Height-Adjustable Child Seat with Lateral Shoulder Support
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Solution Overview
Problem
Existing child seats with height-adjustable headrests often compromise seating comfort for larger children due to fixed side panels, which do not adequately support broader shoulders, and lack optimal adjustment for smaller children.
Innovation Solution
The child seat features height-adjustable shoulder rest parts connected to the headrest, with guides that widen upwards, allowing simultaneous lateral adjustment, and a power-assisted adjustment device for precise extension and retraction, ensuring optimal fit for children of all sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the headrest is adjusted upwards along the back part to accommodate larger children, then the head support position is improved, but the side panels remain fixed and do not provide adequate lateral support for broader shoulders
Solution Approach 1:
The back part is divided into side panels and a central headrest section that can move independently. The headrest and shoulder rest parts are segmented from the fixed side panels, allowing each component to adjust separately to accommodate different child sizes and shapes.
Solution Approach 2:
The headrest and shoulder rest parts are made dynamically adjustable along the back part with guides that widen upwards. This dynamic structure allows the lateral distance between shoulder rest parts to increase automatically as the headrest moves upward, providing continuous adaptation to different child sizes.
2Device complexity
If fixed side panels are used to maintain structural simplicity, then the device complexity is reduced, but the seating comfort for larger children with broader shoulders is compromised
Solution Approach 1:
The side panels remain fixed and simple in structure, but the headrest and shoulder rest parts are made dynamically adjustable along the back part. The guides that widen upwards enable the lateral distance between shoulder rest parts to increase automatically, providing adaptability without complicating the overall side panel structure.
Solution Approach 2:
Only the headrest and shoulder rest parts are made adjustable with widening guides, while the side panels remain fixed. This local adjustment approach provides the necessary adaptability for different child sizes without requiring the entire side panel structure to be complex or movable.
3Device complexity
If manual adjustment mechanisms are used for the headrest, then the device complexity is minimized, but the adjustment effort required becomes excessive for optimal positioning
Solution Approach 1:
The manual adjustment mechanism is replaced with a power-assisted adjustment device that uses electrical or electronic actuation. This substitution reduces the physical effort required to adjust the headrest and shoulder rest parts while maintaining relatively simple overall device complexity.
Solution Approach 2:
A power-assisted adjustment device is integrated between the headrest with shoulder support parts and the seat part to enable easy height adjustment. This device likely uses pneumatic or hydraulic assistance to reduce the force needed for adjustment, making optimal positioning accessible to all users regardless of strength.
Data Source
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AI summary
A child's seat for vehicles is described, the child's seat having a seat part (12) from which a back part (16) protrudes upwards, with a head restraint (18) being fitted in a height-adjustable manner on the said back part. Two shoulder support parts (20) are connected in a height-adjustable manner to the head restraint (18). The back part (16) is designed with upwardly expanding guides (24, 26) along which the two shoulder support parts (20) are guided in such a manner that, upon a height adjustment of the head restraint (18), a lateral adjustment of the shoulder support parts (20) takes place simultaneously.