Pelvis Support Seat Structure for Adjustable Posture Correction
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Solution Overview
Problem
Conveyance seats, such as vehicle seats, face challenges in effectively adjusting the position and state of pelvis support members to correct the pelvis angle and posture of occupants, with existing solutions not adequately addressing the need for precise and comfortable adjustments.
Innovation Solution
A conveyance seat design featuring a pelvis support member with movable components, including a seat back side support portion, seat cushion side support portion, and connection portion, equipped with a movable mechanism that allows for adjustment of the pelvis support member's position and inclination angle, along with sensors to detect the inclination angle and minimize foreign-body sensations for occupants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the pelvis support member is made movable to enable posture correction, then the adaptability and posture correction capability are improved, but the device complexity increases
Solution Approach 1:
The pelvis support member is designed with movable capabilities, allowing it to dynamically adjust its position and inclination angle to correct occupant posture. The support member can move relative to the seat back and seat cushion, transforming from a static to a dynamic structure that adapts to different seating positions and posture requirements.
Solution Approach 2:
The pelvis support member is divided into multiple independent components including a seat back side support portion, a seat cushion side support portion, and a connection portion. This segmentation allows each part to move and adjust independently, providing fine-grained control over posture correction while managing overall system complexity.
2Measurement precision
If sensors are installed in the central region of the support surface to detect inclination angle, then the measurement precision is improved, but the foreign-body sensation increases
Solution Approach 1:
The sensor is strategically positioned in the central region of the support surface where it can accurately detect inclination angles while minimizing contact with the occupant's body. This localized placement optimizes the balance between measurement precision and occupant comfort, reducing foreign-body sensation in the area where the sensor is installed.
3Adaptability or versatility
If the pelvis support member structure is made complex to enable individualized positioning, then the adaptability is improved, but the ease of manufacture deteriorates
Solution Approach 1:
The pelvis support member incorporates movable mechanisms that enable individualized positioning through controlled movement rather than complex static structures. The ability to adjust position and inclination angle dynamically provides customization without requiring overly complicated manufacturing processes.
Solution Approach 2:
By dividing the pelvis support member into modular segments (seat back side support portion, seat cushion side support portion, and connection portion), the design achieves individualized positioning capability while maintaining manufacturability. Each segment can be manufactured separately and then assembled, simplifying the overall manufacturing process.
Data Source
AI summary
Provided is a conveyance seat including a pelvis support member of which a state or the like is adjusted. The conveyance seat includes the pelvis support member configured to support a portion of an occupant's body where a pelvis is positioned and lumbar supports configured to move the pelvis support member. The pelvis support member includes a seat back side support portion positioned behind a back portion of the occupant, a seat cushion side support portion positioned below buttocks of the occupant, and a connection portion that connects the seat back side support portion and the seat cushion side support portion. The lumbar supports are configured to move the pelvis support member so that a position of at least one of the seat back side support portion, the seat cushion side support portion, and the connection portion is changed with respect to the portion where the pelvis is positioned.