Rotatable Drive Unit Mounting for Seat Frame Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing motor vehicle seat frames require complex mechanisms and additional components to achieve height and inclination angle adjustments, complicating installation and increasing weight, while also consuming more space.
Innovation Solution
A seat frame design utilizing two side rails, a first cross bar, a second cross bar, and a drive unit with an actuating motor and actuator, where the drive unit is rotatably mounted on the first cross bar, eliminating the need for additional retaining brackets and allowing for height and inclination adjustments with minimal components and installation space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional retaining brackets and components are used to support the drive unit, then the drive unit can be securely mounted, but the weight and complexity of the seat frame increases
Solution Approach 1:
The drive unit is integrated directly onto the first cross bar structure, merging the mounting function into the existing structural component. This eliminates the need for separate retaining brackets and reduces the overall weight of the seat frame while maintaining secure mounting of the drive unit.
2Reliability
If additional retaining brackets and components are used to support the drive unit, then the drive unit can be securely mounted, but the device complexity increases
Solution Approach 1:
The drive unit is integrated directly onto the first cross bar structure, merging the mounting function into the existing structural component. This eliminates the need for separate retaining brackets and reduces the overall weight of the seat frame while maintaining secure mounting of the drive unit.
3Reliability
If additional retaining brackets and components are used to support the drive unit, then the drive unit can be securely mounted, but the installation space required increases
Solution Approach 1:
The drive unit is integrated directly onto the first cross bar structure, merging the mounting function into the existing structural component. This eliminates the need for separate retaining brackets and reduces the overall weight of the seat frame while maintaining secure mounting of the drive unit.
4Device complexity
If the drive unit is rotatably mounted on the first cross bar, then the number of components is reduced, but the mounting complexity increases
Solution Approach 1:
The drive unit is mounted rotatably on the first cross bar, allowing it to rotate about a second axis. This dynamic mounting approach reduces the number of components needed compared to fixed mounting, while the rotational capability is achieved through a simple bearing or pivot mechanism that does not significantly increase manufacturing complexity.
Data Source
AI summary
A seat frame is disclosed for a height-adjustable and tiltable seat pan of a motor vehicle seat. The seat frame has two side rails, a first cross bar, a second cross bar, and a drive unit. The first cross bar is supported in the two side rails and the second cross bar serves to support the seat pan. The second cross bar is mounted so as to be rotatable about fixed first axis in the two side rails. The second cross bar is rotated by the drive unit. The drive unit has an actuating motor and an actuator that is displaceable via the actuating motor and connected to the second cross bar outside the first axis. The drive unit is mounted on the first cross bar and rotatable about a second axis of the first cross bar which is fixed in the two side rails.