Multi-Piece Shaft Assembly for RV Slide-Out Wall Misalignment

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Solution Overview

Problem

Conventional motorized sliding support mechanisms for RV slide-out modules face installation and operational challenges due to the non-planar surfaces of RV walls, as a single-piece shaft assembly often fails to maintain an operational gap and causes misalignment issues.

Innovation Solution

A multi-piece shaft assembly is used, comprising moveably connected shaft portions that accommodate angular misalignment, allowing for unimpeded repositioning of the slide-out module despite non-planar wall surfaces, with optional anchoring mechanisms for secure positioning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a single-piece shaft is used in the sliding support mechanism, then the structure is simple and easy to manufacture, but it causes misalignment and operational problems when the RV wall surface is non-planar

Engineering Contradiction:

Improveease of manufactureVSAvoidreliability

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The single-piece shaft is divided into multiple shaft portions (first shaft portion, second shaft portion, etc.) that can move relative to each other. This segmentation allows each portion to independently accommodate angular misalignment caused by non-planar wall surfaces, thereby maintaining reliable operation while remaining manufacturable through standard machining processes.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The shaft portions are connected in a manner that allows them to move dynamically relative to one another, transforming the static single-piece shaft into a dynamic multi-segment structure. This dynamic capability enables the shaft assembly to adapt to varying angular misalignments during operation, resolving the reliability issue without significantly complicating manufacturing.

Inventive Principle:

Principle #15Dynamics

2Device complexity

If a single-piece shaft is used, then the device structure is simple, but it fails to accommodate angular misalignment on non-planar surfaces

Engineering Contradiction:

Improvedevice complexityVSAvoidadaptability

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

By segmenting the shaft into multiple movable portions, the device gains adaptability to angular misalignment while keeping the overall structure relatively simple. Each shaft portion can independently adjust to the non-planar surface conditions, providing the necessary adaptability without requiring a completely complex redesign of the entire sliding support mechanism.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The multiple shaft portions are arranged in a nested or串联 configuration where each portion is connected to the next, allowing them to collectively accommodate angular misalignment. This nested arrangement provides adaptability to non-planar surfaces while maintaining a compact and relatively simple device structure.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Adaptability or versatility

If shaft portions are moveably connected to accommodate non-planar surfaces, then adaptability improves, but device complexity increases

Engineering Contradiction:

ImproveadaptabilityVSAvoiddevice complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The segmentation of the shaft into multiple movable portions provides the necessary adaptability to non-planar surfaces. The complexity introduced is localized to the connection joints between shaft portions, while the overall device structure remains relatively simple and maintains the original rack-and-pinion mechanism intact.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The dynamic connection between shaft portions allows the system to adapt to angular misalignment without requiring complex control mechanisms. The movable joints automatically adjust to accommodate surface irregularities, providing adaptability with minimal increase in overall device complexity.

Inventive Principle:

Principle #15Dynamics

4Ease of operation

If multiple shaft portions are used, then operational smoothness improves on uneven surfaces, but manufacturing complexity increases

Engineering Contradiction:

Improveease of operationVSAvoidease of manufacture

Core Design Contradiction:

Ease of operationVSEase of manufacture

Solution Approach 1:

Dividing the shaft into multiple portions improves operational smoothness by allowing each segment to independently accommodate surface irregularities. The manufacturing complexity increase is offset by the fact that each shaft portion can be manufactured using standard machining processes, and the assembly involves straightforward mechanical connections.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The dynamic connection between shaft portions enables smooth operation on uneven surfaces by automatically compensating for misalignment. The manufacturing process remains relatively simple as it involves standard mechanical joining techniques, balancing the improved operational characteristics with acceptable manufacturing complexity.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20260027962A1Multi-piece shaft for a sliding support mechanism and RV systems utilizing same

Publication Date: 2026.01.29 VROOM SLIDE SYSTEMS LLC

AI summary

A sliding support mechanism (for use with an RV slide-out module) utilizing a multi-piece-shaft in which constituent pieces, connected to one another length-wise, are substantially moveable with respect to one another such as to allow for accommodation of the non-planarity of the wall of the slide-out module when the module is extended along such wall. Methodology of using/operating the same.