Vehicle Seat Assembly With Auto-Return Sliding Seat Part
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Solution Overview
Problem
Existing vehicle seats in the railway industry are complex, costly to repair, and require manual adjustment back to the basic position after use, which is inefficient and labor-intensive.
Innovation Solution
A vehicle seat design featuring a seat part frame and a displaceable seat part guided by a guide means, where the seat part can be held in a displaced position by a person's weight and automatically returns to the basic position using a restoring element, such as a gas spring, when the person leaves, eliminating the need for manual adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking mechanism is used to hold the seat part in position, then the seat part can be held in the displaced position, but the device complexity increases and the ease of manufacture decreases
Solution Approach 1:
The patent removes the complex locking mechanism entirely and replaces it with a guide means that uses simple geometric constraints (slots and corresponding guiding elements) to hold the seat part in position. The guide means extracts only the essential function of position holding without the elaborate locking components.
Solution Approach 2:
The guide means is segmented into multiple independent components: slots in the seat part frame, corresponding guiding elements in the seat part, and a restoring element. These segmented components work together to achieve position holding and automatic restoration without requiring a complex integrated locking mechanism.
2Reliability
If a locking mechanism is used to hold the seat part in position, then the seat part can be held in the displaced position, but the ease of repair decreases and manufacturing cost increases
Solution Approach 1:
By removing the locking mechanism entirely, the patent eliminates the repair and cost issues associated with complex locking systems. The guide means with slots and guiding elements provides a simpler, more repairable solution that maintains position holding functionality.
3Reliability
If manual restoration is required when the person leaves the seat part, then the seat part can be held in the displaced position, but the productivity decreases and time is lost
Solution Approach 1:
The restoring element automatically returns the seat part to its basic position when the person leaves, making the system self-servicing. The seat part does not require manual restoration by attendants, improving productivity and eliminating time loss while maintaining the ability to hold the displaced position during use.
4Device complexity
If a guide means is used instead of a locking mechanism, then the device complexity decreases and ease of manufacture improves, but the ability to hold the seat part in position may be compromised
Solution Approach 1:
The restoring element acts as an intermediary that works in conjunction with the simple guide means to achieve reliable position holding. The guide means provides the geometric constraints while the restoring element provides the force to maintain position and enable automatic restoration, together achieving both simplicity and reliability.
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 allows for simple, tool-free assembly and disassembly, reduces manual workload, and automatically returns the seat to its basic position, saving time and effort, particularly in rail transport settings.
Implementation Method 1
A restoring element is formed and provided to shift the seat part from the displaced position to the basic position when the person leaves the seat part
Implementation Method 2
the seat part can be held in the displaced position by the weight of the person sitting on the seat part
Data Source
AI summary
The invention relates to a vehicle seat having a seat part frame and a seat part which can be displaced in relation to the seat part frame, wherein the seat part is guided on the seat part frame by means of a guide means.