Single Header Tube Layout for Trailer Pin Box Floor Space
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Solution Overview
Problem
Existing upper deck frame assemblies for towable trailers have a significant header section that limits the use of floor space, making it difficult to utilize the area for livable space due to the difference in floor height.
Innovation Solution
The proposed upper deck frame assembly features a reduced header section with a single forward header tube, which minimizes the lengthwise span of the header, allowing for a larger flushed floor section and increased livable space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a traditional two-header design is used to mount the pin box, then the pin box can be securely mounted, but the header section occupies excessive floor space and creates a height difference that prevents livable space utilization
Solution Approach 1:
The patent combines the functions of two separate headers into a single integrated header tube. The single header tube serves both as the mounting structure for the pin box and as the structural support element, eliminating the need for a second header and thereby reducing the occupied floor space while maintaining mounting stability.
Solution Approach 2:
The patent repositions the pin box mounting frame to extend forward of the header section, utilizing the space in front of the header rather than requiring the header itself to occupy the full mounting area. This dimensional reorganization allows the floor to be flush with the main deck while the pin box mounts to the forward extension of the mounting frame.
2Reliability
If the header section is extended to provide adequate mounting surface for the pin box, then the pin box can be securely mounted, but the livable floor space is reduced
Solution Approach 1:
The patent segments the pin box mounting function from the main header structure by introducing a separate pin box mounting frame with mounting plates. The mounting plates attach to the header tube, and the pin box attaches to the mounting frame, creating a modular assembly that concentrates the mounting function in a compact area rather than requiring an extended header section.
Solution Approach 2:
The pin box mounting frame acts as an intermediary between the header tube and the pin box. Instead of directly mounting the pin box to an extended header, the mounting frame with its mounting plates provides an intermediate structure that secures the pin box to the header in a space-efficient manner.
3Area of stationary object
If a single header tube is used to reduce floor space occupation, then livable space is increased, but the structural support and mounting capability must be maintained
Solution Approach 1:
The patent employs a composite structural approach where the single header tube is made from a strong material (such as aluminum or steel) and is combined with a pin box mounting frame and mounting plates. This composite assembly provides the necessary structural support and mounting capability that would otherwise require a larger header section, thereby maintaining strength while reducing the occupied floor space.
Data Source
AI summary
An upper deck frame assembly for a trailer chassis includes a flushed floor section defining a first floor height, and a header section, with a header, forward of the flushed floor section and defining a second floor height above the first floor height. A towing assembly may be secured to the header. A reduced size header section increases usable floor space, and the towing assembly is securable to the header.