Vehicle Seat Movable Frame Curved Surface Thigh Support
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Solution Overview
Problem
Existing vehicle seats with adjustable seating surfaces in the front-rear direction often fail to provide sufficient and comfortable support for occupants' thighs, and may produce noise during movement due to rough sliding between components.
Innovation Solution
A vehicle seat design featuring a movable frame with a curved upward surface and a plastic cover member that reduces noise and enhances comfort by allowing smooth movement, along with side covers and a flange portion for secure fixation, ensuring proper thigh support and reduced noise during adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the upper end of the movable frame is provided on the extended plane of the upper surface of the stationary frame (flat surface), then the structure is simple, but the support for occupant's thighs is insufficient and uncomfortable
Solution Approach 1:
The patent applies curvature by providing a curved surface on the upper end of the movable frame that protrudes beyond the extended plane of the stationary frame. This curved surface creates a gentle slope that comfortably supports the occupant's thighs while maintaining structural simplicity in the overall frame design.
2Device complexity
If the movable frame has a flat upper surface, then the structure is simple, but the frontward movement of the movable frame relative to the cushion pad produces noise due to rough sliding
Solution Approach 1:
The patent applies curvature by providing a curved surface on the movable frame that protrudes beyond the extended plane of the stationary frame. This curved surface creates a gentle slope that smoothly guides the cushion pad during frontward movement, reducing friction and noise while maintaining structural simplicity.
3Ease of operation
If the curved surface is provided on the body frame, then thigh support is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the movable frame into a body frame and a separate cover member. The curved surface is provided on the cover member rather than the body frame, allowing the cover member to be separately manufactured with the curved geometry and then assembled to the body frame, thereby reducing overall manufacturing complexity.
4Ease of manufacture
If the cover member is made of plastic, then the curved surface can be formed with increased ease and noise is reduced, but the structural strength may be compromised
Solution Approach 1:
The patent applies composite materials by combining a plastic cover member with a body frame (likely metal or rigid material). The plastic cover member provides the curved surface for comfort and noise reduction, while the body frame provides structural strength. The two materials work together to satisfy both manufacturing ease and strength requirements.
Data Source
AI summary
A vehicle seat comprising a stationary frame, a movable frame and a cushion pad is disclosed. The movable frame is provided at a front end portion of the stationary frame and configured to be slidable frontward and rearward between a first position and a second position that is frontward of the first position. The cushion pad is provided to extend frontward from an upper side of the stationary frame and configured to wrap around a front end portion of the movable frame. The movable frame has an upper surface including a curved surface bulging upwardly.