Split Cable Passage Seal for Rail Vehicles
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Solution Overview
Problem
Existing cable passage seals for rail vehicles are complex, costly, and time-consuming to install, requiring additional fastening elements and significant installation space, especially in compact underfloor areas where safety and customer-specific requirements demand adaptable and secure cable routing solutions.
Innovation Solution
A split compression seal with a tightening strap and sealing bush, allowing for pre-assembly and easy installation, featuring a split sealing sleeve with adaptable inner and outer cross-sections to accommodate various cable diameters, and a press frame for final compression, enabling secure sealing without the need for individual assembly of cable bundles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional cable passage seals with multiple fastening elements are used, then reliable sealing is achieved, but installation space and device complexity increase
Solution Approach 1:
The patent combines multiple fastening functions into a single integrated clamp structure that simultaneously secures both the cable conduit and the cable passage seal, eliminating the need for separate fastening elements and reducing overall device complexity while maintaining sealing reliability
Solution Approach 2:
The clamp is designed as a multi-functional component that performs both cable conduit fixation and seal retention functions, allowing a single element to fulfill multiple fastening requirements that previously demanded separate components
2Reliability
If conventional cable passage seals with individual cable bundle assembly are used, then secure cable routing is achieved, but assembly time and installation complexity increase
Solution Approach 1:
The clamp is pre-configured with integrated cable guides and retention features that automatically position and secure cable bundles during installation, eliminating the need for time-consuming individual cable routing and assembly operations while ensuring secure cable placement
3Adaptability or versatility
If cable passage seals adapted to various cable diameters are used, then versatility is improved, but device complexity and cost increase
Solution Approach 1:
The clamp incorporates adjustable and flexible elements that can dynamically adapt to different cable bundle diameters and configurations, providing versatility without requiring multiple fixed-configuration seal components, thereby reducing device complexity and cost
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
Facilitates space-saving, cost-effective, and efficient installation of cable passage seals that meet safety and customer requirements, allowing for individual adaptation to cable diameters and bundle sizes, reducing assembly time and complexity while ensuring reliable sealing against dust and water ingress.
Implementation Method 1
a tightening strap (130) for securing the compression seal (110) together with the sealing bush (120) inserted in the passage opening (160)
Data Source
Figure 1a~1c
Figure 2a~2l
Figure 3a~3e
AI summary
A cable penetration seal for a cable duct, in particular for a cable duct inlet in a rail vehicle, is described. The cable duct penetration seal comprises a split compression seal (110) which includes at least a first sealing part (111) with at least one recess (114) and a second sealing part (112) with at least one recess (114). The recess (114) of the first sealing part (111) together with the recess (114) of the second sealing part (112) forms a passage opening of the compression seal (110) when the two sealing parts (111, 112) are placed on top of each other with their recesses (114) facing each other.The cable penetration seal further comprises at least one split sealing bushing (120), the inner cross-section of which is adapted to accommodate at least one cable and the outer cross-section of which is adapted to the passage opening formed by the recesses (114) of the first sealing part (111) and the second sealing part (112). A kit for a cable penetration seal, a rail vehicle with a cable penetration seal, and a method for assembling a cable penetration seal are also described.