Modular Highchair Height Adjustment With Stable Front Carrier
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing highchairs with height adjustment mechanisms often require unnecessary base components to extend above the seat surface, creating empty space and compromising stability, and lack user-friendly and secure height adjustment systems.
Innovation Solution
A modular highchair design featuring a base with a carrier that moves vertically along the front side, integrated with a locking mechanism using a hinged lever and cam system, and gas springs for easy height adjustment, ensuring the base remains under the seat surface at all heights and providing secure locking and easy operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the seat is adjusted to lower positions, then the height of the seat surface is reduced, but unnecessary parts of the base extend above the seat surface creating empty space and compromising stability
Solution Approach 1:
The base is divided into functional segments: a lower portion that remains stationary on the floor and an upper portion that moves with the seat. This segmentation allows the stationary lower portion to provide stable support while the moving upper portion adjusts with the seat, eliminating the stability problem caused by the entire base extending above the seat surface.
Solution Approach 2:
The base transitions from a two-dimensional footprint to a three-dimensional structure with a lower portion extending downward. This vertical extension into the third dimension allows the base to remain under the seat surface at all heights, eliminating empty space and maintaining stability without compromising the seat's height adjustment range.
2Adaptability or versatility
If a height adjustment mechanism is added, then the seat height can be changed to accommodate growth, but the mechanism becomes complex and difficult to operate securely
Solution Approach 1:
The height adjustment function is extracted from the base and transferred to the carrier. The carrier, which moves vertically along the front side of the base, incorporates the adjustment mechanism. This extraction simplifies the overall system by localizing the complexity to a manageable component and improving operational ease.
Solution Approach 2:
The height adjustment mechanism uses dynamic elements including a hinged lever that rotates between locked and unlocked positions, and gas springs that provide controlled movement. These dynamic components enable easy operation while maintaining secure locking, resolving the contradiction between adjustability and ease of operation.
3Reliability
If a secure locking mechanism is implemented, then the seat height is securely maintained, but the mechanism becomes complex with multiple components
Solution Approach 1:
The locking function is merged with the carrier structure itself. The lower portion of the carrier forms an integrated locking mechanism that works together with the hinged lever and cam. This merging reduces the number of separate components while maintaining secure locking, as the carrier's own structure provides the locking surfaces and engagement points.
Solution Approach 2:
The locking mechanism is designed to be self-locking through the cam and lever system. When the carrier is positioned at the desired height, the lever automatically engages with the base structure to lock the position. The gas springs also provide self-closing action, reducing the need for additional locking components and simplifying the overall mechanism while maintaining reliability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design allows for comfortable and safe use across various child growth stages, with a compact and stable structure, easy assembly and disassembly, and secure height adjustment that prevents accidental release, enhancing user convenience and safety.
Implementation Method 1
the highchair comprises at least one gas spring, one end of which is mounted on the base and the other end of which is mounted on the seat
Implementation Method 2
said locking device comprising a lever being formed by a lower portion of said carrier and movable between a locked position wherein said lower portion extends in the lateral plane through the carrier, and an unlocked position wherein said lower portion extends in front of said plane
Data Source
AI summary
A highchair comprising a base arranged to rest on a floor, a carrier mounted on said base and adjustable in a substantially vertical direction with respect to said base, and a seat comprising a substantially horizontally extending seat surface connected to said carrier, wherein said carrier extends substantially downward from the front edge of said seat surface.