Headrest Attachment Member Design for Larger Rear-Seat Display Devices
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Solution Overview
Problem
Existing headrest configurations in vehicles are limited by the size of the attachment member, which restricts the size of the display device that can be attached, as the attachment member is smaller than the pad member and is fully housed within it.
Innovation Solution
A headrest design featuring a recessed housing portion in the pad member with an opening portion for the attachment member, where the outer peripheral portion of the opening is positioned further to the rear, allowing for a larger display device to be attached, and includes a folded-over portion for increased rigidity and a cutout in the lower plate for easy attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the attachment member is entirely housed within the housing portion of the pad member, then the headrest maintains a compact and integrated structure, but the size of the display device that can be attached is reduced
Solution Approach 1:
The attachment member extends beyond the housing portion in the depth direction (front-rear direction), utilizing the third dimension to increase the available attachment area without increasing the width or height dimensions that would affect the overall headrest compactness. This allows a larger display device to be attached while maintaining a compact lateral profile.
Solution Approach 2:
The headrest structure is divided into two functional zones: the housing portion that contains the attachment member and provides structural support, and the extending portion that protrudes outward to provide additional attachment surface area. This segmentation allows the display device to be mounted on the extending portion, effectively increasing the attachable area without compromising the integrated structure of the main body.
2Area of moving object
If the opening portion of the attachment member is increased in size to accommodate a larger display device, then the display device size is improved, but the rigidity of the attachment member may be reduced
Solution Approach 1:
The attachment member is designed with non-uniform thickness distribution: the rear portion (housing portion) has greater thickness to provide structural support and rigidity, while the front portion (extending portion) has reduced thickness to increase the opening size. This local quality variation allows the opening to be enlarged for larger display devices while the thicker rear portion maintains overall structural rigidity.
Solution Approach 2:
The attachment member is constructed using a composite structure combining a rigid resin material for the housing portion to ensure strength and rigidity, while the extending portion uses a thinner design that still maintains sufficient stiffness. This composite approach allows different regions to have optimized properties for their specific functions.
Data Source
AI summary
A headrest comprising a pad member that includes a recess shaped housing portion open to a rear side when the headrest is assembled to a vehicle seat and that is a resilient body that supports the head of an occupant; and an attachment member that has a portion housed in the housing portion, that is formed with an opening portion for attaching a display device to, and that further has an outer peripheral portion of the opening portion that is disposed further to the rear side than the pad member.