Compact Seat Support Structure for Working Vehicles
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Solution Overview
Problem
Conventional seat support structures for working vehicles, such as tractors, require significant space due to the need for height adjustment and rotation mechanisms, making them bulky and difficult to minimize.
Innovation Solution
A compact seat support structure that incorporates a parallel link mechanism with a rotation shaft, a rotation plate, and a rotation lock unit, which allows for seat height adjustment and rotation while minimizing the overall space required, using a front link and rear link mechanism with a rear upper shaft and a rotation lock unit that deviates from the space between the supporting and fixed plates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a parallel link mechanism with height-control means, seat-location means, and rotation locking means is used, then the seat can achieve height adjustment and rotation functionality, but the space between the supporting plate and fixed plate becomes excessively large
Solution Approach 1:
The patent combines the height-control means, seat-location means, and rotation locking means into a single integrated rotation lock unit that performs multiple functions simultaneously. This merging of functions eliminates the need for separate mechanisms and reduces the overall space required in the parallel link structure.
Solution Approach 2:
The rotation lock unit is designed as a multi-functional component that simultaneously provides height control, seat location, and rotation locking capabilities. This universal component replaces what would traditionally require three separate mechanisms, thereby minimizing the space between the supporting plate and fixed plate.
2Ease of operation
If four parallel links are used for height adjustment, then the seat height can be changed, but the structure becomes bulky and difficult to minimize
Solution Approach 1:
The patent integrates the rotation locking mechanism directly into the parallel link structure, combining height adjustment and rotation locking functions within the same structural framework. This eliminates the need for additional separate mechanisms and reduces overall structural volume.
Solution Approach 2:
The rotation lock unit is positioned on the rear upper shaft, utilizing the vertical dimension and lateral space efficiently. This strategic placement allows the locking mechanism to operate in a different spatial dimension, minimizing interference with the parallel link mechanism and reducing overall structure size.
Data Source
AI summary
A seat support structure for a working vehicle comprises a fixed plate, a parallel link mechanism, a supporting plate, a rotation shaft, a rotation plate, a seat, a rear upper shaft, and a rotation lock unit. The fixed plate is fixed on a vehicle body of the vehicle. The parallel link mechanism includes a front link and a rear link. The supporting plate is connected to the fixed plate via the parallel link mechanism. The rotation shaft is fixed on a center portion of the supporting plate. The rotation plate is rotatably supported on the rotation shaft. The seat is attached to the rotation plate. The rear upper shaft connects the rear link to the supporting plate. The rotation lock unit is provided on the rear upper shaft.