Child Carrier Triangular Frame Design for Lightweight Mode Switching
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Solution Overview
Problem
Existing child carriers are heavy, inconvenient for carrying, and difficult to rapidly switch between stroller and automobile seat modes.
Innovation Solution
A child carrier design featuring a carrier body with a backrest assembly, rear joint assembly, front leg assembly, connecting rod assembly, and rear leg assembly, allowing for a triangular supporting structure that transitions between an unfolded state for automobile seat use and a folded state for stroller use, with sliding and rotating mechanisms for easy conversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a child carrier is designed to meet outdoor travel requirements by assembling a seat body and frame to form a stroller, then the carrier can be used outdoors, but the carrier becomes heavy and inconvenient for carrying
Solution Approach 1:
The child carrier is divided into separate functional modules: a carrier body for automobile seat use and a detachable frame assembly for stroller mode. This segmentation allows the heavy frame to be separated from the carrier body, reducing the weight that needs to be carried when transitioning between modes while maintaining full outdoor travel capability.
Solution Approach 2:
The frame assembly incorporates dynamic elements including rotatable front and rear leg assemblies, telescopic handle, and collapsible wheel structures. These dynamic features enable the frame to be quickly assembled and disassembled, allowing users to carry only the lightweight carrier body when automobile use is needed, while assembling the full stroller frame for outdoor activities.
2Adaptability or versatility
If a child carrier is designed with assembly and detachment mechanisms for mode switching, then the carrier can switch between stroller and automobile seat modes, but the operation becomes inconvenient and slow
Solution Approach 1:
The frame assembly is designed with pre-configured connection points and alignment features that guide the assembly process. The carrier body includes predetermined mounting interfaces that automatically align with the frame components, allowing users to assemble or detach the stroller mode without complex alignment procedures, significantly improving switching speed and convenience.
Solution Approach 2:
Connection interfaces and coupling mechanisms serve as intermediaries between the carrier body and frame assembly. These standardized interfaces simplify the connection and detachment processes, enabling rapid mode switching without requiring users to manipulate multiple fasteners or complex mechanical components.
3Weight of moving object
If a child carrier uses a lighter structure to reduce weight, then the carrier becomes easier to carry, but the structural strength may be compromised
Solution Approach 1:
The carrier body employs local quality optimization by concentrating structural reinforcement only in critical areas such as the mounting interfaces for automobile seat installation and the connection points for the frame assembly. Non-critical areas use lighter materials and thinner walls, reducing overall weight while maintaining sufficient strength for safety-critical functions through targeted reinforcement.
Solution Approach 2:
The carrier utilizes composite construction combining materials with different properties: high-strength plastics for structural components requiring rigidity, lighter-weight materials for non-structural parts, and strategic use of reinforcement fibers or compounds in key load-bearing areas. This composite approach achieves the required structural strength with minimized overall weight.
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 a lightweight design that maintains structural strength, facilitating easy switching between modes without additional weight, enhancing user convenience and safety.
Implementation Method 1
the rear joint assembly being slidingly connected to the chute assembly to switch the child carrier between a first state and a second state
Implementation Method 2
a front leg assembly, an end of the front leg assembly away from ground being rotatably connected to the seat plate; a rear leg assembly, connected to the rear joint assembly and rotatable relative to the connecting rod assembly
Data Source
Figure 1
Figure 2(a)~2(b)
Figure 3(a)~3(d)
AI summary
Provided is a child carrier, including: a carrier body (1), having a backrest assembly and a seat plate; a rear joint assembly, arranged on the carrier body (1);a front leg assembly (3), an end of the front leg assembly (3) away from ground being rotatably connected to the seat plate; a connecting rod assembly (4), an end of the connecting rod assembly (4) being connected to the front leg assembly (3) and another end of the connecting rod assembly (4) being connected to the rear joint assembly; a rear leg assembly (2), connected to the rear joint assembly and rotatable relative to the connecting rod assembly (4); and a chute assembly, arranged on the backrest assembly, the rear joint assembly being slidingly connected to the chute assembly to switch the child carrier between a first state and a second state; wherein the backrest assembly, the seat plate and the connecting rod assembly (4) form a triangle in the first state of the child carrier; and the seat plate, the front leg assembly (3) and the connecting rod assembly (4) form a triangle in the second state of the child carrier.