Sliding Device Load Receiving Portion for Vehicle Seat Rail
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Solution Overview
Problem
Existing sliding devices for vehicle seats often deform significantly under compressed loads, which compromises their functionality and durability.
Innovation Solution
A sliding device design that incorporates a load receiving portion integrated with the movable rail, which is slidable with respect to the fixed rail, and is fixed to the roller bracket via swaging to maintain dimensional accuracy and prevent deformation, while also utilizing rollers for smooth movement and a clamp for secure attachment of the seat body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the movable rail is used to support the seat body in a slidable manner, then the seat body can be moved smoothly, but the movable rail deforms significantly under compressed loads
Solution Approach 1:
The movable rail is divided into two functional parts: the rail body that provides sliding functionality and the load receiving portion that handles compressed loads. This segmentation allows each part to be optimized for its specific function, resolving the contradiction between smooth sliding and load resistance
Solution Approach 2:
The load receiving portion acts as an intermediary element between the movable rail and the fixed rail. It receives and transmits compressed loads, protecting the movable rail from direct load exposure while maintaining sliding capability
2Strength
If welding is used to fix the load receiving portion to the roller bracket, then strong bonding is achieved, but thermal deformation occurs reducing dimensional accuracy
Solution Approach 1:
The welding process (thermal-mechanical system) is replaced with a swaging process (mechanical cold-forming system). This substitution eliminates thermal effects that cause deformation while maintaining strong bonding between the load receiving portion and roller bracket
Solution Approach 2:
The joining method changes from high-temperature welding to cold swaging, altering the physical parameters of the joining process. This parameter change prevents thermal deformation while achieving sufficient bonding strength
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 design effectively inhibits large deformation of the movable rail, ensuring reliable operation and maintaining dimensional accuracy, even under heavy loads, and facilitates production by integrating the load receiving portion with the roller bracket.
Implementation Method 1
the load receiving portion is fixed to the roller bracket by swaging
Implementation Method 2
at least one roller that makes the movable rail slidable with respect to the fixed rail
Data Source
AI summary
Disclosed is one example of a sliding device in which a movable rail can be inhibited from being largely deformed even when a load such as a compressed load acts on the movable rail. The sliding device includes a fixed rail, a movable rail, and a load receiving portion. The fixed rail is configured to be fixed to a vehicle. To the movable rail, the seat body is attachable. The movable rail is slidable with respect to the fixed rail. The load receiving portion extends from a fixed rail side toward a movable rail side. The load receiving portion is configured to receive a load directed from the movable rail toward the fixed rail in conjunction with the movable rail when the load acts on the movable rail.