Booster Seat Armrest Latch Structure for Easy Height Adjustment
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Solution Overview
Problem
Existing child booster seats have armrests that are difficult to adjust in height, making it inconvenient for caregivers to customize the seating for children.
Innovation Solution
A child booster seat with a height-adjustable armrest assembly that includes a latching component with a tongue board and stop pieces, allowing for vertical movement and secure positioning at different heights, facilitated by a pressing component and return spring mechanism for easy adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the armrest is made fixed and simple in structure, then the device complexity is reduced, but the adaptability for different child heights is worsened
Solution Approach 1:
The armrest is designed with dynamic adjustability, allowing it to transition between fixed and movable states. The sliding mechanism enables the armrest to move vertically along the support column and lock at different heights, providing adaptability while maintaining structural simplicity through a straightforward guide rail and latch system
Solution Approach 2:
The armrest system is segmented into independent components: the armrest pad, sliding mechanism, support column with restraining parts, and latching component. This segmentation allows each part to perform its specific function efficiently, reducing overall complexity while enabling height adjustment through the coordinated interaction of these modular elements
2Reliability
If the armrest height adjustment mechanism is made secure and reliable, then the reliability is improved, but the ease of operation is worsened
Solution Approach 1:
The latching component is designed to engage and disengage automatically through the sliding motion of the tongue board. When the armrest is moved to a desired height, the stop piece naturally aligns with and engages the restraining parts without requiring additional locking actions, providing reliable positioning while maintaining ease of operation
Solution Approach 2:
The tongue board acts as an intermediary element between the armrest component and the restraining parts. It translates the simple sliding motion of the armrest into the engagement or disengagement of the latching mechanism, allowing caregivers to adjust height easily while ensuring secure locking through the mediator's mechanical advantage
3Reliability
If the latching component is made with multiple restraining parts for secure locking, then the reliability is improved, but the device complexity is worsened
Solution Approach 1:
The single tongue board serves multiple functions: it guides the sliding motion of the armrest, engages with different restraining parts at various heights, and provides the latching action through its interaction with the stop piece. This multi-functionality reduces the need for separate locking mechanisms for each height position, maintaining reliability while reducing complexity
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
Enables easy and secure adjustment of the armrest to desired heights, providing comfort and convenience for children by simplifying the operation of height adjustments.
Implementation Method 1
the armrest assembly further includes a return spring located between the tongue board and the armrest component for biasing the tongue board to move the stop piece toward the restraining parts
Data Source
AI summary
A child booster seat includes a seat base, and an armrest support coupled to the seat base and formed with an installation space that opens upward. The armrest support has a wall confronting the installation space and formed with a plurality of restraining parts located at different heights of the armrest support. The child booster seat further includes an armrest assembly including a latching component having a tongue board that extends into the installation space and that is movable vertically within the installation space and a stop piece that projects from the tongue board for engaging selectively the restraining parts, and an armrest component coupled to the tongue board and vertically co-movable with the tongue board relative to the armrest support.