Floating Floor Panel Retention Channels for Transit Vehicles
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Solution Overview
Problem
The assembly of floating floors in public transportation vehicles is complex and time-consuming due to the need for precise positioning of multiple structural elements and metal connections, which complicates the installation process.
Innovation Solution
A simplified assembly method using retention channels and protrusions made of light metal, with resilient elements, allows floor panels to be retained in the longitudinal direction without direct contact with the underframe, enabling easier installation and interlocking edge profiles to form a unit, reducing the need for precise positioning of each panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If floor panels are fixed to the underframe with multiple structural elements and metal connections, then connection strength is improved, but assembly complexity and time increase
Solution Approach 1:
The patent combines multiple retention functions (vertical support, longitudinal positioning, lateral positioning) into a single integrated retention channel structure. The retention channel simultaneously provides all necessary constraints for the floor panel, eliminating the need for separate structural elements and metal connections, thus reducing assembly complexity while maintaining connection strength.
Solution Approach 2:
The retention channel serves multiple functions: it acts as a support element, a positioning guide, and a retention mechanism all in one component. This multi-functional design simplifies the overall assembly structure by replacing multiple specialized components with a single universal element that performs all necessary functions.
2Manufacturing precision
If precise positioning of multiple structural elements is required, then positioning accuracy is improved, but assembly time increases
Solution Approach 1:
The retention channel is pre-installed on the underframe with all positioning features already in place. This preliminary action eliminates the need for complex real-time positioning during assembly, as the floor panel simply needs to be engaged with the pre-positioned retention channel, significantly reducing assembly time while maintaining positioning accuracy.
Solution Approach 2:
The retention channel acts as an intermediary element that simplifies the positioning process. Instead of directly positioning the floor panel against multiple structural elements, the retention channel serves as a mediator that guides and constrains the panel into the correct position, reducing the precision requirements for direct panel-to-frame positioning.
3Stability of the object's composition
If floor panels are directly connected to the underframe, then structural stability is improved, but acoustic insulation deteriorates
Solution Approach 1:
The retention channel serves as an intermediary element between the floor panel and the underframe, providing mechanical connection while allowing acoustic insulation material to be positioned between these components. This mediator approach maintains structural stability through the retention channel's constraints while preserving acoustic insulation by not requiring direct metal-to-metal contact.
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
This method significantly reduces assembly time by allowing the second floor panel to be easily positioned relative to the first, with only the first panel requiring precise alignment, and ensures accurate longitudinal positioning while maintaining acoustic insulation and allowing for thermal expansion.
Implementation Method 1
The one or more retention channels are each provided with resilient elements between each of the retention walls and the one or more retention protrusions
Data Source
Figure 1~2
Figure 3~5
AI summary
A vehicle body (12, 20) of a public transportation vehicle, comprises an underframe (42), and a set of floor panels (28, 30, 32) covering the underframe (42). The floor panels (28, 30, 32) rest on the underframe (42) without being fixed to the underframe (42) in a vertical direction. The underframe (42) is provided with one or more retention channels (60, 160) extending in a transverse direction of the vehicle body (12, 20) and each provided with opposite retention walls (62, 162) that are parallel to a vertical transverse plane of the vehicle body (12, 20). One of the floor panels (28, 30, 32) is provided with one or more retention protrusions (58, 158) received in the one or more retention channels (60, 160) between the opposite retention walls (62, 162) at a distance of each of the opposite retention walls (62, 162).