.
Implementation Method 1
the spring clips being made of a medium-hard material so that, in addition to sufficient elasticity for contact with the respective cable according to the invention, they also have the necessary rigidity required to fix the cable in question
Implementation Method 2
the first plate is made of two plastics with different mechanical behavior using known 2K technology, namely a soft component as an elastic outer skin that allows the cable passages and a hard component that acts as a kind of support structure for the first plate
Data Source
Figure 1~3
Figure 4~5
Figure 6
AI summary
The cable feed through (10) has a marked area provided as a predetermined breaking point. The marked area serves temporarily as a cable passage (16). A device for strain relief (20) is assigned to each marked area. The cable feed through is manufactured in form of a plane carrier plate, which is made up of an insulating material, particularly plastic. Multiple marked areas are arranged on the carrier plate. The marked areas are connected by bars.