Vehicle Overlay Floor With Two-Part Rails for Load and Vibration Control
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Solution Overview
Problem
Existing overlay floor solutions for motor vehicles lack a robust and flexible design that effectively distributes point loads, reduces vibrations, and provides easy installation while ensuring thermal and sound insulation.
Innovation Solution
The design features two-part mounting rails with upper rails having flanges and grooves for equipment fasteners and lower bases that fit into through-holes in the floor plate with a light interference, connected by screws or glue, providing a self-supporting, stiff, and durable overlay floor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If mounting rails are made as single-piece high profiles to prevent plate deflection, then structural strength is improved, but device complexity and installation difficulty increase
Solution Approach 1:
The mounting rail is divided into two separate parts: a lower base that remains fixed in the mounting socket and an upper rail that can be independently installed. This segmentation allows each component to be optimized separately - the lower base provides structural support while the upper rail provides mounting functionality, resolving the contradiction between strength and complexity.
Solution Approach 2:
The lower base is pre-installed in the mounting socket before the upper rail is attached. This preliminary action allows the base to be properly positioned and secured, providing a stable foundation that simplifies the overall installation process while maintaining structural integrity.
2Stability of the object's composition
If mounting rails are made as single-piece high profiles, then stiffness is improved, but ease of manufacture deteriorates
Solution Approach 1:
Dividing the mounting rail into lower base and upper rail components allows each part to be manufactured independently using optimized processes. The lower base can be manufactured with focus on structural properties while the upper rail can be manufactured with focus on mounting features, improving overall ease of manufacture while maintaining stiffness through proper assembly.
Solution Approach 2:
The design changes the geometric parameters of the two parts - the lower base has a width many times greater than the mounting socket width to provide stability, while the upper rail has a profile width that fits the socket with light interference. These parameter optimizations enable easier manufacturing of each component while maintaining the required stiffness of the assembled structure.
3Ease of operation
If through-holes are made in floor plate for mounting rails, then ease of operation is improved, but manufacturing precision requirements increase
Solution Approach 1:
The lower base is designed with a width that is many times greater than the mounting socket width. This parameter change creates a tolerant fit where the base extends well beyond the socket boundaries, making the installation process easier while reducing the precision requirements for the mounting socket itself.
Solution Approach 2:
The mounting socket only needs to provide localized guidance and support for the lower base, while the majority of the base's width extends beyond the socket to provide stability. This local quality approach means high precision is only required in the small region of the socket, not across the entire base width, thereby reducing overall manufacturing precision requirements.
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 enhances load distribution, reduces vibrations, and simplifies installation, offering a versatile and rigid floor that improves thermal and sound insulation, allowing for flexible arrangement of seats, wheelchairs, and other equipment.
Implementation Method 1
The lock of the upper rails and the lock of the base are joined together by a layer of glue
Implementation Method 2
The upper rails and the lower bases are connected to each other by screws where in the center of the upper rails there are bolt holes for screws and in the center of the profiles on the lower bases, there are threaded holes for the threads of the bolts
Data Source
AI summary
An overlay floor for motor vehicles, applied on the mother floor of the vehicle, intended to fix seats, wheelchairs or other equipment therein, having a shape adapted to the mother floor of the vehicle in which it is to be mounted. In the floor plate there are made longitudinal mounting sockets, into which two-part mounting rails are inserted. The mounting rails consist of an upper rail with flanges and a groove for equipment fasteners and a lower base connected to it. The mounting sockets are made in a uniform sheet of the floor plate as through, longitudinal holes for the profiles of the mounting rails. The upper rails have a longitudinal lock at the bottom for connection to the lower bases which have a corresponding longitudinal lock along the upper surfaces of the bases.