Vehicle Seat Support Structure for Rigidity Without Wire Noise
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Solution Overview
Problem
Existing vehicle seats lack comfort and rigidity, with support members often having complex structures and inadequate flexibility, which affects the seating experience and sensor mounting rigidity.
Innovation Solution
A vehicle seat design featuring a pair of opposed frames connected by bridging and reinforcing wires, covered by a plate-shaped plastic member to enhance flexibility and rigidity, with a seating sensor mounted between the reinforced sections to improve comfort and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal plate is used as the support member, then rigidity is improved, but flexibility deteriorates and comfort is reduced
Solution Approach 1:
The support member is constructed as a composite structure combining wires (metal) and a resin plate (polymer material). The wires provide rigidity and load-bearing capacity, while the resin plate provides flexibility and comfort. This composite material approach resolves the contradiction between rigidity and flexibility by integrating two materials with complementary properties into a single functional component.
2Device complexity
If wires are arranged to cross and contact each other, then structural complexity is reduced, but noise is generated and reliability deteriorates
Solution Approach 1:
The resin plate serves as an intermediary substance that separates and insulates the crossing wires from each other. Instead of allowing the wires to directly contact and potentially generate noise or wear, the resin plate mediates their interaction by providing physical separation while maintaining structural integration. This eliminates the harmful noise effect while preserving the simplified wire arrangement.
3Ease of manufacture
If the support member structure is simplified, then manufacturing ease is improved, but mounting holes for sensors become difficult to form
Solution Approach 1:
The resin plate is designed with locally differentiated properties: in most areas it provides continuous coverage for wire insulation, but in specific localized regions it includes through-holes for sensor mounting. This local quality approach allows the support member to maintain its simplified overall structure while providing convenient mounting points exactly where needed, resolving the contradiction between manufacturing simplicity and operational ease.
Data Source
AI summary
A vehicle seat comprises: a pair of opposed frames disposed opposite to and separately from each other; a pair of connecting frames disposed separately from each other in a perpendicular direction perpendicular to an opposing direction of the pair of opposed frames, the connecting frames being configured to connect the pair of opposed frames; a bridging wire disposed to bridge the pair of connecting frames; a reinforcing wire disposed to cross the bridging wire as viewed from an occupant side; and a plate-shaped plastic member configured to cover the bridging wire and the reinforcing wire at least at their crossover such that the bridging wire and the reinforcing wire are arranged to be spaced apart from and thus kept out of contact with each other, the bridging wire and the reinforcing wire being connected with the plate-shaped plastic member.