Vehicle Seat Guide Part Reduces Component Count
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Solution Overview
Problem
Conveyance seats require a reduction in the number of components to switch between seatable and storage states while maintaining stability and accommodating a bag space below the seat main body.
Innovation Solution
A conveyance seat design that uses a guide part to support the seat cushion, eliminating the need for additional components like leg members, with the guide part sliding to guide the seat back and cushion during state transitions, and incorporating a slide rail mechanism and operation member for compactness and ease of operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a leg member and leg retaining member are used to support the seat cushion, then the seat cushion is supported stably, but the number of seat components increases
Solution Approach 1:
The guide part is integrated into the base cover structure, combining the functions of guiding the seat back movement and supporting the seat cushion into a single component. This eliminates the need for separate leg members and leg retaining members, reducing the total number of components while maintaining support stability.
Solution Approach 2:
The guide part serves multiple functions: it guides the seat back during state transitions, supports the seat cushion in the seatable state, and provides structural integration with the base cover. This multi-functionality replaces what previously required multiple dedicated components.
2Device complexity
If the guide part contacts the lower portion of the seat cushion to support it, then the number of components is reduced, but the seat cushion stability may be compromised
Solution Approach 1:
The guide part is integrated into the base cover structure, combining the functions of guiding the seat back movement and supporting the seat cushion into a single component. This eliminates the need for separate leg members and leg retaining members, reducing the total number of components while maintaining support stability.
3Productivity
If the seat main body is designed for compact storage, then the storage space efficiency is improved, but the space for bag accommodation below the seat may be reduced
Solution Approach 1:
The design separates the storage function into two distinct spaces: the storage space in front of the seat for the seat main body, and the bag accommodation space below the seat cushion. This segmentation allows both compact storage and bag accommodation to coexist without interfering with each other.
Solution Approach 2:
The solution utilizes the vertical dimension by positioning the bag accommodation space below the seat cushion rather than competing for horizontal space. This dimensional separation allows the seat to maintain compact storage capability while preserving bag storage volume.
Data Source
AI summary
In a vehicle seat that can switch the state of a seat main body which includes a seat back and a seat cushion between a seatable state in which the seat back is erected to a car body floor to allow a seated occupant on the seat cushion and a storage state in which the seat back tilts down to the car body floor and the seat cushion is disposed between the seat back and the car body floor, the vehicle seat is provided with a guide part that contacts the lower portion of the seat cushion and supports the seat cushion when the seat state is in the seatable state, that slidably contacts a part of the seat main body in the transition of the state to the storage state, and that thus guides the movement of the seat back and the seat cushion.