Vehicle Slide-Out Room Synchronizing Axle Mechanism
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Solution Overview
Problem
Existing slide-out room mechanisms in vehicles experience uneven extension and retraction due to localized load concentration, leading to play at the top, which can cause the slide-out room to unseal from the vehicle body, allowing dirt and water to enter, and require complex installation processes.
Innovation Solution
A motorized slide-out system with upper and lower gear racks and a synchronizing axle that distributes force evenly between the top and bottom of the slide-out room, along with a removable motor design and clamping mechanism for easy installation and maintenance, ensuring synchronized movement and secure sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heavy-duty gearing is used to increase mechanism lifespan, then reliability is improved, but force concentration at the bottom creates uneven slide-out conditions and play at the top
Solution Approach 1:
The patent divides the single concentrated drive into multiple separate gear racks positioned at different locations (front, rear, and optionally side walls). This segmentation distributes the driving force across multiple contact points, preventing force concentration at the bottom while maintaining the reliability benefits of heavy-duty gearing throughout the mechanism.
Solution Approach 2:
The patent combines multiple gear racks working simultaneously to achieve uniform force distribution. By merging the functionality of multiple distributed drive points, the system achieves both even slide-out conditions and reliable operation, resolving the contradiction between localized force concentration and overall stability.
2Ease of manufacture
If play exists in the gearing design, then ease of manufacture is improved, but the top of the slide-out room moves relative to the bottom and unseals from the vehicle body
Solution Approach 1:
By segmenting the drive into multiple gear racks, the patent reduces the impact of play in any single rack. The distributed configuration ensures that even with manufacturing tolerances and inherent play, the cumulative effect maintains proper alignment and sealing, as the multiple contact points work together to prevent relative movement between the top and bottom of the slide-out room.
3Ease of operation
If motorized mechanism is used to extend slide-out room, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple gear racks into a coordinated system that can be controlled by a single motor or synchronized control mechanism. This merging approach maintains ease of operation through automated control while managing device complexity by integrating the multiple components into a unified drive system with shared control architecture.
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 system provides even extension and retraction of the slide-out room, preventing water and dirt ingress and simplifying motor replacement and installation, enhancing the vehicle's interior conditions and user convenience.
Implementation Method 1
the slide-out mechanism often includes a gear rack fixed beneath the slide-out room floor with at least one gear mounted to the vehicle and engaged with the gear rack
Implementation Method 2
the slide-out mechanism often includes a gear rack fixed beneath the slide-out room floor with at least one gear mounted to the vehicle and engaged with the gear rack
Implementation Method 3
An axle having a top gear engaged with the top gear rack and a bottom gear engaged with the bottom gear rack
Data Source
AI summary
A slide-out system having a first and second slide-out assembly which are fixed to a first and second side of a slide-out room respectfully. Each assembly preferably includes an upper and lower gear rack fixed to the respective side of the slide-out room. An electric motor is connected to a drive gear that engages the top gear rack, driving movement of the slide-out room. This movement is distributed or synchronized with a lower portion of the room by an axle having a top gear engaged with the top gear rack and a bottom gear engaged with the bottom gear rack. Since the axle is not directly connected to the motor, it acts solely as a secondary synchronization mechanism between the top and bottom of the room.