Mobility Vehicle Seat Leg Structure for Vertical Impact Absorption
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Solution Overview
Problem
Existing seat designs for aerial mobility vehicles struggle to effectively absorb impact loads during accidents without increasing the number of parts, weight, and costs, which can compromise passenger safety.
Innovation Solution
The seat design incorporates a seat frame, leg portions with elongated holes that include a narrow portion, and a pin member that connects the seat frame and leg portions. This configuration allows for efficient absorption of impact loads through the expansion and deformation of the elongated hole, without adding complexity or weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a shock absorber is added to the seat leg portions to absorb impact load, then the impact absorption capacity is improved, but the device complexity and weight increase
Solution Approach 1:
The invention extracts the shock absorption function from a separate shock absorber component and integrates it into the leg portion structure itself through the elongated hole with a narrow portion. The leg portion directly absorbs impact energy through deformation at the narrow portion, eliminating the need for an additional shock absorber device.
Solution Approach 2:
The invention merges the structural support function of the leg portion with the shock absorption function into a single integrated component. The elongated hole with the narrow portion serves both as a structural element and as the shock absorption mechanism, combining multiple functions into one element.
2Reliability
If a shock absorber is added to the seat leg portions to absorb impact load, then the impact absorption capacity is improved, but the weight of the seat increases
Solution Approach 1:
The invention removes the separate shock absorber component that would add weight, and instead uses the leg portion's own structure (the elongated hole with narrow portion) to provide shock absorption, thereby reducing overall seat weight while maintaining impact protection.
Solution Approach 2:
By combining the structural support function and shock absorption function into the single leg portion element, the invention eliminates the additional weight that would result from adding a separate shock absorber, achieving weight reduction while maintaining reliability.
3Reliability
If the narrow portion of the elongated hole deforms to absorb impact energy, then the impact absorption capacity is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The invention changes the geometric parameters of the elongated hole, specifically creating a narrow portion with controlled dimensions that allow for deformation. The narrow portion's width is designed to be smaller than the pin member diameter, creating a controlled deformation zone that absorbs impact energy while maintaining manufacturability.
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 seat design effectively absorbs impact loads, ensuring passenger safety by dissipating mechanical energy through the expansion of the leg portion's cross-section, while maintaining a simple configuration that does not increase the number of parts, weight, or costs.
Implementation Method 1
The elongated hole may at least partially include a narrow portion having a width narrower than a diameter or a width of the pin member
Implementation Method 2
The seat design effectively absorbs impact loads, ensuring passenger safety by dissipating mechanical energy through the expansion of the leg portion's cross-section
Data Source
AI summary
In a seat for a mobility vehicle configured for absorbing an impact load vertically applied in the event of an accident of an aerial mobility vehicle, ensuring the safety of a passenger, the seat includes a seat frame supporting at least a seat bottom of the seat; at least one leg portion supporting the seat frame and including an elongated hole formed to extend in a longitudinal direction of the at least one leg portion; and a pin member mounted on the seat frame and inserted into the elongated hole to connect the seat frame and the leg portion to each other. The elongated hole at least partially includes a narrow portion including a width narrower than a diameter or a width of the pin member.