Seat Back Headrest Holder Structure for Stable Attachment
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Solution Overview
Problem
Existing seat designs that allow adjustable headrests often require complex mechanisms integrated into the seat back, compromising comfort and stability due to mechanical stress, as the attachment is typically made behind the padded side or between shells.
Innovation Solution
A headrest attachment mechanism that securely attaches between the shell and padding of the seat back using a hook-shaped bearing profile section and planar arms with positioning studs, allowing for simple and direct attachment without additional stress on the seat back, ensuring both vertical and horizontal positioning of the headrest.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the headrest is attached to the back of the seat using conventional mechanisms, then the headrest can be adjusted for height, but the seat back structure becomes complex and mechanical stress compromises comfort
Solution Approach 1:
The invention extracts the attachment mechanism from the seat back structure itself and relocates it to the headrest holder. The bearing profile section with positioning studs is integrated into the holder rather than the back, allowing the seat back to remain a simple shell covered with padded upholstery without integrated displacement mechanisms.
Solution Approach 2:
The bearing profile section acts as an intermediary element between the headrest holder and the seat back. It provides the necessary attachment functionality through its hook shape and positioning studs, while remaining part of the holder assembly rather than requiring modifications to the seat back structure.
2Reliability
If the attachment is made behind the padded side or between shells to ensure stability, then mechanical stress is reduced, but the attachment structure becomes more complex and comfort is compromised
Solution Approach 1:
Instead of attaching the headrest holder to the back of the seat back (conventional approach), the invention inverts the attachment approach by having the bearing profile section extend from the front side of the seat back through the padding to the shell. This allows the attachment means to secure the holder to the front of the back, simplifying the structure while maintaining stability.
3Reliability
If the seat back is dimensioned and designed for stable attachment, then the attachment is secure, but the comfort of the seat is compromised
Solution Approach 1:
The bearing profile section is designed with local quality features: the hook shape provides secure attachment to the shell, while the planar arm with positioning studs interfaces with the padding. This localized design allows stable attachment without requiring the entire seat back structure to be reinforced, preserving overall comfort.
Data Source
AI summary
The invention relates to a seat that comprises: a base; a sitting portion and a back support mounted on the base; a back including a shell and a padding attached to the shell; at least one attachment point provided with attachment means for attaching the back holder to the back; a headrest; and a headrest holder. The seat further includes: a bearing profile section adapted for attachment to the top of the shell of the back; and an arm with a planar aspect extending between the padding and the shell of the back, wherein said arm extends down to the attachment point(s) and is held rigidly by the attachment means of the back to the back holder.